Java tutorial
/** * Copyright 2011 meltmedia * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.xchain.test.component; import static org.junit.Assert.assertEquals; import org.apache.commons.jxpath.JXPathContext; import org.junit.After; import org.junit.AfterClass; import org.junit.Before; import org.junit.BeforeClass; import org.junit.Test; import org.xchain.Catalog; import org.xchain.Command; import org.xchain.framework.factory.CatalogFactory; import org.xchain.framework.lifecycle.ExecutionException; import org.xchain.framework.lifecycle.Lifecycle; /** * @author Devon Tackett */ public class TestComponent { public static String CATALOG_URI = "resource://context-class-loader/org/xchain/test/component/component.xchain"; public static String BASIC_COMPONENT_COMMAND = "basic-component-test"; public static String BASIC_COMPONENT_PARAM_COMMAND = "basic-component-param-test"; public static String JAVA_OBJECT_COMPONENT_PARAM_COMMAND = "java-object-component-param-test"; public static String BEGIN_COMPONENT_COMMAND = "begin-component-test"; public static String END_COMPONENT_COMMAND = "end-component-test"; public static String COUNT_COMPONENT_COMMAND = "count-component-test"; public static String FIELD_COMPONENT_COMMAND = "field-component-test"; public static String SIMPLE_METHOD_COMPONENT_COMMAND = "simple-method-component-test"; public static String NAMESPACE_FIELD_COMPONENT_COMMAND = "namespace-field-component-test"; public static String CHILD_FIELD_COMPONENT_COMMAND = "child-field-component-test"; public static String CHILD_METHOD_COMPONENT_COMMAND = "child-method-component-test"; public static String CHAIN_SCOPE_COMPONENT_COMMAND = "chain-scope-component-test"; public static String EXECUTION_SCOPE_COMPONENT_COMMAND = "execution-scope-component-test"; public static String REQUEST_SCOPE_COMPONENT_COMMAND = "request-scope-component-test"; public static String CHAIN_SCOPE_COMPONENT_EXCEPTION_COMMAND = "chain-scope-exception-component-test"; public static String EXECUTION_SCOPE_COMPONENT_EXCEPTION_COMMAND = "execution-scope-exception-component-test"; public static String FAILED_INJECTION_EXCEPTION_COMPONENT_COMMAND = "failed-injection-exception-component-test"; public static String ALLOWED_INJECTION_EXCEPTION_COMPONENT_COMMAND = "allowed-injection-exception-component-test"; protected JXPathContext context = null; protected Catalog catalog = null; protected Command command = null; public class TestParamClass { private String value = "initial"; public String getValue() { return value; } public void setValue(String value) { this.value = value; } } @BeforeClass public static void setUpLifecycle() throws Exception { Lifecycle.startLifecycle(); } @AfterClass public static void tearDownLifecycle() throws Exception { Lifecycle.stopLifecycle(); } @Before public void setUp() throws Exception { catalog = CatalogFactory.getInstance().getCatalog(CATALOG_URI); context = JXPathContext.newContext(new Object()); } @After public void tearDown() throws Exception { context = null; } @Test public void testBasicComponent() throws Exception { // Get the command. Command command = catalog.getCommand(BASIC_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String value = (String) context.getValue("$result", String.class); assertEquals("The result of the basic component was not correct.", BasicComponent.BASIC_RESULT, value); } @Test public void testBasicParamComponent() throws Exception { // Get the command. Command command = catalog.getCommand(BASIC_COMPONENT_PARAM_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String value = (String) context.getValue("$result", String.class); assertEquals("The result of the basic param component was not correct.", "initial" + BasicComponent.PARAM_RESULT, value); } @Test public void testJavaObjectParamComponent() throws Exception { // Create the java object TestParamClass paramObject = new TestParamClass(); // Put the object in the context. context.getVariables().declareVariable("object-param", paramObject); // Get the command. Command command = catalog.getCommand(JAVA_OBJECT_COMPONENT_PARAM_COMMAND); // execute the command. command.execute(context); // get the value for the variable. paramObject = (TestParamClass) context.getValue("$result", TestParamClass.class); assertEquals("The result of the java object param component was not correct.", BasicComponent.OBJECT_PARAM_TEST_RESULT, paramObject.getValue()); } @Test public void testBeginComponent() throws Exception { // Get the command. Command command = catalog.getCommand(BEGIN_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String value = (String) context.getValue("$result", String.class); assertEquals("The result of the begin component was not correct.", BeginComponent.BEGIN_RESULT, value); } @Test public void testCountComponent() throws Exception { // Get the command. Command command = catalog.getCommand(COUNT_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. Integer value = (Integer) context.getValue("$result", Integer.class); assertEquals("The result of the count component was not correct.", CountComponent.START_COUNT + 5, value.intValue()); } @Test public void testEndComponent() throws Exception { // Create the java object TestParamClass paramObject = new TestParamClass(); // Put the object in the context. context.getVariables().declareVariable("object-param", paramObject); // Get the command. Command command = catalog.getCommand(END_COMPONENT_COMMAND); // execute the command. command.execute(context); assertEquals("The result of the end component was not correct.", EndComponent.END_RESULT, paramObject.getValue()); } @Test public void testFieldComponent() throws Exception { // Put the field in the context. context.getVariables().declareVariable("private-field", FieldComponent.FINAL_PRIVATE_VALUE); context.getVariables().declareVariable("protected-field", FieldComponent.FINAL_PROTECTED_VALUE); context.getVariables().declareVariable("public-field", FieldComponent.FINAL_PUBLIC_VALUE); // Get the command. Command command = catalog.getCommand(FIELD_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String privateResult = (String) context.getValue("$private-result", String.class); String protectedResult = (String) context.getValue("$protected-result", String.class); String publicResult = (String) context.getValue("$public-result", String.class); assertEquals("The