}

    @Override
    protected extractResultsFrom(TestFile projectDir) {
        [
            "org/acme/Test.tokens",
            "org/acme/TestBaseListener.java",
            "org/acme/TestLexer.java",
            "org/acme/TestLexer.tokens",
            "org/acme/TestListener.java",
            "org/acme/TestParser.java",
        ].collect { projectDir.file("build/generated-src/antlr/main/$it").text }.join("\n")
    }

        import java.io.IOException;
        import java.io.StringReader;
        import org.acme.TestLexer;
        import org.acme.TestParser;

        public class Main {
            public static void main(String[] args) throws IOException {
                TestLexer l = new TestLexer(new ANTLRInputStream(new StringReader("test")));
                TestParser p = new TestParser(new CommonTokenStream(l));
            }

            public class Main {
                public static void main(String[] args) throws IOException {
                    TestLexer lexer = new TestLexer(new ANTLRFileStream(args[0]));
                    CommonTokenStream tokens = new CommonTokenStream(lexer);
                    TestParser parser = new TestParser(tokens);
                    try {
                        parser.list();

            }
        """
    }

    @Override
    protected extractResultsFrom(TestFile projectDir) {
        def result = [
            "Test.tokens",
            "org/acme/test/TestLexer.java",
            "org/acme/test/TestParser.java",
        ]
            .collect { projectDir.file("build/generated-src/antlr/main/$it").text.split(/\n/) }
            .flatten()

func TestSetIsEmpty(t *testing.T) {
	if !(Set{}).AsSelector().Empty() {
		t.Errorf("Empty set should be empty")
	}
	if !(NewSelector()).Empty() {
		t.Errorf("Nil Selector should be empty")
	}
}

func TestLexer(t *testing.T) {
	testcases := []struct {
		s string
		t Token
	}{
		{"", EndOfStringToken},
		{",", CommaToken},
		{"notin", NotInToken},
		{"in", InToken},
		{"=", EqualsToken},