Java tutorial
/******************************************************************************* * Copyright (c) 2013, 2014 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.che.jdt.quickfix; import org.eclipse.che.jdt.testplugin.Java18ProjectTestSetup; import org.eclipse.jdt.core.ICompilationUnit; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IPackageFragment; import org.eclipse.jdt.core.IPackageFragmentRoot; import org.eclipse.jdt.core.JavaCore; import org.eclipse.jdt.core.formatter.DefaultCodeFormatterConstants; import org.eclipse.jdt.internal.corext.codemanipulation.StubUtility; import org.eclipse.jdt.internal.corext.fix.FixMessages; import org.eclipse.jdt.internal.corext.template.java.CodeTemplateContextType; import org.eclipse.jdt.internal.ui.JavaPlugin; import org.eclipse.jdt.internal.ui.text.correction.AssistContext; import org.eclipse.jdt.internal.ui.text.correction.CorrectionMessages; import org.eclipse.che.jdt.testplugin.JavaProjectHelper; import org.eclipse.che.jdt.testplugin.TestOptions; import org.eclipse.jdt.ui.PreferenceConstants; import org.eclipse.jface.preference.IPreferenceStore; import org.junit.After; import org.junit.Before; import org.junit.Ignore; import org.junit.Test; import java.util.Hashtable; import java.util.List; public class AssistQuickFixTest18 extends QuickFixTest { private static final Class THIS = AssistQuickFixTest18.class; private IJavaProject fJProject1; private IPackageFragmentRoot fSourceFolder; public AssistQuickFixTest18() { super(new Java18ProjectTestSetup()); } // public static Test suite() { // return setUpTest(new TestSuite(THIS)); // } // // public static Test setUpTest(Test test) { // return new Java18ProjectTestSetup(test); // } @Before public void setUp() throws Exception { super.setUp(); Hashtable options = TestOptions.getDefaultOptions(); options.put(DefaultCodeFormatterConstants.FORMATTER_TAB_CHAR, JavaCore.SPACE); options.put(DefaultCodeFormatterConstants.FORMATTER_TAB_SIZE, "4"); JavaCore.setOptions(options); IPreferenceStore store = JavaPlugin.getDefault().getPreferenceStore(); store.setValue(PreferenceConstants.CODEGEN_ADD_COMMENTS, false); StubUtility.setCodeTemplate(CodeTemplateContextType.METHODSTUB_ID, "//TODO\n${body_statement}", null); fJProject1 = Java18ProjectTestSetup.getProject(); fSourceFolder = JavaProjectHelper.addSourceContainer(fJProject1, "src"); } @After public void tearDown() throws Exception { super.tearDown(); JavaProjectHelper.clear(fJProject1, Java18ProjectTestSetup.getDefaultClasspath()); } @Test public void testAssignParamToField1() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("public interface I {\n"); buf.append(" default void foo(int x) {\n"); buf.append(" System.out.println(x);\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("I.java", buf.toString(), false, null); int offset = buf.toString().indexOf("x"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 0); } @Test public void testAssignParamToField2() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("public interface I {\n"); buf.append(" static void bar(int x) {\n"); buf.append(" System.out.println(x);\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("I.java", buf.toString(), false, null); int offset = buf.toString().indexOf("x"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 0); } @Test public void testConvertToLambda1() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" public void method() {\n"); buf.append(" System.out.println();\n"); buf.append(" System.out.println();\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(() -> {\n"); buf.append(" System.out.println();\n"); buf.append(" System.out.println();\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda2() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method(int a, int b);\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" public void method(int a, int b) {\n"); buf.append(" System.out.println(a+b);\n"); buf.append(" System.out.println(a+b);\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method(int a, int b);\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar((a, b) -> {\n"); buf.append(" System.out.println(a+b);\n"); buf.append(" System.out.println(a+b);\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda3() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append(" boolean equals(Object obj);\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" public void method() {\n"); buf.append(" System.out.println();\n"); buf.append(" }\n"); buf.append(" public boolean equals(Object obj) {\n"); buf.append(" return false;\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertProposalDoesNotExist(proposals, FixMessages.LambdaExpressionsFix_convert_to_lambda_expression); } @Test public void testConvertToLambda4() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" int