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/*******************************************************************************
* Copyright (c) 2009, 2021 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Marc R. Hoffmann - initial API and implementation
*
*******************************************************************************/
package org.jacoco.cli.internal.commands;
import static org.junit.Assert.assertArrayEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.HashSet;
import java.util.Set;
import org.jacoco.cli.internal.CommandTestBase;
import org.jacoco.core.internal.InputStreams;
import org.jacoco.core.internal.instr.InstrSupport;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.MethodVisitor;
/**
* Unit tests for {@link Instrument}.
*/
public class InstrumentTest extends CommandTestBase {
@Rule
public TemporaryFolder tmp = new TemporaryFolder();
@Test
public void should_print_usage_when_no_options_are_given()
throws Exception {
execute("instrument");
assertFailure();
assertContains("\"--dest\"", err);
assertContains(
"Usage: java -jar jacococli.jar instrument [<sourcefiles> ...]",
err);
}
@Test
public void should_instrument_class_files_and_copy_resources_when_folder_is_given()
throws Exception {
File destdir = tmp.getRoot();
execute("instrument", "--dest", destdir.getAbsolutePath(),
getClassPath());
assertOk();
assertContains("[INFO] 14 classes instrumented to "
+ destdir.getAbsolutePath(), out);
// non class-file resources are copied:
assertTrue(new File(destdir,
"org/jacoco/cli/internal/commands/test-resource.properties")
.isFile());
assertInstrumented(new File(destdir,
"org/jacoco/cli/internal/commands/InstrumentTest.class"));
}
@Test
public void should_instrument_class_files_to_dest_folder_when_class_files_are_given()
throws Exception {
File destdir = tmp.getRoot();
File src = new File(getClassPath(),
"org/jacoco/cli/internal/commands/InstrumentTest.class");
execute("instrument", "--dest", destdir.getAbsolutePath(),
src.getAbsolutePath());
assertOk();
assertContains(
"[INFO] 1 classes instrumented to " + destdir.getAbsolutePath(),
out);
assertInstrumented(new File(destdir, "InstrumentTest.class"));
}
@Test
public void should_not_instrument_anything_when_no_source_is_given()
throws Exception {
File destdir = tmp.getRoot();
execute("instrument", "--dest", destdir.getAbsolutePath());
assertOk();
assertArrayEquals(new String[0], destdir.list());
}
@Test
public void should_not_create_dest_file_when_source_class_is_broken()
throws Exception {
File srcdir = new File(tmp.getRoot(), "src");
srcdir.mkdir();
File destdir = new File(tmp.getRoot(), "dest");
destdir.mkdir();
OutputStream out = new FileOutputStream(
new File(srcdir, "Broken.class"));
out.write((byte) 0xca);
out.write((byte) 0xfe);
out.write((byte) 0xba);
out.write((byte) 0xbe);
out.write((byte) 0x00);
out.write((byte) 0x00);
out.write((byte) 0x00);
out.write((byte) 50);
out.close();
try {
execute("instrument", "--dest", destdir.getAbsolutePath(),
srcdir.getAbsolutePath());
fail("exception expected");
} catch (IOException expected) {
}
assertFalse(new File(destdir, "Broken.class").exists());
}
private void assertInstrumented(File classfile) throws IOException {
InputStream in = new FileInputStream(classfile);
final ClassReader reader = InstrSupport
.classReaderFor(InputStreams.readFully(in));
in.close();
final Set<String> methods = new HashSet<String>();
reader.accept(new ClassVisitor(InstrSupport.ASM_API_VERSION) {
@Override
public MethodVisitor visitMethod(int access, String name,
String descriptor, String signature, String[] exceptions) {
methods.add(name);
return null;
}
}, 0);
assertTrue(methods.contains("$jacocoInit"));
}
}
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