org.androidannotations.testutils.ProcessorTestHelper Maven / Gradle / Ivy
/**
* Copyright (C) 2010-2016 eBusiness Information, Excilys Group
*
* 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.androidannotations.testutils;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.lang.reflect.AnnotatedElement;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.regex.Pattern;
import javax.annotation.processing.Processor;
import javax.tools.Diagnostic;
import javax.tools.Diagnostic.Kind;
import javax.tools.DiagnosticCollector;
import javax.tools.JavaCompiler;
import javax.tools.JavaCompiler.CompilationTask;
import javax.tools.JavaFileObject;
import javax.tools.StandardJavaFileManager;
import javax.tools.ToolProvider;
/**
* Based on http://code.google.com/p/acris/wiki/AnnotationProcessing_Testing
*/
public class ProcessorTestHelper {
public static class CompileResult {
private final List> diagnostics;
public CompileResult(List> diagnostics) {
this.diagnostics = diagnostics;
}
}
private static final String TEST_SOURCE_FOLDER = "src/test/java";
private static final String MAIN_SOURCE_FOLDER = "src/main/java";
protected static final String SOURCE_FILE_SUFFIX = ".java";
protected static final String OUTPUT_DIRECTORY = "target/generated-test";
public static void assertGeneratedClassMatches(File output, String value) {
String[] outputContent = getContents(output);
for (String line : outputContent) {
if (line.matches(value)) {
return;
}
}
fail("Expected value \"" + value + "\" couldn't be found in file " + output.getAbsolutePath());
}
public static void assertGeneratedClassDoesntMatches(File output, String value) {
String[] outputContent = getContents(output);
for (String line : outputContent) {
if (line.matches(value)) {
fail("Value \"" + value + "\" shouldn't be in file " + output.getAbsolutePath());
}
}
}
public static void assertGeneratedClassContains(File output, String[] codeFragment) {
assertTrue("Code fragment \"" + join(codeFragment) + "\" should be in file " + output.getAbsolutePath(),
Collections.indexOfSubList(Arrays.asList(getContents(output)), Arrays.asList(codeFragment)) != -1);
}
public static void assertGeneratedClassDoesNotContain(File output, String[] codeFragment) {
assertTrue("Code fragment \"" + join(codeFragment) + "\" should not be in file " + output.getAbsolutePath(),
Collections.indexOfSubList(Arrays.asList(getContents(output)), Arrays.asList(codeFragment)) == -1);
}
public static void assertOutput(File expectedResult, File output) {
String[] expectedContent = getContents(expectedResult);
String[] outputContent = getContents(output);
assertEquals(expectedContent.length, outputContent.length);
for (int i = 0; i < expectedContent.length; i++) {
assertEquals(expectedContent[i].trim(), outputContent[i].trim());
}
}
public static void assertClassSourcesGeneratedToOutput(Class clazz) {
String canonicalName = clazz.getCanonicalName();
String filePath = canonicalName.replace(".", "/").concat(".java");
File generatedSourcesDir = new File(OUTPUT_DIRECTORY);
File generatedSourceFile = new File(generatedSourcesDir, filePath);
File sourcesDir = new File(MAIN_SOURCE_FOLDER);
File expectedResult = new File(sourcesDir, filePath);
assertOutput(expectedResult, generatedSourceFile);
}
public static void assertClassSourcesNotGeneratedToOutput(Class clazz) {
String canonicalName = clazz.getCanonicalName();
String filePath = canonicalName.replace(".", "/").concat(".java");
File generatedSourcesDir = new File(OUTPUT_DIRECTORY);
File output = new File(generatedSourcesDir, filePath);
assertFalse(output.exists());
}
public static void assertCompilationSuccessful(CompileResult result) {
for (Diagnostic diagnostic : result.diagnostics) {
assertFalse("Expected no errors, found " + diagnostic, diagnostic.getKind().equals(Kind.ERROR));
}
}
public static void assertCompilationError(CompileResult result) {
for (Diagnostic diagnostic : result.diagnostics) {
if (diagnostic.getKind() == Kind.ERROR) {
return;
}
}
fail("Expected a compilation error, diagnostics: " + result.diagnostics);
}
public static void assertCompilationErrorWithNoSource(CompileResult result) {
for (Diagnostic diagnostic : result.diagnostics) {
