/
FormatterIntegrationTest.java
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/
FormatterIntegrationTest.java
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/*
* Copyright 2016 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.palantir.javaformat.java;
import static com.palantir.javaformat.java.FileBasedTests.assumeJavaVersionForTest;
import static com.palantir.javaformat.java.FileBasedTests.isRecreate;
import static org.assertj.core.api.Assertions.assertThat;
import com.palantir.javaformat.Newlines;
import com.palantir.javaformat.jupiter.ParameterizedClass;
import java.io.IOException;
import java.util.List;
import org.junit.jupiter.api.Assumptions;
import org.junit.jupiter.api.TestTemplate;
import org.junit.jupiter.api.extension.ExtendWith;
import org.junit.jupiter.api.parallel.Execution;
import org.junit.jupiter.api.parallel.ExecutionMode;
@ExtendWith(ParameterizedClass.class)
@Execution(ExecutionMode.CONCURRENT)
public class FormatterIntegrationTest {
private static FileBasedTests tests = new FileBasedTests(FormatterIntegrationTest.class, "testdata");
@ParameterizedClass.Parameters(name = "{0}")
public static List<Object[]> data() throws IOException {
return tests.paramsAsNameInputOutput();
}
private final String name;
private final String input;
private final String expected;
private final String separator;
public FormatterIntegrationTest(String name, String input, String expected) {
this.name = name;
this.input = input;
this.expected = expected;
this.separator = isRecreate() ? null : Newlines.getLineEnding(expected);
}
/**
* If enabled, then {@link DebugRenderer} will produce an output at {@link DebugRenderer#getOutputFile()}. This can
* then be viewed in a browser by running the following once (after which it will auto-reload whenever the debug
* output file changes):
*
* <pre>
* cd debugger
* yarn start
* </pre>
*
* <p>Warning: don't turn this on for all tests. The debugger will always write to the same file.
*/
private static boolean isDebugMode() {
return Boolean.getBoolean("debugOutput");
}
@TestTemplate
public void format() {
assumeJavaVersionForTest(name);
try {
String output = createFormatter().formatSource(input);
if (isRecreate()) {
tests.writeFormatterOutput(name, output);
return;
}
assertThat(output).describedAs("bad output for " + name).isEqualTo(expected);
} catch (FormatterException e) {
throw new RuntimeException(String.format("Formatter crashed on %s", name), e);
}
}
private static Formatter createFormatter() {
return new Formatter(
JavaFormatterOptions.builder()
.style(JavaFormatterOptions.Style.PALANTIR)
.build(),
isDebugMode(),
JavaFormatterInternalOptions.builder().build());
}
@TestTemplate
public void idempotentLF() {
assumeJavaVersionForTest(name);
Assumptions.assumeFalse(isRecreate(), "Not running when recreating test outputs");
try {
String mangled = expected.replace(separator, "\n");
String output = createFormatter().formatSource(mangled);
assertThat(output).describedAs("bad output for " + name).isEqualTo(mangled);
} catch (FormatterException e) {
throw new RuntimeException(String.format("Formatter crashed on %s", name), e);
}
}
@TestTemplate
public void idempotentCR() {
assumeJavaVersionForTest(name);
Assumptions.assumeFalse(isRecreate(), "Not running when recreating test outputs");
try {
String mangled = expected.replace(separator, "\r");
String output = createFormatter().formatSource(mangled);
assertThat(output).describedAs("bad output for " + name).isEqualTo(mangled);
} catch (FormatterException e) {
throw new RuntimeException(String.format("Formatter crashed on %s", name), e);
}
}
@TestTemplate
public void idempotentCRLF() {
assumeJavaVersionForTest(name);
Assumptions.assumeFalse(isRecreate(), "Not running when recreating test outputs");
try {
String mangled = expected.replace(separator, "\r\n");
String output = createFormatter().formatSource(mangled);
assertThat(output).describedAs("bad output for " + name).isEqualTo(mangled);
} catch (FormatterException e) {
throw new RuntimeException(String.format("Formatter crashed on %s", name), e);
}
}
}