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/*******************************************************************************
* Copyright (c) 2009, 2011 Mountainminds GmbH & Co. KG and Contributors
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.runtime;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertSame;
import java.util.concurrent.Callable;
import org.jacoco.core.data.ExecutionDataStore;
import org.jacoco.core.test.TargetLoader;
import org.junit.Before;
import org.junit.Test;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Type;
/**
* Unit tests for {@link ExecutionDataAccess}.
*/
public class ExecutionDataAccessTest {
private ExecutionDataStore store;
private Object access;
@Before
public void setup() {
store = new ExecutionDataStore();
access = new ExecutionDataAccess(store);
}
@Test
public void testGetExecutionData1() {
Object[] args = new Object[] { Long.valueOf(123), "Foo",
Integer.valueOf(3) };
access.equals(args);
boolean[] data = (boolean[]) args[0];
assertEquals(3, data.length, 0.0);
assertFalse(data[0]);
assertFalse(data[1]);
assertFalse(data[2]);
assertSame(store.get(123).getData(), data);
assertEquals("Foo", store.get(123).getName());
}
@Test
public void testGenerateArgumentArray() throws Exception {
final ClassWriter writer = new ClassWriter(0);
writer.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, "Sample", null,
"java/lang/Object",
new String[] { Type.getInternalName(Callable.class) });
// Constructor
MethodVisitor mv = writer.visitMethod(Opcodes.ACC_PUBLIC, "<init>",
"()V", null, new String[0]);
mv.visitCode();
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>",
"()V");
mv.visitInsn(Opcodes.RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
// call()
mv = writer.visitMethod(Opcodes.ACC_PUBLIC, "call",
"()Ljava/lang/Object;", null, new String[0]);
mv.visitCode();
ExecutionDataAccess.generateArgumentArray(1000, "Sample", 15, mv);
mv.visitInsn(Opcodes.ARETURN);
mv.visitMaxs(5, 1);
mv.visitEnd();
writer.visitEnd();
final TargetLoader loader = new TargetLoader("Sample",
writer.toByteArray());
Callable<?> callable = (Callable<?>) loader.newTargetInstance();
final Object[] args = (Object[]) callable.call();
assertEquals(3, args.length, 0.0);
assertEquals(Long.valueOf(1000), args[0]);
assertEquals("Sample", args[1]);
assertEquals(Integer.valueOf(15), args[2]);
}
@Test
public void testGenerateAccessCall() throws Exception {
final boolean[] data = store.get(Long.valueOf(1234), "Sample", 5)
.getData();
final ClassWriter writer = new ClassWriter(0);
writer.visit(Opcodes.V1_5, Opcodes.ACC_PUBLIC, "Sample", null,
"java/lang/Object",
new String[] { Type.getInternalName(Callable.class) });
// Constructor
MethodVisitor mv = writer.visitMethod(Opcodes.ACC_PUBLIC, "<init>",
"(Ljava/lang/Object;)V", null, new String[0]);
mv.visitCode();
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>",
"()V");
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitVarInsn(Opcodes.ALOAD, 1);
mv.visitFieldInsn(Opcodes.PUTFIELD, "Sample", "access",
"Ljava/lang/Object;");
mv.visitInsn(Opcodes.RETURN);
mv.visitMaxs(2, 2);
mv.visitEnd();
// call()
mv = writer.visitMethod(Opcodes.ACC_PUBLIC, "call",
"()Ljava/lang/Object;", null, new String[0]);
mv.visitCode();
mv.visitVarInsn(Opcodes.ALOAD, 0);
mv.visitFieldInsn(Opcodes.GETFIELD, "Sample", "access",
"Ljava/lang/Object;");
ExecutionDataAccess.generateAccessCall(1234, "Sample", 5, mv);
mv.visitInsn(Opcodes.ARETURN);
mv.visitMaxs(6, 1);
mv.visitEnd();
writer.visitField(Opcodes.ACC_PRIVATE, "access", "Ljava/lang/Object;",
null, null);
writer.visitEnd();
final TargetLoader loader = new TargetLoader("Sample",
writer.toByteArray());
Callable<?> callable = (Callable<?>) loader.getTargetClass()
.getConstructor(Object.class).newInstance(access);
assertSame(data, callable.call());
}
}
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