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testing - TestCafe：选择器中的选择器

问题描述

我为我的页面模型开发了一组助手。

这就是 DOM 的样子：

    <div id="parentA">
        <div class="child yes">hello</div>
        <div class="child">world</div>
    </div>
    
    <div id="parentB">
        <div class="child no">hello</div>
        <div class="child">world</div>
    </div>

现在我想检查or中的.child元素之一。#parentA#parentB

import { Selector } from "testcafe";

fixture `children`
    .page `http://localhost:8080/index.html`;

// an example of what I expect.
// this is not how i want to write tests.
test("hard-coded: child in A has class 'yes'", async (t) => {
    const yesChild = Selector("#parentA .child").withText("hello");
    t.expect((await yesChild.classNames).includes("yes"));
});

// helper function for the page model (in a shared module later)
function getParent(name: string) {
    return Selector(`#parent${name}`);
}
// helper function for the page model (in a shared module later)
function getChild() {
    return Selector(".child");
}

// this is how I want to write tests.
test("parametric-find: child in A has class 'yes'", async (t) => {
    const parent = getParent("A");
    const child = getChild().withText("hello");
    const yesChild = parent.find(child); // there is no overload for find that takes another Selector.
    t.expect((await yesChild.classNames).includes("yes"));
});

我认为一种解决方案可能是这样的功能：

async function withinParent(child: Selector, parent: Selector): Selector {
   // how should I implement this?
}

另一种解决方案可能是创建 filterFunction 的高阶函数：

test("parametric-find-descendantChild: child in A has class 'yes'", async (t) => {
    const parent = getParent("A");
    const child = getChild().withText("hello");
    const yesChild = parent.find(descendantChild(child));
    
    t.expect((await yesChild.classNames).includes("yes"));
});
function descendantChild(child: Selector): (node: Element) => boolean {
    // how should I implement this?
}

但是我能想到的所有方法都会导致死胡同。

好吧，我应该写一个功能请求，还是有一个聪明的方法来做到这一点？

标签： testingautomationautomated-testse2e-testingtestcafe

解决方案

您可以链接Selector方法来实现此目的。

function getParent(name) {
    return Selector(`#parent${name}`);
}

function getChildren(selector) {
    return selector.child('.child');
}

test(`parametric-find: child in A has class 'yes'`, async (t) => {
    const parent = getParent('A');
    const child  = getChildren(parent).withText('hello');

    await t.expect(child.classNames).contains('yes');
});

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