将集合（列表）用作布尔值的Groovy语义

Groovy 2.14.12

我相信我已经正确地解释了布尔值。对于以下代码，我收到了一条公关评论：

没有这样的语义。您可以自己检查：

断言null==true | 假的 断言null==false | false null既不是真的也不是假的。您链接的测试用例确保httpRequest.requestBody始终是！空，所以它将 总是通过

测试用例：1

@Test
    void "successfully_execute_invokeSNAPRestAPI_with_HttpRequest_without_optional"() {

        when:
        Object stepScript = loadScript([(RequestResponseMock.HTTP_RESPONSE_STATUS):
                                                HttpConstants.HTTP_RESPONSE_CODE_OK,
                                        (RequestResponseMock.HTTP_RESPONSE_CONTENT):
                                                RequestResponseMock.AUTHORIZE_APPROVED_RESULT,
        ])

        HttpRequest httpRequest = new HttpRequest(RequestResponseMock.SNAP_SERVER_URL_VALUE,
                HttpConstants.HTTP_METHODS.PUT.name(),
                HttpConstants.REQUEST_CONTENT_TYPE_JSON,
                HttpConstants.ACCEPT_TYPE_JSON
        )

        and:
        HttpClient httpClient = new HttpClient(stepScript)
        Map response = httpClient.invokeSNAPRestAPI(httpRequest)

        then:
        assert stepScript
        assert response
        assert response.get(HttpConstants.HTTP_RESPONSE_CODE) == HttpConstants.HTTP_RESPONSE_CODE_OK
    }

测试用例通过，输出：

requestBody: null
validResponseCodes: null

测试用例：2

@Unroll
    @Test
    void "successfully_execute_invokeSNAPRestAPI_with_HttpRequest_optional_parameters"() {

        when:
        Object stepScript = loadScript([(RequestResponseMock.HTTP_RESPONSE_STATUS):
                                                HttpConstants.HTTP_RESPONSE_CODE_OK,
                                        (RequestResponseMock.HTTP_RESPONSE_CONTENT):
                                                RequestResponseMock.AUTHORIZE_APPROVED_RESULT,
                                       ])

        HttpRequest httpRequest = new HttpRequest(RequestResponseMock.SNAP_SERVER_URL_VALUE,
                HttpConstants.HTTP_METHODS.PUT.name(),
                HttpConstants.REQUEST_CONTENT_TYPE_JSON,
                HttpConstants.ACCEPT_TYPE_JSON
        )
        if(setOptionalParams) {
            httpRequest.setRequestBody(requestBody)
            httpRequest.setValidResponseCodes(validResponseCodes)
        }

        and:
        HttpClient httpClient = new HttpClient(stepScript)
        Map response = httpClient.invokeSNAPRestAPI(httpRequest)

        then:
        assert stepScript
        assert response
        assert response.get(HttpConstants.HTTP_RESPONSE_CODE) == HttpConstants.HTTP_RESPONSE_CODE_OK

        where:
        setOptionalParams | requestBody                                                   | validResponseCodes
        false             | JsonOutput.toJson(RequestResponseMock.NORMAL_CHANGE_PAYLOAD)  | VALID_RESPONSES
        true              | JsonOutput.toJson(RequestResponseMock.NORMAL_CHANGE_PAYLOAD)  | VALID_RESPONSES
        true              | EMPTY_STRING                                                  | VALID_RESPONSES
        true              | null                                                          | VALID_RESPONSES
        true              | JsonOutput.toJson(RequestResponseMock.NORMAL_CHANGE_PAYLOAD)  | null
        true              | JsonOutput.toJson(RequestResponseMock.NORMAL_CHANGE_PAYLOAD)  | []
    }

