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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* 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.jetbrains.java.decompiler;
import org.jetbrains.java.decompiler.main.decompiler.ConsoleDecompiler;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.*;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
public class SingleClassesTest {
private DecompilerTestFixture fixture;
@Before
public void setUp() throws IOException {
fixture = new DecompilerTestFixture();
fixture.setUp();
}
@After
public void tearDown() {
fixture.tearDown();
fixture = null;
}
@Test public void testClassFields() { doTest("pkg/TestClassFields"); }
@Test public void testClassLambda() { doTest("pkg/TestClassLambda"); }
@Test public void testClassLoop() { doTest("pkg/TestClassLoop"); }
@Test public void testClassSwitch() { doTest("pkg/TestClassSwitch"); }
@Test public void testClassTypes() { doTest("pkg/TestClassTypes"); }
@Test public void testClassVar() { doTest("pkg/TestClassVar"); }
@Test public void testClassNestedInitializer() { doTest("pkg/TestClassNestedInitializer"); }
@Test public void testClassCast() { doTest("pkg/TestClassCast"); }
@Test public void testDeprecations() { doTest("pkg/TestDeprecations"); }
@Test public void testExtendsList() { doTest("pkg/TestExtendsList"); }
@Test public void testMethodParameters() { doTest("pkg/TestMethodParameters"); }
@Test public void testCodeConstructs() { doTest("pkg/TestCodeConstructs"); }
@Test public void testConstants() { doTest("pkg/TestConstants"); }
@Test public void testEnum() { doTest("pkg/TestEnum"); }
@Test public void testDebugSymbols() { doTest("pkg/TestDebugSymbols"); }
@Test public void testInvalidMethodSignature() { doTest("InvalidMethodSignature"); }
private void doTest(String testFile) {
try {
File classFile = new File(fixture.getTestDataDir(), "/classes/" + testFile + ".class");
assertTrue(classFile.isFile());
String testName = classFile.getName().replace(".class", "");
ConsoleDecompiler decompiler = fixture.getDecompiler();
for (File file : collectClasses(classFile)) {
decompiler.addSpace(file, true);
}
decompiler.decompileContext();
File decompiledFile = new File(fixture.getTargetDir(), testName + ".java");
assertTrue(decompiledFile.isFile());
File referenceFile = new File(fixture.getTestDataDir(), "results/" + testName + ".dec");
assertTrue(referenceFile.isFile());
String decompiledContent = getContent(decompiledFile);
String referenceContent = getContent(referenceFile);
assertEquals(referenceContent, decompiledContent);
}
catch (Exception e) {
throw new RuntimeException(e);
}
}
private static List<File> collectClasses(File classFile) {
List<File> files = new ArrayList<File>();
files.add(classFile);
File parent = classFile.getParentFile();
if (parent != null) {
final String pattern = classFile.getName().replace(".class", "") + "\\$.+\\.class";
File[] inner = parent.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String name) {
return name.matches(pattern);
}
});
if (inner != null) Collections.addAll(files, inner);
}
return files;
}
private static String getContent(File file) throws IOException {
Reader reader = new InputStreamReader(new FileInputStream(file), "UTF-8");
try {
char[] buff = new char[16 * 1024];
StringBuilder content = new StringBuilder();
int n;
while ((n = reader.read(buff)) > 0) {
content.append(buff, 0, n);
}
return content.toString();
}
finally {
reader.close();
}
}
}
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