我对 TypeScript 和量角器非常陌生,希望将从下拉列表中提取的所有值放入数组中,以便我可以从另一个页面验证它。
export class AdditionalCostPage extends BasePage {
getAllUsageCategoryElements() {
var usageCategory: string[] = [];
element
.all(
by.xpath(
"//p-dropdown[@name='usageCategory']/div/div[3]/div/ul/li[*]/span"
)
)
.each(function(element, index) {
element.getText().then(function(text) {
console.log('list text from drop list is ' + text);
usageCategory.push(text);
});
});
console.log('Size of the array is ' + usageCategory.length);
}
}
结果中,usageCategory 的大小为 0,而且我注意到大小 0 打印在“console.log("list text from drop list is " + text);”之前被处决。请推荐任何人。提前致谢。
这是因为.each
方法从ElementArrayFinder
返回一个承诺。看http://www.protractortest.org/#/api?view=ElementArrayFinder.prototype.each http://www.protractortest.org/#/api?view=ElementArrayFinder.prototype.each
切换到异步/等待
您应该考虑切换到异步/等待测试。这将使 Promise 更容易处理。您需要指定SELENIUM_PROMISE_MANAGER: false
在你的量角器配置中。 StackOverflow 中还提供了其他异步/等待测试的示例。请记住,您需要等待每个异步方法。
// When adding in async to this method, by default it returns a Promise<void>.
async getAllUsageCategoryElements() {
// Note: You should not use xpath as a selector since it makes
// your tests brittle.
// See Locator Strategies in http://www.protractortest.org/#/style-guide
// Also nit: think about using "const" or "let" over "var".
const usageCategory = element.all(
by.xpath(
"//p-dropdown[@name='usageCategory']/div/div[3]/div/ul/li[*]/span"
);
// Think about using fat arrows instead of "function"
await usageCategory.each(async (element, index) => {
const text = await element.getText();
console.log('list text from drop list is ' + text);
});
// You could push the ElementFinder object to an array and find the length
// or you could get the count. See
// http://www.protractortest.org/#/api?view=ElementArrayFinder.prototype.count
console.log('Size of the array is ' + await usageCategory.count());
}
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