这些测试也通过，输出：

requestBody: {"description":"Change notes for new version:","short_description":"Deploy new version" }
if requestBody evaluated to true
validResponseCodes: [200, 201, 400]
if validResponseCodes evaluated to true

requestBody: 
validResponseCodes: [200, 201, 400]
if validResponseCodes evaluated to true

requestBody: null
validResponseCodes: [200, 201, 400]
if validResponseCodes evaluated to true

requestBody: {"description":"Change notes for new version:","short_description":"Deploy new version" }
if requestBody evaluated to true
validResponseCodes: null

requestBody: {"description":"Change notes for new version:","short_description":"Deploy new version" }
if requestBody evaluated to true
validResponseCodes: []

编辑：

---

那么，如果一个列表根本没有初始化（在上面的HttpRequest对象中），它（实际上计算为false），那么如何假设它将计算为false呢？这是因为Groovy强制它为false吗？

您是否在问为什么您的审阅者拒绝了您的代码？乍一看，您从不比较requestBody，而是使用它来发送请求。如果你认为这是一个很好的SO问题，那么请删减它以显示实际问题，并提供你看到的错误/堆栈跟踪。编辑原始问题以了解Groovy truth。

@Unroll
    @Test
    void "successfully_execute_invokeSNAPRestAPI_with_HttpRequest_optional_parameters"() {

        when:
        Object stepScript = loadScript([(RequestResponseMock.HTTP_RESPONSE_STATUS):
                                                HttpConstants.HTTP_RESPONSE_CODE_OK,
                                        (RequestResponseMock.HTTP_RESPONSE_CONTENT):
                                                RequestResponseMock.AUTHORIZE_APPROVED_RESULT,
                                       ])

        HttpRequest httpRequest = new HttpRequest(RequestResponseMock.SNAP_SERVER_URL_VALUE,
                HttpConstants.HTTP_METHODS.PUT.name(),
                HttpConstants.REQUEST_CONTENT_TYPE_JSON,
                HttpConstants.ACCEPT_TYPE_JSON
        )
        if(setOptionalParams) {
            httpRequest.setRequestBody(requestBody)
            httpRequest.setValidResponseCodes(validResponseCodes)
        }

        and:
        HttpClient httpClient = new HttpClient(stepScript)
        Map response = httpClient.invokeSNAPRestAPI(httpRequest)

        then:
        assert stepScript
        assert response
        assert response.get(HttpConstants.HTTP_RESPONSE_CODE) == HttpConstants.HTTP_RESPONSE_CODE_OK

        where:
        setOptionalParams | requestBody                                                   | validResponseCodes
        false             | JsonOutput.toJson(RequestResponseMock.NORMAL_CHANGE_PAYLOAD)  | VALID_RESPONSES
        true              | JsonOutput.toJson(RequestResponseMock.NORMAL_CHANGE_PAYLOAD)  | VALID_RESPONSES
        true              | EMPTY_STRING                                                  | VALID_RESPONSES
        true              | null                                                          | VALID_RESPONSES
        true              | JsonOutput.toJson(RequestResponseMock.NORMAL_CHANGE_PAYLOAD)  | null
        true              | JsonOutput.toJson(RequestResponseMock.NORMAL_CHANGE_PAYLOAD)  | []
    }

requestBody: {"description":"Change notes for new version:","short_description":"Deploy new version" }
if requestBody evaluated to true
validResponseCodes: [200, 201, 400]
if validResponseCodes evaluated to true

requestBody: 
validResponseCodes: [200, 201, 400]
if validResponseCodes evaluated to true

requestBody: null
validResponseCodes: [200, 201, 400]
if validResponseCodes evaluated to true

requestBody: {"description":"Change notes for new version:","short_description":"Deploy new version" }
if requestBody evaluated to true
validResponseCodes: null

requestBody: {"description":"Change notes for new version:","short_description":"Deploy new version" }
if requestBody evaluated to true
validResponseCodes: []

5. The Groovy Truth
Groovy decides whether a expression is true or false by applying the rules given below.

assert true
assert !false
5.2. Collections and Arrays
Non-empty Collections and arrays are true.

assert [1, 2, 3]
assert ![]