this.includeGroups.addAll(Arrays.asList(includeGroups));
        return this;
    }

    public TestNGOptions excludeGroups(String... excludeGroups) {
        this.excludeGroups.addAll(Arrays.asList(excludeGroups));
        return this;
    }

    public TestNGOptions useDefaultListeners() {
        useDefaultListeners = true;
        return this;
    }

        testngOptions.includeGroups(groups)

        then:
        testngOptions.includeGroups == groups as Set
        testngOptions.excludeGroups.empty
    }

    def testExcludeGroups() {
        when:
        testngOptions.excludeGroups(groups)

        then:
        testngOptions.excludeGroups == groups as Set
        testngOptions.includeGroups.empty
    }

    def copyFromOverridesOldOptions() {
        given: