Class SubcommandTests

src/test/java/picocli/SubcommandTests.java:48–3054

import static picocli.TestUtil.setTraceLevel;

public class SubcommandTests {
    @Rule
    public final SystemErrRule systemErrRule = new SystemErrRule().enableLog().muteForSuccessfulTests();

    @Rule
    public final SystemOutRule systemOutRule = new SystemOutRule().enableLog().muteForSuccessfulTests();

    // allows tests to set any kind of properties they like, without having to individually roll them back
    @Rule
    public final TestRule restoreSystemProperties = new RestoreSystemProperties();

    @Rule
    public final ProvideSystemProperty ansiOFF = new ProvideSystemProperty("picocli.ansi", "false");

    @Command(name = "top")
    static class MainCommand { @Option(names = "-a") boolean a; public boolean equals(Object o) { return getClass().equals(o.getClass()); }}
    static class ChildCommand1 { @Option(names = "-b") boolean b; public boolean equals(Object o) { return getClass().equals(o.getClass()); }}
    static class ChildCommand2 { @Option(names = "-c") boolean c; public boolean equals(Object o) { return getClass().equals(o.getClass()); }}
    static class GrandChild1Command1 { @Option(names = "-d") boolean d; public boolean equals(Object o) { return getClass().equals(o.getClass()); }}
    static class GrandChild1Command2 { @Option(names = "-e") CustomType e; public boolean equals(Object o) { return getClass().equals(o.getClass()); }}
    static class GrandChild2Command1 { @Option(names = "-f") boolean f; public boolean equals(Object o) { return getClass().equals(o.getClass()); }}
    static class GrandChild2Command2 { @Option(names = "-g") boolean g; public boolean equals(Object o) { return getClass().equals(o.getClass()); }}
    static class GreatGrandChild2Command2_1 {
        @Option(names = "-h") boolean h;
        @Option(names = {"-t", "--type"}) CustomType customType;
        public boolean equals(Object o) { return getClass().equals(o.getClass()); }
    }

    static class CustomType implements ITypeConverter<CustomType> {
        private final String val;
        private CustomType(String val) { this.val = val; }
        public CustomType convert(String value) { return new CustomType(value); }
    }

    @Test
    public void testAddSubcommandWithoutNameRequiresAnnotationName() {
        CommandLine cmd = new CommandLine(new MainCommand());
        try {
            cmd.addSubcommand(new ChildCommand1());
            fail("Expected exception");
        } catch (InitializationException ex) {
            assertEquals("Cannot add subcommand with null name to top", ex.getMessage());
        }
    }

    @Command(name = "annotationName")
    static class SubcommandWithAnnotationName {}

    @Test
    public void testAddSubcommandWithoutNameUsesInstanceAnnotationName() {
        CommandLine cmd = new CommandLine(new MainCommand());
        Object userObject = new SubcommandWithAnnotationName();
        cmd.addSubcommand(userObject);
        assertTrue(cmd.getSubcommands().containsKey("annotationName"));
        assertSame(userObject, cmd.getSubcommands().get("annotationName").getCommand());
    }

    @Test