如何与不匹配的给定值进行比较？

Question

对于脚本语言来说，在类型记录中使用枚举和if else语句有问题。作为一种替代，我使用的是开关情况，而不是其他条件。

我试过了!==，!===，这似乎不管用。如果条件不等于比较值，则枚举的第一个索引不起作用，除非我做了它。

public static async getElementByLocatorType(locatorType: customLocators, locatorValue: string, expectedText?: string) {
        if (locatorType! === customLocators.CSS) {
            return  element(by.css(locatorValue));
        } else if (locatorType === customLocators.XPATH) {
            return element(await by.xpath(locatorValue));
        } else if (locatorType === customLocators.CSSTEXT) {
            return  element(by.cssContainingText(locatorValue, expectedText));
        } else if (locatorType === customLocators.LINKTEXT) {
            return  element(by.linkText(locatorValue));
        } else if (locatorType === customLocators.BUTTONTEXT ) {
            return  element(by.buttonText(locatorValue));
        } else if (locatorType === customLocators.PARTIALBUTTONTEXT) {
            return  element(by.partialButtonText(locatorValue));
        } else if (locatorType === customLocators.PARTIALLINKTEXT ) {
            return  element(by.partialLinkText(locatorValue));
        } else {
            logger.info('Cannot find any locator listed above');
        }

    }


 export enum customLocators {
     'CSS', 'XPATH', 'CSSTEXT', 'LINKTEXT', 'BUTTONTEXT', 'PARTIALBUTTONTEXT', 'PARTIALLINKTEXT'
 }

没有找到的元素(by.css)其他元素工作得很好，除了(枚举的第一个索引) locatorType === customLocators.CSS

Answer 1

如前所述，我使用了开关箱作为一种可以正常工作的替代方案。

  public static async  getElementByLocatorType(locatorType: customLocators, 
    locatorValue: string, expectedText?: string) {
            switch (locatorType) {
                case customLocators.CSS:
                   return  element(by.css(locatorValue));
                    break;
                case customLocators.XPATH:
                    return element(by.xpath(locatorValue));
                    break;
                case customLocators.LINKTEXT:
                    return element(by.linkText(locatorValue));
                    break;
                case customLocators.BUTTONTEXT:
                    return element(by.buttonText(locatorValue));
                    break;
                case customLocators.CSSTEXT:
                    return element(by.cssContainingText(locatorValue, expectedText));
                    break;
                case customLocators.PARTIALLINKTEXT:
                    return element(by.partialLinkText(locatorValue));
                    break;
                case customLocators.PARTIALBUTTONTEXT:
                    return element(by.partialButtonText(locatorValue));
                    break;
                default:
                    logger.info('browser : ' + locatorType + ' is invalid, Please check the selector name..');
            }
        }