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/*
* Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
import com.sun.tools.classfile.Attribute;
import com.sun.tools.classfile.ClassFile;
import com.sun.tools.classfile.SourceFile_attribute;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.tools.JavaFileObject;
import toolbox.ToolBox;
/**
* Base class for Source file attribute tests. Checks expected file name for specified classes in the SourceFile attribute.
* To add new tests you should extend the SourceFileTestBase class and invoke {@link #test} for static sources
* or {@link #compileAndTest} for generated sources. For more information see corresponding methods.
*
* @see #test
* @see #compileAndTest
*/
public class SourceFileTestBase extends TestBase {
/**
* Checks expected fileName for the specified class in the SourceFile attribute.
*
* @param classToTest class to check its SourceFile attribute
* @param fileName expected name of the file from which the test file is compiled.
*/
protected void test(Class<?> classToTest, String fileName) throws Exception {
assertAttributePresent(ClassFile.read(getClassFile(classToTest)), fileName);
}
/**
* Checks expected fileName for the specified class in the SourceFile attribute.
*
* @param classToTest class name to check its SourceFile attribute
* @param fileName expected name of the file from which the test file is compiled.
*/
protected void test(String classToTest, String fileName) throws Exception {
assertAttributePresent(ClassFile.read(getClassFile(classToTest + ".class")), fileName);
}
/**
* Checks expected fileName for the specified class in the SourceFile attribute.
*
* @param classToTest path of class to check its SourceFile attribute
* @param fileName expected name of the file from which the test file is compiled.
*/
protected void test(Path classToTest, String fileName) throws Exception {
assertAttributePresent(ClassFile.read(classToTest), fileName);
}
/**
* Compiles sourceCode and for each specified class name checks the SourceFile attribute.
* The file name is extracted from source code.
*
* @param sourceCode source code to compile
* @param classesToTest class names to check their SourceFile attribute.
*/
protected void compileAndTest(String sourceCode, String... classesToTest) throws Exception {
Map<String, ? extends JavaFileObject> classes = compile(sourceCode).getClasses();
String fileName = ToolBox.getJavaFileNameFromSource(sourceCode);
for (String className : classesToTest) {
assertAttributePresent(ClassFile.read(classes.get(className).openInputStream()), fileName);
}
}
private void assertAttributePresent(ClassFile classFile, String fileName) throws Exception {
//We need to count attributes with the same names because there is no appropriate API in the ClassFile.
List<SourceFile_attribute> sourceFileAttributes = new ArrayList<>();
for (Attribute a : classFile.attributes.attrs) {
if (Attribute.SourceFile.equals(a.getName(classFile.constant_pool))) {
sourceFileAttributes.add((SourceFile_attribute) a);
}
}
assertEquals(sourceFileAttributes.size(), 1, "Should be the only SourceFile attribute");
SourceFile_attribute attribute = sourceFileAttributes.get(0);
assertEquals(classFile.constant_pool.getUTF8Info(attribute.attribute_name_index).value,
Attribute.SourceFile, "Incorrect attribute name");
assertEquals(classFile.constant_pool.getUTF8Info(attribute.sourcefile_index).value, fileName,
"Incorrect source file name");
assertEquals(attribute.attribute_length, 2, "Incorrect attribute length");
}
}
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