com.stratio.mojo.scala.crossbuild.RewritePomTest.java Source code

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Here is the source code for com.stratio.mojo.scala.crossbuild.RewritePomTest.java

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/**
 * Copyright (C) 2015 Stratio (http://stratio.com)
 *
 * 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 com.stratio.mojo.scala.crossbuild;

import static org.fest.assertions.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.file.Files;
import java.util.ArrayList;
import java.util.List;

import javax.xml.stream.XMLStreamException;

import org.apache.commons.io.IOUtils;
import org.apache.maven.project.MavenProject;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.junit.rules.TemporaryFolder;

public class RewritePomTest {

    @Rule
    public TemporaryFolder tempDir = new TemporaryFolder();

    @Rule
    public ExpectedException thrown = ExpectedException.none();

    private static MavenProject getMockMavenProject(final File file) {
        final MavenProject project = mock(MavenProject.class);
        when(project.getFile()).thenReturn(file);
        return project;
    }

    @Test
    public void rewriteNonExistentFile() throws IOException, XMLStreamException {
        final RewritePom rewritePom = new RewritePom();
        final String path = "pom_does_not_exist.xml";
        final MavenProject project = getMockMavenProject(new File(path));
        final String newBinaryVersion = "2.11";
        final String newVersion = "2.11.7";
        thrown.expect(FileNotFoundException.class);
        thrown.expectMessage("File does not exist: " + path);
        rewritePom.rewrite(project, "scala.binary.version", "scala.version", newBinaryVersion, newVersion);
    }

    @Test
    public void rewriteEmptyFile() throws IOException, XMLStreamException {
        final RewritePom rewritePom = new RewritePom();
        tempDir.create();
        final File file = tempDir.newFile();
        file.delete();
        assertThat(file.createNewFile()).isTrue();
        final MavenProject project = getMockMavenProject(file);
        final String newBinaryVersion = "2.11";
        final String newVersion = "2.11.7";
        rewritePom.rewrite(project, "scala.binary.version", "scala.version", newBinaryVersion, newVersion);
        assertThat(IOUtils.toString(new FileInputStream(file))).isEmpty();
    }

    @Test
    public void rewriteBaseArtifactId() throws IOException, XMLStreamException {
        final RewritePom rewritePom = new RewritePom();
        tempDir.create();
        final File file = tempDir.newFile();
        file.delete();
        Files.copy(getClass().getResourceAsStream("/basic_pom.xml"), file.toPath());
        final MavenProject project = getMockMavenProject(file);
        final String newBinaryVersion = "2.11";
        final String newVersion = "2.11.7";
        rewritePom.rewrite(project, "scala.binary.version", "scala.version", newBinaryVersion, newVersion);
        assertEqualToResource(file, "/basic_pom_result.xml");
        file.delete();
    }

    /**
     * Regression test for https://github.com/Stratio/scala-cross-build-maven-plugin/issues/23
     * @throws IOException
     * @throws XMLStreamException
     */
    @Test
    public void rewriteWithoutStackOverflow_Issue32() throws IOException, XMLStreamException {
        final RewritePom rewritePom = new RewritePom();
        tempDir.create();
        final File file = tempDir.newFile();
        file.delete();
        Files.copy(getClass().getResourceAsStream("/issue_23_pom.xml"), file.toPath());
        final MavenProject project = getMockMavenProject(file);
        final String newBinaryVersion = "2.10";
        final String newVersion = "2.10.4";
        rewritePom.rewrite(project, "scala.binary.version", "scala.version", newBinaryVersion, newVersion);
        assertEqualToResource(file, "/issue_23_pom_result.xml");
        file.delete();
    }

    private void assertEqualToResource(final File actual, final String expected) throws IOException {
        final List<String> actualLines = IOUtils.readLines(new FileInputStream(actual));
        final List<String> expectedLines = new ArrayList<>(actualLines.size());
        try (final BufferedReader reader = new BufferedReader(
                new InputStreamReader(getClass().getResourceAsStream(expected)))) {
            String line;
            while ((line = reader.readLine()) != null) {
                expectedLines.add(line);
            }
        }
        assertThat(actualLines).isEqualTo(expectedLines);
    }

}