private static String assertValidOptionName(Option option, String elementName, Class<?> declaredClass) {
        if (option.option().length() == 0) {
            throw new OptionValidationException(String.format("No option name set on '%s' in class '%s'.", elementName, declaredClass.getName()));
        }
        return option.option();
    }

    <ExternalSystemSettings>
      <option name="executionName" />
      <option name="externalProjectPath" value="$PROJECT_DIR$" />
      <option name="externalSystemIdString" value="GRADLE" />
      <option name="scriptParameters" value="" />
      <option name="taskDescriptions">
        <list />
      </option>
      <option name="taskNames">
        <list>
          <option value=":analysis:symbol-light-classes:test" />

  <component name="IssueNavigationConfiguration">
    <option name="links">
      <list>
        <IssueNavigationLink>
          <option name="issueRegexp" value="[A-Z]+\-\d+" />
          <option name="linkRegexp" value="http://youtrack.jetbrains.com/issue/$0" />
        </IssueNavigationLink>
        <IssueNavigationLink>
          <option name="issueRegexp" value="EA\-(\d+)" />

    <ExternalSystemSettings>
      <option name="executionName" />
      <option name="externalProjectPath" value="$PROJECT_DIR$" />
      <option name="externalSystemIdString" value="GRADLE" />
      <option name="scriptParameters" value="--stacktrace" />
      <option name="taskDescriptions">
        <list />
      </option>
      <option name="taskNames">
        <list>
          <option value=":js:js.tests:test" />

    <ExternalSystemSettings>
      <option name="executionName" />
      <option name="externalProjectPath" value="$PROJECT_DIR$/generators/analysis-api-generator" />
      <option name="externalSystemIdString" value="GRADLE" />
      <option name="scriptParameters" value="" />
      <option name="taskDescriptions">
        <list />
      </option>
      <option name="taskNames">
        <list>

    }

    def "reports multiple values"() {
        when:
        option.addArgument("foo")
        option.addArgument("bar")

        then:
        option.hasValue()
        ["foo", "bar"] == option.values

        when:
        option.getValue()

        then:
        thrown(IllegalStateException)
    }

        1 * receiver.accept(MyEnum.SHALT)

        when:
        option.applyFromProperty([test: 'nOt'], receiver)

        then:
        1 * receiver.accept(MyEnum.NOT)

        when:
        option.applyFromProperty([test: 'pazz'], receiver)

        then:
        RuntimeException ex = thrown()
        ex.message == "Option my option doesn't accept value 'pazz'. Possible values are [THOU, SHALT, NOT, PASS]"
    }

    <ExternalSystemSettings>
      <option name="executionName" />
      <option name="externalProjectPath" value="$PROJECT_DIR$" />
      <option name="externalSystemIdString" value="GRADLE" />
      <option name="scriptParameters" value="" />
      <option name="taskDescriptions">
        <list />
      </option>
      <option name="taskNames">
        <list>
          <option value="generateTests" />
        </list>

            option.hasDescription(_) >> option
        when:
            converter.configure(parser)
        then:
            1 * option.hasArguments() >> option
            1 * option.hasDescription(converter.propertyOptionDescription) >> option
            1 * parser.option(converter.propertyOption, converter.propertyOptionDetailed) >> option
    }

    def "parses properties args"() {
        expect:

        parameter.logLevel == LogLevel.DEBUG
    }

    def "can provide parallelism option as command-line option"() {
        expect:
        def parameter = convert("--max-workers", "123")
        parameter.maxWorkerCount == 123
    }

    def "can provide parallelism option as system property on command-line"() {
        expect:
        def parameter = convert("-Dorg.gradle.workers.max=123")