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feat(elementhandle): add elementHandle.$$eval method (#2589)

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Fixes #2401
This commit is contained in:
Vasyl Pahut
2018-05-26 02:56:51 +03:00
committed by Andrey Lushnikov
parent 32f4c173c8
commit 1e07925e26
4 changed files with 69 additions and 5 deletions
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24
test/elementhandle.spec.js
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@@ -318,6 +318,30 @@ module.exports.addTests = function({testRunner, expect}) {
expect(errorMessage).toBe(`Error: failed to find element matching selector ".a"`);
});
});
describe('ElementHandle.$$eval', function() {
it('should work', async({page, server}) => {
await page.setContent('<html><body><div class="tweet"><div class="like">100</div><div class="like">10</div></div></body></html>');
const tweet = await page.$('.tweet');
const content = await tweet.$$eval('.like', nodes => nodes.map(n => n.innerText));
expect(content).toEqual(['100', '10']);
});
it('should retrieve content from subtree', async({page, server}) => {
const htmlContent = '<div class="a">not-a-child-div</div><div id="myId"><div class="a">a1-child-div</div><div class="a">a2-child-div</div></div>';
await page.setContent(htmlContent);
const elementHandle = await page.$('#myId');
const content = await elementHandle.$$eval('.a', nodes => nodes.map(n => n.innerText));
expect(content).toEqual(['a1-child-div', 'a2-child-div']);
});
it('should throw in case of missing selector', async({page, server}) => {
const htmlContent = '<div class="a">not-a-child-div</div><div id="myId"></div>';
await page.setContent(htmlContent);
const elementHandle = await page.$('#myId');
const errorMessage = await elementHandle.$$eval('.a', nodes => nodes.map(n => n.innerText)).catch(error => error.message);
expect(errorMessage).toBe(`Error: failed to find elements matching selector ".a"`);
});
});
describe('ElementHandle.$$', function() {
it('should query existing elements', async({page, server}) => {