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/*
* Copyright 2021 Google Inc.
*
* 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.
*/
package com.google.googlejavaformat.java;
import static com.google.common.truth.Truth.assertThat;
import static com.google.common.truth.Truth8.assertThat;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.ServiceLoader;
import java.util.spi.ToolProvider;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
/** Tests for {@link GoogleJavaFormatToolProvider}. */
@RunWith(JUnit4.class)
public class GoogleJavaFormatToolProviderTest {
@Test
public void testUsageOutputAfterLoadingViaToolName() {
String name = "google-java-format";
assertThat(
ServiceLoader.load(ToolProvider.class).stream()
.map(ServiceLoader.Provider::get)
.map(ToolProvider::name))
.contains(name);
ToolProvider format = ToolProvider.findFirst(name).get();
StringWriter out = new StringWriter();
StringWriter err = new StringWriter();
int result = format.run(new PrintWriter(out, true), new PrintWriter(err, true), "--help");
assertThat(result).isNotEqualTo(0);
String usage = err.toString();
// Check that doc links are included.
assertThat(usage).containsMatch("http.*/google-java-format");
assertThat(usage).contains("Usage: google-java-format");
}
}
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