如何在 NightWatch 中循环比较字符串

Question

我正在使用 NightWatch JS，我有一个问题，我如何比较字符串并检查 NightwatchJS 循环中的唯一性？

My code module.exports = {

    test: function(client) {
        
        var text1;

        client
            .maximizeWindow()
            .url('https://gitlab.com/')
            .waitForElementVisible('svg.nav-logo', 10 * 1000)
            .click('#CybotCookiebotDialogBodyLevelButtonAccept')
            .useXpath()
            .moveToElement('(//h2[contains(text(),"The latest from our blog")]//following-sibling::div/a/div/h4)',1,1)
            .waitForElementVisible('(//h2[contains(text(),"The latest from our blog")]//following-sibling::div/a/div/h4)', 10 * 1000)
            .elements('xpath','(//h2[contains(text(),"The latest from our blog")]//following-sibling::div/a/div/h4)', 
            function(elements)
            {
               elements.value.forEach(function(elementsObj)
               {
                    client.elementIdText(elementsObj.ELEMENT,function(result){
                        text1 = result.value;
                        console.log(text1);
                    })
               }) 
            })
            .pause(10*1000);
    }
};

在控制台中，我收到了预期的结果（3 个字符串） 有一个问题，我现在如何检查，如何比较每个字符串在循环中是唯一的？

Answer 1

您可以使用 ma​​p 来检查字符串是否唯一。如果地图中已经存在类似的字符串，则永远不会再次添加该字符串。所以在你的情况下，如果所有三个文本都是唯一的，那么地图的大小应该是 3，你可以在测试结束时断言。

let uniqueStrings = new Map()
My code module.exports = {
    test: function(client) {
        var text1;
        client.maximizeWindow()
          .url('https://gitlab.com/')
          .waitForElementVisible('svg.nav-logo', 10 * 1000)
          .click('#CybotCookiebotDialogBodyLevelButtonAccept')
          .useXpath()
          .moveToElement('(//h2[contains(text(),"The latest from our blog")]//following-sibling::div/a/div/h4)', 1, 1)
          .waitForElementVisible('(//h2[contains(text(),"The latest from our blog")]//following-sibling::div/a/div/h4)', 10 * 1000)
          .elements('xpath', '(//h2[contains(text(),"The latest from our blog")]//following-sibling::div/a/div/h4)', function(elements) {
            elements.value.forEach(function(elementsObj) {
                client.elementIdText(elementsObj.ELEMENT, function(result) {
                    text1 = result.value;
                    console.log(text1);
                    uniqueStrings.set(text1.trim())
                })
            })
            client.assert.equal(uniqueStrings.size, 3)
        }).pause(10 * 1000);
    }
};