result of the private field component was not correct.", FieldComponent.FINAL_PRIVATE_VALUE, privateResult); assertEquals("The result of the protected field component was not correct.", FieldComponent.FINAL_PROTECTED_VALUE, protectedResult); assertEquals("The result of the public field component was not correct.", FieldComponent.FINAL_PUBLIC_VALUE, publicResult); } @Test public void testSimpleMethodComponent() throws Exception { // Put the field in the context. context.getVariables().declareVariable("method", SimpleMethodComponent.FINAL_VALUE); // Get the command. Command command = catalog.getCommand(SIMPLE_METHOD_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String value = (String) context.getValue("$result", String.class); assertEquals("The result of the simple method component was not correct.", SimpleMethodComponent.FINAL_VALUE, value); } @Test public void testNamespaceFieldComponent() throws Exception { // Put the field in the context. context.getVariables().declareVariable("{" + NamespaceFieldComponent.TEST_NAMESPACE_URI + "}field", NamespaceFieldComponent.FINAL_VALUE); // Get the command. Command command = catalog.getCommand(NAMESPACE_FIELD_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String value = (String) context.getValue("$result", String.class); assertEquals("The result of the namespace field component was not correct.", NamespaceFieldComponent.FINAL_VALUE, value); } @Test public void testChildFieldComponent() throws Exception { // Put the field in the context. context.getVariables().declareVariable("public-field", ParentFieldComponent.FINAL_PUBLIC_VALUE); context.getVariables().declareVariable("protected-field", ParentFieldComponent.FINAL_PROTECTED_VALUE); // Get the command. Command command = catalog.getCommand(CHILD_FIELD_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String publicValue = (String) context.getValue("$public-result", String.class); String protectedValue = (String) context.getValue("$protected-result", String.class); assertEquals("The result of the public field in the child component was not correct.", ParentFieldComponent.FINAL_PUBLIC_VALUE, publicValue); assertEquals("The result of the protected field in the child component was not correct.", ParentFieldComponent.FINAL_PROTECTED_VALUE, protectedValue); } @Test public void testChildMethodComponent() throws Exception { // Put the field in the context. context.getVariables().declareVariable("value", ParentMethodComponent.FINAL_RESULT); // Get the command. Command command = catalog.getCommand(CHILD_METHOD_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String result = (String) context.getValue("$result", String.class); assertEquals("The result of the child method component was not correct.", ParentMethodComponent.FINAL_RESULT, result); } @Test public void testChainScopeComponent() throws Exception { // Get the command. Command command = catalog.getCommand(CHAIN_SCOPE_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String firstResult = (String) context.getValue("$first-chain-result", String.class); String secondResult = (String) context.getValue("$second-chain-result", String.class); assertEquals("The result of the first chain scoped component was not correct.", "first", firstResult); assertEquals("The result of the second chain scoped component was not correct.", "second", secondResult); } @Test public void testExecutionScopeComponent() throws Exception { // Put the field in the context. context.getVariables().declareVariable("value", ExecutionScopeComponent.FINAL_RESULT); // Get the command. Command command = catalog.getCommand(EXECUTION_SCOPE_COMPONENT_COMMAND); // execute the command. command.execute(context); // get the value for the variable. String result = (String) context.getValue("$result", String.class); assertEquals("The result of the execution scoped component was not correct.", ExecutionScopeComponent.FINAL_RESULT, result); } @Test public void testRequestScopeComponent() throws Exception { // Get the command. Command command = catalog.getCommand(REQUEST_SCOPE_COMPONENT_COMMAND); // execute the command. command.execute(context); context.registerNamespace("basic", "http://www.xchain.org/test/component"); // get the value for the variable. RequestScopeComponent requestComponent = (RequestScopeComponent) context .getValue("$basic:request-scope-component", RequestScopeComponent.class); assertEquals("The result of the request scoped component was not correct.", "final-value", requestComponent.getResult()); } @Test public void testChainScopeException() throws Exception { // Put the field in the context. context.getVariables().declareVariable("value", "dummy"); // Create the java object TestParamClass paramObject = new TestParamClass(); // Put the object in the context. context.getVariables().declareVariable("test-param", paramObject); // Get the command. Command command = catalog.getCommand(CHAIN_SCOPE_COMPONENT_EXCEPTION_COMMAND); try { // execute the command. command.execute(context); } catch (Exception ignore) { // Ignore the outcoming exception as it was intentional } assertEquals("The chain scoped component was not properly ended.", "clean", paramObject.getValue()); } @Test public void testExecutionScopeException() throws Exception { // Put the field in the context. context.getVariables().declareVariable("value", "dummy"); // Create the java object TestParamClass paramObject = new TestParamClass(); // Put the object in the context. context.getVariables().declareVariable("test-param", paramObject); // Get the command. Command command = catalog.getCommand(EXECUTION_SCOPE_COMPONENT_EXCEPTION_COMMAND); try { // execute the command. command.execute(context); } catch (Exception ignore) { // Ignore the outcoming exception as it was intentional } assertEquals("The execution scoped component was not properly ended.", "clean", paramObject.getValue()); } @Test(expected = ExecutionException.class) public void testFailedInjection() throws Exception { // Get the command. Command command = catalog.getCommand(FAILED_INJECTION_EXCEPTION_COMPONENT_COMMAND); // execute the command. command.execute(context); } @Test public void testAllowedFailedInjection() throws Exception { // Get the command. Command command = catalog.getCommand(ALLOWED_INJECTION_EXCEPTION_COMPONENT_COMMAND); // execute the command. command.execute(context); } }