jdk-24/test/langtools/tools/javac/options/HelpOutputColumnWidthTest.java
2023-04-13 15:08:55 +00:00

95 lines
3.0 KiB
Java

/*
* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
/**
* @test
* @bug 8296420
* @summary Verify command line help output does not exceed maximum column width
* @library /tools/lib
* @modules jdk.compiler/com.sun.tools.javac.api
* jdk.compiler/com.sun.tools.javac.main
* jdk.compiler/com.sun.tools.javac.util
* @build toolbox.ToolBox toolbox.JavacTask
* @run main HelpOutputColumnWidthTest
*/
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.List;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import toolbox.TestRunner;
import toolbox.ToolBox;
import toolbox.JavacTask;
import toolbox.Task;
public class HelpOutputColumnWidthTest extends TestRunner {
public static final int MAX_COLUMNS = 80;
protected ToolBox tb;
public HelpOutputColumnWidthTest() {
super(System.err);
tb = new ToolBox();
}
protected void runTests() throws Exception {
runTests(m -> new Object[] { Paths.get(m.getName()) });
}
@Test
public void testHelp(Path base) throws Exception {
this.checkColumnWidth("--help");
}
@Test
public void testHelpExtra(Path base) throws Exception {
this.checkColumnWidth("--help-extra");
}
private void checkColumnWidth(String... args) throws Exception {
// Compile source
List<String> log = new JavacTask(tb, Task.Mode.CMDLINE)
.options(args)
.run(Task.Expect.SUCCESS)
.writeAll()
.getOutputLines(Task.OutputKind.DIRECT);
// Check column width
final String tooLongLines = log.stream()
.filter(line -> line.length() > MAX_COLUMNS)
.map(String::trim)
.collect(Collectors.joining("]\n ["));
if (!tooLongLines.isEmpty())
throw new Exception("output line(s) too long:\n [" + tooLongLines + "]");
}
public static void main(String... args) throws Exception {
new HelpOutputColumnWidthTest().runTests();
}
}