count=0;\n"); buf.append(" public void method() {\n"); buf.append(" System.out.println();\n"); buf.append(" count++;\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertProposalDoesNotExist(proposals, FixMessages.LambdaExpressionsFix_convert_to_lambda_expression); } @Test public void testConvertToLambda5() throws Exception { //Quick assist should not be offered in 1.7 mode JavaProjectHelper.set17CompilerOptions(fJProject1); IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); try { StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" public void method() {\n"); buf.append(" System.out.println();\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertProposalDoesNotExist(proposals, FixMessages.LambdaExpressionsFix_convert_to_lambda_expression); } finally { JavaProjectHelper.set18CompilerOptions(fJProject1); } } @Test public void testConvertToLambda6() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" boolean equals(Object obj);\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" public boolean equals(Object obj) {\n"); buf.append(" return false;\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertProposalDoesNotExist(proposals, FixMessages.LambdaExpressionsFix_convert_to_lambda_expression); } @Test public void testConvertToLambda7() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("abstract class C {\n"); buf.append(" abstract void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(C c) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new C() {\n"); buf.append(" public void method() {\n"); buf.append(" System.out.println();\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("C()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertProposalDoesNotExist(proposals, FixMessages.LambdaExpressionsFix_convert_to_lambda_expression); } @Test public void testConvertToLambda8() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" public void method() {\n"); buf.append(" System.out.println();\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(() -> System.out.println());\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda9() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" public int method() {\n"); buf.append(" return 1;\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(() -> 1);\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda10() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("interface J {\n"); buf.append(" Integer foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class X {\n"); buf.append(" static void goo(I i) { }\n"); buf.append("\n"); buf.append(" static void goo(J j) { }\n"); buf.append("\n"); buf.append(" public static void main(String[] args) {\n"); buf.append(" goo(new I() {\n"); buf.append(" @Override\n"); buf.append(" public int foo(String s) {\n"); buf.append(" return 0;\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("X.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("interface J {\n"); buf.append(" Integer foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class X {\n"); buf.append(" static void goo(I i) { }\n"); buf.append("\n"); buf.append(" static void goo(J j) { }\n"); buf.append("\n"); buf.append(" public static void main(String[] args) {\n"); buf.append(" goo((I) s -> 0);\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda11() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("interface J {\n"); buf.append(" Integer foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class X extends Y {\n"); buf.append(" static void goo(I i) { }\n"); buf.append(" public static void main(String[] args) {\n"); buf.append(" goo(new I() {\n"); buf.append(" @Override\n"); buf.append(" public int foo(String s) {\n"); buf.append(" return 0;\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); buf.append("\n"); buf.append("class Y {\n"); buf.append(" private static void goo(J j) { } \n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("X.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("interface J {\n"); buf.append(" Integer foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class X extends Y {\n"); buf.append(" static void goo(I i) { }\n"); buf.append(" public static void main(String[] args) {\n"); buf.append(" goo(s -> 0);\n"); buf.append(" }\n"); buf.append("}\n"); buf.append("\n"); buf.append("class Y {\n"); buf.append(" private static void goo(J j) { } \n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda12() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("interface J {\n"); buf.append(" Integer foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class X extends Y {\n"); buf.append(" static void goo(I i) { }\n"); buf.append(" public static void main(String[] args) {\n"); buf.append(" goo(new I() {\n"); buf.append(" @Override\n"); buf.append(" public