if (diagnostic.getKind() == Kind.ERROR && diagnostic.getSource() == null) {
return;
}
}
fail("Expected a compilation error with no source, diagnostics: " + result.diagnostics);
}
public static void assertCompilationErrorCount(int expectedErrorCount, CompileResult result) {
int errorCount = 0;
for (Diagnostic diagnostic : result.diagnostics) {
if (diagnostic.getKind() == Kind.ERROR) {
errorCount++;
}
}
if (errorCount != expectedErrorCount) {
fail("Expected " + expectedErrorCount + " compilation error, found " + errorCount + " diagnostics: " + result.diagnostics);
}
}
public static void assertCompilationErrorOn(File expectedErrorClassFile, String expectedContentInError, CompileResult result) throws IOException {
assertCompilationDiagnostingOn(Kind.ERROR, expectedErrorClassFile, expectedContentInError, result);
}
public static void assertCompilationErrorOn(String expectedClassName, String expectedContentInError, CompileResult result) throws IOException {
assertCompilationDiagnostingOn(Kind.ERROR, new File(expectedClassName + ".java"), expectedContentInError, result);
}
public static void assertCompilationWarningOn(File expectedErrorClassFile, String expectedContentInError, CompileResult result) throws IOException {
assertCompilationDiagnostingOn(Kind.WARNING, expectedErrorClassFile, expectedContentInError, result);
}
private static void assertCompilationDiagnostingOn(Kind expectedDiagnosticKind, File expectedErrorClassFile, String expectedContentInError, CompileResult result) throws IOException {
String expectedErrorPath;
boolean fileNameOnly = expectedErrorClassFile.getPath().split(Pattern.quote(File.separator)).length == 1;
if (fileNameOnly) {
// this is just the filename
expectedErrorPath = expectedErrorClassFile.getPath();
} else {
expectedErrorPath = expectedErrorClassFile.toURI().toString();
}
for (Diagnostic diagnostic : result.diagnostics) {
if (diagnostic.getKind() == expectedDiagnosticKind) {
JavaFileObject source = diagnostic.getSource();
if (source != null) {
if (expectedErrorPath.endsWith(source.toUri().toString()) || fileNameOnly && source.toUri().toString().endsWith(expectedErrorPath)) {
CharSequence sourceContent = source.getCharContent(true);
if (diagnostic.getPosition() != Diagnostic.NOPOS) {
CharSequence contentInError = sourceContent.subSequence((int) diagnostic.getStartPosition(), (int) diagnostic.getEndPosition());
if (contentInError.toString().contains(expectedContentInError)) {
return;
}
}
}
}
}
}
fail("Expected a compilation " + expectedDiagnosticKind + " in " + expectedErrorClassFile.toString() + " on " + expectedContentInError + ", diagnostics: " + result.diagnostics);
}
private static String[] getContents(File file) {
List content = new ArrayList<>();
try (BufferedReader input = new BufferedReader(new FileReader(file))) {
String line = null; // not declared within while loop
while ((line = input.readLine()) != null) {
content.add(line);
}
} catch (IOException ex) {
ex.printStackTrace();
}
return content.toArray(new String[] {});
}
private final List compilerOptions = new ArrayList<>();
private final List> processorsClasses = new ArrayList<>();
public ProcessorTestHelper() {
compilerOptions.add("-classpath");
compilerOptions.add(getClassPath());
compilerOptions.add("-s");
String outputPath = ensureOutputDirectory().getAbsolutePath();
compilerOptions.add(outputPath);
compilerOptions.add("-d");
compilerOptions.add(outputPath);
}
public File getOuputDirectory() {
return ensureOutputDirectory();
}
public void addProcessor(Class processorClass) {
processorsClasses.add(processorClass);
}
public void addProcessorParameter(String key, String value) {
addCompilerOptions("-A" + key + "=" + value);
}
public final void addCompilerOptions(String... compilerOptions) {
for (String compilerOption : compilerOptions) {
this.compilerOptions.add(compilerOption);
}
}
public String toPath(Package packageName) {
return toPath(packageName.getName());
}
public String toPath(String packageName) {
return packageName.replace(".", "/");
}
/**
* Attempts to compile the given compilation units using the Java Compiler
* API.
*
* The compilation units and all their dependencies are expected to be on
* the classpath.
