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/*******************************************************************************
* Copyright (c) 2009, 2020 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.assertEquals;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;
import org.jacoco.cli.internal.CommandTestBase;
import org.jacoco.core.data.ExecutionData;
import org.jacoco.core.data.ExecutionDataWriter;
import org.jacoco.core.tools.ExecFileLoader;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
/**
* Unit tests for {@link Merge}.
*/
public class MergeTest extends CommandTestBase {
@Rule
public TemporaryFolder tmp = new TemporaryFolder();
@Test
public void should_print_usage_when_no_options_are_given()
throws Exception {
execute("merge");
assertFailure();
assertContains("\"--destfile\"", err);
assertContains("java -jar jacococli.jar merge [<execfiles> ...]", err);
}
@Test
public void should_print_warning_when_no_exec_files_are_provided()
throws Exception {
File dest = new File(tmp.getRoot(), "merged.exec");
execute("merge", "--destfile", dest.getAbsolutePath());
assertOk();
assertContains("[WARN] No execution data files provided.", out);
Set<String> names = loadExecFile(dest);
assertEquals(Collections.emptySet(), names);
}
@Test
public void should_merge_exec_files() throws Exception {
File a = createExecFile("a");
File b = createExecFile("b");
File c = createExecFile("c");
File dest = new File(tmp.getRoot(), "merged.exec");
execute("merge", "--destfile", dest.getAbsolutePath(),
a.getAbsolutePath(), b.getAbsolutePath(), c.getAbsolutePath());
assertOk();
Set<String> names = loadExecFile(dest);
assertEquals(new HashSet<String>(Arrays.asList("a", "b", "c")), names);
}
private File createExecFile(String name) throws IOException {
File file = new File(tmp.getRoot(), name + ".exec");
final FileOutputStream execout = new FileOutputStream(file);
ExecutionDataWriter writer = new ExecutionDataWriter(execout);
writer.visitClassExecution(new ExecutionData(name.hashCode(), name,
new boolean[] { true }));
execout.close();
return file;
}
private Set<String> loadExecFile(File file) throws IOException {
ExecFileLoader loader = new ExecFileLoader();
loader.load(file);
Set<String> names = new HashSet<String>();
for (ExecutionData d : loader.getExecutionDataStore().getContents()) {
names.add(d.getName());
}
return names;
}
}
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