int foo(String s) {\n"); buf.append(" return 0;\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); buf.append("\n"); buf.append("class Y {\n"); buf.append(" static void goo(J j) { } \n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("X.java", buf.toString(), false, null); int offset = buf.toString().indexOf("I()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("interface J {\n"); buf.append(" Integer foo(String s);\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class X extends Y {\n"); buf.append(" static void goo(I i) { }\n"); buf.append(" public static void main(String[] args) {\n"); buf.append(" goo((I) s -> 0);\n"); buf.append(" }\n"); buf.append("}\n"); buf.append("\n"); buf.append("class Y {\n"); buf.append(" static void goo(J j) { } \n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda13() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface J {\n"); buf.append(" <M> J run(M x);\n"); buf.append("}\n"); buf.append("\n"); buf.append("class Test {\n"); buf.append(" J j = new J() {\n"); buf.append(" @Override\n"); buf.append(" public <M> J run(M x) {\n"); buf.append(" return null;\n"); buf.append(" }\n"); buf.append(" }; \n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("Test.java", buf.toString(), false, null); int offset = buf.toString().indexOf("J()"); // generic lambda not allowed AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertCorrectLabels(proposals); assertProposalDoesNotExist(proposals, FixMessages.LambdaExpressionsFix_convert_to_lambda_expression); } @Test public void testConvertToLambda14() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI {\n"); buf.append(" int foo(int x, int y, int z);\n"); buf.append("}\n"); buf.append("\n"); buf.append("class C {\n"); buf.append(" int i;\n"); buf.append(" private void test(int x) {\n"); buf.append(" int y;\n"); buf.append(" FI fi = new FI() {\n"); buf.append(" @Override\n"); buf.append(" public int foo(int x/*km*/, int i /*inches*/, int y/*yards*/) {\n"); buf.append(" return x + i + y;\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("C.java", buf.toString(), false, null); int offset = buf.toString().indexOf("FI()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI {\n"); buf.append(" int foo(int x, int y, int z);\n"); buf.append("}\n"); buf.append("\n"); buf.append("class C {\n"); buf.append(" int i;\n"); buf.append(" private void test(int x) {\n"); buf.append(" int y;\n"); buf.append(" FI fi = (x1/*km*/, i /*inches*/, y1/*yards*/) -> x1 + i + y1;\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda15() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI {\n"); buf.append(" int foo(int x, int y, int z);\n"); buf.append("}\n"); buf.append("\n"); buf.append("class C {\n"); buf.append(" int i;\n"); buf.append(" private void test(int x, int y, int z) {\n"); buf.append(" FI fi = new FI() {\n"); buf.append(" @Override\n"); buf.append(" public int foo(int a, int b, int z) {\n"); buf.append(" int x= 0, y=0; \n"); buf.append(" return x + y + z;\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("C.java", buf.toString(), false, null); int offset = buf.toString().indexOf("FI()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI {\n"); buf.append(" int foo(int x, int y, int z);\n"); buf.append("}\n"); buf.append("\n"); buf.append("class C {\n"); buf.append(" int i;\n"); buf.append(" private void test(int x, int y, int z) {\n"); buf.append(" FI fi = (a, b, z1) -> {\n"); buf.append(" int x1= 0, y1=0; \n"); buf.append(" return x1 + y1 + z1;\n"); buf.append(" };\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda16() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface FI {\n"); buf.append(" void foo();\n"); buf.append("}\n"); buf.append("\n"); buf.append("class C1 {\n"); buf.append(" void fun1() {\n"); buf.append(" int c = 0; // [1]\n"); buf.append(" FI test = new FI() {\n"); buf.append(" @Override\n"); buf.append(" public void foo() {\n"); buf.append(" for (int c = 0; c < 10;) { /* [2] */ }\n"); buf.append(" for (int c = 0; c < 20;) { /* [3] */ }\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("C1.java", buf.toString(), false, null); int offset = buf.toString().indexOf("FI()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface FI {\n"); buf.append(" void foo();\n"); buf.append("}\n"); buf.append("\n"); buf.append("class C1 {\n"); buf.append(" void fun1() {\n"); buf.append(" int c = 0; // [1]\n"); buf.append(" FI test = () -> {\n"); buf.append(" for (int c1 = 0; c1 < 10;) { /* [2] */ }\n"); buf.append(" for (int c2 = 0; c2 < 20;) { /* [3] */ }\n"); buf.append(" };\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda17() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface X {\n"); buf.append(" void foo();\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class CX {\n"); buf.append(" private void fun(int a) {\n"); buf.append(" X x= new X() {\n"); buf.append(" @Override\n"); buf.append(" public void foo() {\n"); buf.append(" int a; \n"); buf.append(" int a1;\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("CX.java", buf.toString(), false, null); int offset = buf.toString().indexOf("X()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface X {\n"); buf.append(" void foo();\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class CX {\n"); buf.append(" private void fun(int a) {\n"); buf.append(" X x= () -> {\n"); buf.append(" int a2; \n"); buf.append(" int a1;\n"); buf.append(" };\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambda18() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface FIOther {\n"); buf.append(" void run(int x);\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class TestOther {\n"); buf.append(" void init() {\n"); buf.append(" String x;\n"); buf.append(" m(x1 -> {\n"); buf.append(" FIOther fi = new FIOther() {\n"); buf.append(" @Override\n"); buf.append(" public void run(int x1) { \n"); buf.append(" return;\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("\n"); buf.append(" void m(FIOther fi) {\n"); buf.append(" };\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("TestOther.java", buf.toString(), false, null); int offset = buf.toString().indexOf("FIOther()"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface FIOther {\n"); buf.append(" void run(int x);\n"); buf.append("}\n"); buf.append("\n"); buf.append("public class TestOther {\n"); buf.append(" void init() {\n"); buf.append(" String x;\n"); buf.append(" m(x1 -> {\n"); buf.append(" FIOther fi = x11 -> { \n"); buf.append(" return;\n"); buf.append(" };\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("\n"); buf.append(" void m(FIOther fi) {\n"); buf.append(" };\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToLambdaAmbiguousOverridden() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("import java.util.ArrayList;\n"); buf.append("import java.util.function.Predicate;\n"); buf.append("\n"); buf.append("public class Test {\n"); buf.append(" void foo(ArrayList<String> list) {\n"); buf.append(" list.removeIf(new Predicate<String>() {\n"); buf.append(" @Override\n"); buf.append(" public boolean test(String t) {\n"); buf.append(" return t.isEmpty();\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("Test.java", buf.toString(), false, null); int offset = buf.toString().indexOf("public boolean test("); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("import java.util.ArrayList;\n"); buf.append("\n"); buf.append("public class Test {\n"); buf.append(" void foo(ArrayList<String> list) {\n"); buf.append(" list.removeIf(t -> t.isEmpty());\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToAnonymousClassCreation1() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(() -> {\n"); buf.append(" System.out.println();\n"); buf.append(" System.out.println();\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 4); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" @Override\n"); buf.append(" public void method() {\n"); buf.append(" System.out.println();\n"); buf.append(" System.out.println();\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToAnonymousClassCreation2() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method(int a, int b);\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar((int a, int b) -> {\n"); buf.append(" System.out.println(a+b);\n"); buf.append(" System.out.println(a+b);\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 3); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method(int a, int b);\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" @Override\n"); buf.append(" public void method(int a, int b) {\n"); buf.append(" System.out.println(a+b);\n"); buf.append(" System.out.println(a+b);\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToAnonymousClassCreation3() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(() -> System.out.println());\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 5); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" void method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" @Override\n"); buf.append(" public void method() {\n"); buf.append(" System.out.println();\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToAnonymousClassCreation4() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(() -> 1);\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 5); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I {\n"); buf.append(" int method();\n"); buf.append("}\n"); buf.append("public class E {\n"); buf.append(" void bar(I i) {\n"); buf.append(" }\n"); buf.append(" void foo() {\n"); buf.append(" bar(new I() {\n"); buf.append(" @Override\n"); buf.append(" public