*
* @param compilationUnits
* the classes to compile
* @return the {@link Diagnostic diagnostics} returned by the compilation,
* as demonstrated in the documentation for {@link JavaCompiler}
*/
public CompileResult compileFiles(Type... compilationUnits) {
assert compilationUnits != null;
List files = new ArrayList<>();
addCollection(files, compilationUnits);
return compileFiles(files);
}
public CompileResult compileFiles(Object... elements) {
assert elements != null;
List files = new ArrayList<>();
for (Object element : elements) {
if (element instanceof Type) {
addCollection(files, (Type) element);
} else if (element instanceof String) {
files.add(new File((String) element));
}
}
return compileFiles(files);
}
public CompileResult compileFiles(File... compilationUnits) {
return compileFiles(Arrays.asList(compilationUnits));
}
public CompileResult compileFiles(Collection compilationUnits) {
DiagnosticCollector diagnosticCollector = new DiagnosticCollector<>();
JavaCompiler compiler = ToolProvider.getSystemJavaCompiler();
try (StandardJavaFileManager fileManager = compiler.getStandardFileManager(diagnosticCollector, null, null)) {
CompilationTask task = compiler.getTask(null, fileManager, diagnosticCollector, compilerOptions, null, fileManager.getJavaFileObjectsFromFiles(compilationUnits));
List processors = new ArrayList<>();
for (Class processorClass : processorsClasses) {
try {
processors.add(processorClass.newInstance());
} catch (Exception e) {
throw new RuntimeException(e);
}
}
task.setProcessors(processors);
task.call();
} catch (IOException e) {
// we should always be able to close the manager
}
return new CompileResult(diagnosticCollector.getDiagnostics());
}
public void assertCompilationErrorOn(Class expectedErrorClass, String expectedContentInError, CompileResult result) throws IOException {
assertCompilationErrorOn(toFile(expectedErrorClass), expectedContentInError, result);
}
public void assertCompilationWarningOn(Class expectedErrorClass, String expectedContentInError, CompileResult result) throws IOException {
assertCompilationWarningOn(toFile(expectedErrorClass), expectedContentInError, result);
}
private File ensureOutputDirectory() {
File outputDir = new File(OUTPUT_DIRECTORY);
if (!outputDir.exists()) {
outputDir.mkdirs();
}
return outputDir;
}
public void ensureOutputDirectoryIsEmpty() {
File outputDir = new File(OUTPUT_DIRECTORY);
String[] childs = outputDir.list();
if (childs != null && childs.length > 0) {
deleteDirectoryRecursively(outputDir);
outputDir.mkdirs();
}
}
private void deleteDirectoryRecursively(File directory) {
File[] childs = directory.listFiles();
if (childs != null) {
for (File file : childs) {
if (file.isDirectory()) {
deleteDirectoryRecursively(file);
} else {
file.delete();
}
}
}
directory.delete();
}
private void addCollection(List files, Collection compilationUnits) {
if (compilationUnits == null) {
return;
}
addCollection(files, compilationUnits.toArray(new Type[] {}));
}
private void addCollection(List files, T... compilationUnits) {
if (compilationUnits == null) {
return;
}
for (T element : compilationUnits) {
addCollection(files, element);
}
}
private void addCollection(List files, T element) {
assert element != null;
if (element instanceof Class) {
File file = toFile((Class) element);
if (file != null) {
files.add(file);
} else {
// These are innerclasses, etc ... that should not be
// defined in this way
}
} else if (element instanceof Package) {
ClassFinder classFinder = new ClassFinder();
addCollection(files, classFinder.findClassesInPackage(((Package) element).getName()));
}
}
private String convertClassNameToResourcePath(String name) {
return name.replace(".", File.separator);
}
public File toFile(Class clazz) {
File file = new File(TEST_SOURCE_FOLDER + File.separator + convertClassNameToResourcePath(clazz.getCanonicalName()) + SOURCE_FILE_SUFFIX);
if (!file.exists()) {
file = new File(MAIN_SOURCE_FOLDER + File.separator + convertClassNameToResourcePath(clazz.getCanonicalName()) + SOURCE_FILE_SUFFIX);
if (!file.exists()) {
return null;
}
}
return file;
}
protected String getClassPath() {
String classPath = System.getProperty("maven.test.class.path");
if (classPath == null || classPath.length() == 0) {
return System.getProperty("java.class.path");
}
classPath = classPath.replaceAll(", ", isWindows() ? ";" : ":").trim();
return "\"" + classPath.substring(1, classPath.length() - 2).trim() + ";" + new File("target\\classes").getAbsolutePath() + "\"";
}
private String getOsName() {
return System.getProperty("os.name");
}
private boolean isWindows() {
return getOsName().startsWith("Windows");
}
private static String join(String[] array) {
return Arrays.toString(array).replaceAll(",", "\n");
}
}