WDIO Javascript Mocha/Chai 在期望失败时使 NPM 崩溃

Question

运行测试时，it 块正在执行，我得到了这个输出。

我无法理解的是为什么 npm 命令会出现错误退出？

3) GAMETRIBE CELL C WAP DOI - SUCCESS FLOW Webdriver should target and click the subscription CTA:
An element could not be located on the page using the given search parameters ("[class='button']").
running phantomjs
Error: An element could not be located on the page using the given search parameters ("[class='button']").
    at getText() - index.js:312:3


npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! webdriver_typescript@1.0.0 test-cellc: `node ./node_modules/typescript/lib/tsc.js && node ./node_modules/webdriverio/bin/wdio ./dist/wdio.conf.mcm.js --suite cellcWapDoi`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the webdriver_typescript@1.0.0 test-cellc script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /Users/davidabes/.npm/_logs/2017-12-14T06_44_07_155Z-debug.log

我的测试用例如下所示：

export default function() {
it('Webdriver should target and click the subscription CTA', function() {
    const yesLink = browser.element("[class='button']");
    console.log(yesLink.getText());
    console.log(yesLink.getTagName());
    yesLink.click();
});

Answer 1

如果有任何测试失败，那么似乎 mocha 退出并显示错误代码 1 ...我只是不记得我在文档中的哪个位置阅读了这个。