int method() {\n"); buf.append(" return 1;\n"); buf.append(" }\n"); buf.append(" });\n"); buf.append(" }\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToAnonymousClassCreation5() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface FX {\n"); buf.append(" default int defaultMethod(String x) {\n"); buf.append(" return -1;\n"); buf.append(" }\n"); buf.append("\n"); buf.append(" int foo(int x);\n"); buf.append("}\n"); buf.append("\n"); buf.append("class TestX {\n"); buf.append(" FX fxx = x -> {\n"); buf.append(" return (new FX() {\n"); buf.append(" @Override\n"); buf.append(" public int foo(int x) {\n"); buf.append(" return 0;\n"); buf.append(" }\n"); buf.append(" }).defaultMethod(\"a\");\n"); buf.append(" };\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("TestX.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface FX {\n"); buf.append(" default int defaultMethod(String x) {\n"); buf.append(" return -1;\n"); buf.append(" }\n"); buf.append("\n"); buf.append(" int foo(int x);\n"); buf.append("}\n"); buf.append("\n"); buf.append("class TestX {\n"); buf.append(" FX fxx = new FX() {\n"); buf.append(" @Override\n"); buf.append(" public int foo(int x) {\n"); buf.append(" return (new FX() {\n"); buf.append(" @Override\n"); buf.append(" public int foo(int x) {\n"); buf.append(" return 0;\n"); buf.append(" }\n"); buf.append(" }).defaultMethod(\"a\");\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToAnonymousClassCreation6() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("import java.util.function.UnaryOperator;\n"); buf.append("\n"); buf.append("public class Snippet {\n"); buf.append(" UnaryOperator<String> fi3 = x -> {\n"); buf.append(" return x.toString();\n"); buf.append(" };\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("Snippet.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("import java.util.function.UnaryOperator;\n"); buf.append("\n"); buf.append("public class Snippet {\n"); buf.append(" UnaryOperator<String> fi3 = new UnaryOperator<String>() {\n"); buf.append(" @Override\n"); buf.append(" public String apply(String x) {\n"); buf.append(" return x.toString();\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test @Ignore // Bug 427694: [1.8][compiler] Functional interface not identified correctly public void _testConvertToAnonymousClassCreation7() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I { Object m(Class c); }\n"); buf.append("interface J<S> { S m(Class<?> c); }\n"); buf.append("interface K<T> { T m(Class<?> c); }\n"); buf.append("interface Functional<S,T> extends I, J<S>, K<T> {}\n"); buf.append("\n"); buf.append("class C {\n"); buf.append(" Functional<?, ?> fun= (c) -> { return null;};\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("C.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("interface I { Object m(Class c); }\n"); buf.append("interface J<S> { S m(Class<?> c); }\n"); buf.append("interface K<T> { T m(Class<?> c); }\n"); buf.append("interface Functional<S,T> extends I, J<S>, K<T> {}\n"); buf.append("\n"); buf.append("class C {\n"); buf.append(" Functional<?, ?> fun= new Functional<Object, Object>() {\n"); buf.append(" @Override\n"); buf.append(" public Object m(Class c) {\n"); buf.append(" return null;\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testConvertToAnonymousClassCreationWithParameterName() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("import java.util.function.IntFunction;\n"); buf.append("public class E {\n"); buf.append(" IntFunction<String> toString= (int i) -> Integer.toString(i);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("import java.util.function.IntFunction;\n"); buf.append("public class E {\n"); buf.append(" IntFunction<String> toString= new IntFunction<String>() {\n"); buf.append(" @Override\n"); buf.append(" public String apply(int i) {\n"); buf.append(" return Integer.toString(i);\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToBlock1() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI1 fi1a= x -> -1;\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI1 {\n"); buf.append(" int foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI1 fi1a= x -> {\n"); buf.append(" return -1;\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI1 {\n"); buf.append(" int foo(int x);\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToBlock2() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI1 fi1b= x -> m1();\n"); buf.append(" int m1(){ return 0; }\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI1 {\n"); buf.append(" int foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI1 fi1b= x -> {\n"); buf.append(" return m1();\n"); buf.append(" };\n"); buf.append(" int m1(){ return 0; }\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI1 {\n"); buf.append(" int foo(int x);\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToBlock3() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2b= x -> m1();\n"); buf.append(" int m1() { return 0; }\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2b= x -> {\n"); buf.append(" m1();\n"); buf.append(" };\n"); buf.append(" int m1() { return 0; }\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToBlock4() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2a= x -> System.out.println();\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2a= x -> {\n"); buf.append(" System.out.println();\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToExpression1() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI1 fi1= x -> {\n"); buf.append(" return x=0;\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI1 {\n"); buf.append(" int foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI1 fi1= x -> x=0;\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI1 {\n"); buf.append(" int foo(int x);\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToExpression2() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2= x -> {\n"); buf.append(" new Runnable() {\n"); buf.append(" public void run() {\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2= x -> new Runnable() {\n"); buf.append(" public void run() {\n"); buf.append(" }\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToExpression3() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2= x -> { m1(); };\n"); buf.append(" int m1(){ return 0; }\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2= x -> m1();\n"); buf.append(" int m1(){ return 0; }\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToExpression4() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2= x -> {\n"); buf.append(" super.toString();\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2= x -> super.toString();\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToExpression5() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2= x -> {\n"); buf.append(" --x;\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2= x -> --x;\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); assertNumberOfProposals(proposals, 2); assertCorrectLabels(proposals); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } @Test public void testChangeLambdaBodyToExpression6() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2z= x -> { };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertCorrectLabels(proposals); assertProposalDoesNotExist(proposals, CorrectionMessages.QuickAssistProcessor_change_lambda_body_to_expression); } @Test public void testChangeLambdaBodyToExpression7() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2c = x -> {\n"); buf.append(" return;\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertCorrectLabels(proposals); assertProposalDoesNotExist(proposals, CorrectionMessages.QuickAssistProcessor_change_lambda_body_to_expression); } @Test public void testChangeLambdaBodyToExpression8() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("class E {\n"); buf.append(" FI2 fi2c = x -> {\n"); buf.append(" int n= 0;\n"); buf.append(" };\n"); buf.append("}\n"); buf.append("\n"); buf.append("@FunctionalInterface\n"); buf.append("interface FI2 {\n"); buf.append(" void foo(int x);\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("->"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); assertNumberOfProposals(proposals, 1); assertCorrectLabels(proposals); assertProposalDoesNotExist(proposals, CorrectionMessages.QuickAssistProcessor_change_lambda_body_to_expression); } @Test public void testBug433754() throws Exception { IPackageFragment pack1 = fSourceFolder.createPackageFragment("test1", false, null); StringBuffer buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("\n"); buf.append("class E {\n"); buf.append(" private void foo() {\n"); buf.append(" for (String str : new String[1]) {\n"); buf.append(" }\n"); buf.append(" }\n"); buf.append("}\n"); ICompilationUnit cu = pack1.createCompilationUnit("E.java", buf.toString(), false, null); int offset = buf.toString().indexOf("str"); AssistContext context = getCorrectionContext(cu, offset, 0); assertNoErrors(context); List proposals = collectAssists(context, false); buf = new StringBuffer(); buf.append("package test1;\n"); buf.append("\n"); buf.append("class E {\n"); buf.append(" private void foo() {\n"); buf.append(" String[] strings = new String[1];\n"); buf.append(" for (int i = 0; i < strings.length; i++) {\n"); buf.append(" String str = strings[i];\n"); buf.append(" }\n"); buf.append(" }\n"); buf.append("}\n"); assertNumberOfProposals(proposals, 1); assertCorrectLabels(proposals); String expected1 = buf.toString(); assertExpectedExistInProposals(proposals, new String[] { expected1 }); } }