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/**

* Copyright 2015 Google Inc. All Rights Reserved.

*

* 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.

*/

import static com.jcabi.matchers.RegexMatchers.containsPattern;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertThat;

import org.junit.After;

import org.junit.Before;

import org.junit.Test;

import java.io.ByteArrayOutputStream;

import java.io.PrintStream;

/**

* Tests the Cloud Logging sample.

*/

public class ListLogsTest {

private final ByteArrayOutputStream stdout = new ByteArrayOutputStream();

private final ByteArrayOutputStream stderr = new ByteArrayOutputStream();

private static final PrintStream REAL_OUT = System.out;

private static final PrintStream REAL_ERR = System.err;

@Before

public void setUp() {

System.setOut(new PrintStream(stdout));

System.setErr(new PrintStream(stderr));

}

@After

public void tearDown() {

System.setOut(ListLogsTest.REAL_OUT);

System.setErr(ListLogsTest.REAL_ERR);

}

@Test

public void testUsage() throws Exception {

ListLogs.main(new String[] {});

assertEquals("Usage: ListLogs <project-name>\n", stderr.toString());

}

@Test

public void testListLogs() throws Exception {

ListLogs.main(new String[] {"cloud-samples-tests"});

String out = stdout.toString();

// Don't know what logs the test project will have.

assertThat(out, containsPattern("Done\\."));

}

}