TestGetSourceVersions.java

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @bug     6395981 6458819 7025784 8028543 8028544 8193291
 * @summary JavaCompilerTool and Tool must specify version of JLS and JVMS
 * @author  Peter von der Ah\u00e9
 * @modules java.compiler
 *          jdk.compiler
 * @run main/fail TestGetSourceVersions
 * @run main/fail TestGetSourceVersions RELEASE_3  RELEASE_5  RELEASE_6
 * @run main/fail TestGetSourceVersions RELEASE_0  RELEASE_1  RELEASE_2  RELEASE_3  RELEASE_4
 *                                      RELEASE_5  RELEASE_6
 * @run main TestGetSourceVersions      RELEASE_3  RELEASE_4  RELEASE_5  RELEASE_6  RELEASE_7
 *                                      RELEASE_8  RELEASE_9  RELEASE_10 RELEASE_11
 */

import java.util.EnumSet;
import java.util.Set;
import javax.lang.model.SourceVersion;
import javax.tools.Tool;
import javax.tools.ToolProvider;
import static javax.lang.model.SourceVersion.*;

public class TestGetSourceVersions {
    public static void main(String... args) {
        Tool compiler = ToolProvider.getSystemJavaCompiler();
        Set<SourceVersion> expected = EnumSet.noneOf(SourceVersion.class);
        for (String arg : args)
            expected.add(SourceVersion.valueOf(arg));
        Set<SourceVersion> found = compiler.getSourceVersions();
        Set<SourceVersion> notExpected = EnumSet.copyOf(found);
        for (SourceVersion version : expected) {
            if (!found.contains(version))
                throw new AssertionError("Expected source version not found: " + version);
            else
                notExpected.remove(version);
        }
        if (!notExpected.isEmpty())
            throw new AssertionError("Unexpected source versions: " + notExpected);
    }
}