forked from sindresorhus/capture-website
/
test.js
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test.js
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import fs from 'fs';
import test from 'ava';
import imageSize from 'image-size';
import isJpg from 'is-jpg';
import isPng from 'is-png';
import pify from 'pify';
import PNG from 'png-js';
import createTestServer from 'create-test-server';
import devices from 'puppeteer/DeviceDescriptors';
import tempy from 'tempy';
import delay from 'delay';
import toughCookie from 'tough-cookie';
import fileUrl from 'file-url';
import captureWebsite, {_startBrowser} from '.';
const defaultResponse = (() => {
const style = 'background-color: black; width: 100px; height: 100px;';
return `<body style="margin: 0;"><div style="${style}"></div></body>`;
})();
const createDefaultServer = async () => {
const server = await createTestServer();
server.get('/', (request, response) => {
response.end(defaultResponse);
});
return server;
};
const getPngPixels = async buffer => {
const png = new PNG(buffer);
const pixels = await pify(png.decode.bind(png), {errorFirst: false})();
return pixels;
};
let server;
let browser;
let instance;
test.before(async () => {
server = await createDefaultServer();
browser = await _startBrowser();
instance = (url, options) => captureWebsite.buffer(url, {
...options,
_browser: browser,
_keepAlive: true
});
});
test.after(async () => {
await browser.close();
await server.close();
});
test('capture screenshot - from url', async t => {
t.true(isPng(await instance(server.url, {
width: 100,
height: 100
})));
});
test('capture screenshot - from local file', async t => {
t.true(isPng(await instance('fixtures/local-file.html', {
width: 100,
height: 100
})));
});
test('capture screenshot - from file URL', async t => {
t.true(isPng(await instance(fileUrl('fixtures/local-file.html'), {
width: 100,
height: 100
})));
});
test('capture screenshot - from data URL', async t => {
t.true(isPng(await instance('data:text/html,<h1>Awesome!</h1>', {
width: 100,
height: 100
})));
});
test('captureWebsite.file()', async t => {
const filePath = tempy.file();
await captureWebsite.file(server.url, filePath, {
width: 100,
height: 100
});
t.true(isPng(fs.readFileSync(filePath)));
});
test('captureWebsite.base64()', async t => {
const screenshot = await captureWebsite.base64(server.url, {
width: 100,
height: 100
});
t.true(isPng(Buffer.from(screenshot, 'base64')));
});
test('`type` option', async t => {
t.true(isJpg(await instance(server.url, {
width: 100,
height: 100,
type: 'jpeg'
})));
});
test('`scaleFactor` option', async t => {
const sizeOption = 100;
const scaleFactor = 4;
const expectedSize = sizeOption * scaleFactor;
const size = imageSize(await instance(server.url, {
width: sizeOption,
height: sizeOption,
scaleFactor
}));
t.is(size.width, expectedSize);
t.is(size.height, expectedSize);
});
test('`emulateDevice` option', async t => {
const device = devices['iPhone X'];
const size = imageSize(await instance(server.url, {
emulateDevice: device.name
}));
const {viewport} = device;
t.is(size.width, viewport.width * viewport.deviceScaleFactor);
t.is(size.height, viewport.height * viewport.deviceScaleFactor);
});
test('`fullPage` option', async t => {
const size = imageSize(await instance(server.url, {
width: 100,
height: 200,
scaleFactor: 1,
fullPage: true
}));
t.is(size.width, 100);
t.true(size.height > 100);
});
test('`timeout` option', async t => {
const server = await createTestServer();
server.get('/', async (request, response) => {
await delay(5000);
response.end();
});
await t.throwsAsync(instance(server.url, {
width: 100,
height: 100,
timeout: 1
}), /1000ms exceeded/);
await server.close();
});
test('`element` option - capture DOM element', async t => {
const size = imageSize(await instance(server.url, {
width: 400,
height: 400,
scaleFactor: 1,
element: 'div'
}));
t.is(size.width, 100);
t.is(size.height, 100);
});
test('`element` option - wait for DOM element', async t => {
const server = await createTestServer();
server.get('/', async (request, response) => {
response.end(`
<body>
<div style="width: 100px; height: 100px;"></div>
<script>
window.setTimeout(() => {
document.querySelector('div').style.display = 'block';
}, 5000);
</script>
</body>
`);
});
const size = imageSize(await instance(server.url, {
width: 400,
height: 400,
scaleFactor: 1,
element: 'div'
}));
t.is(size.width, 100);
t.is(size.height, 100);
await server.close();
});
test('`hideElements` option', async t => {
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
hideElements: [
'div'
]
}));
t.is(pixels[0], 255);
});
test('`removeElements` option', async t => {
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
removeElements: [
'div'
]
}));
t.is(pixels[0], 255);
});
test('`clickElement` option', async t => {
const server = await createTestServer();
server.get('/', async (request, response) => {
response.end(`
<body style="margin: 0;">
<div style="background-color: black; width: 100px; height: 100px;"></div>
<script>
document.querySelector('div').addEventListener('click', function () {
this.style.backgroundColor = 'red';
});
</script>
</body>
`);
});
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
clickElement: 'div'
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
await server.close();
});
test('`modules` option - inline', async t => {
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
modules: [
'document.querySelector(\'div\').style.backgroundColor = \'red\';'
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`modules` option - file', async t => {
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
modules: [
'fixtures/script.js'
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`modules` option - url', async t => {
const server = await createTestServer();
server.get('/', (request, response) => {
response.end(defaultResponse);
});
server.get('/module.js', (request, response) => {
response.set('content-type', 'text/javascript');
response.end('document.querySelector(\'div\').style.backgroundColor = \'red\';');
});
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
modules: [
`${server.url}/module.js`
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`scripts` option - inline', async t => {
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
scripts: [
'document.querySelector(\'div\').style.backgroundColor = \'red\';'
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`scripts` option - file', async t => {
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
scripts: [
'fixtures/script.js'
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`scripts` option - url', async t => {
const server = await createTestServer();
server.get('/', (request, response) => {
response.end(defaultResponse);
});
server.get('/script.js', (request, response) => {
response.set('content-type', 'text/javascript');
response.end('document.querySelector(\'div\').style.backgroundColor = \'red\';');
});
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
scripts: [
`${server.url}/script.js`
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`styles` option - inline', async t => {
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
styles: [
'div { background-color: red !important; }'
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`styles` option - file', async t => {
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
styles: [
'fixtures/style.css'
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`styles` option - url', async t => {
const server = await createTestServer();
server.get('/', (request, response) => {
response.end(defaultResponse);
});
server.get('/style.css', (request, response) => {
response.set('content-type', 'text/css');
response.end('div { background-color: red !important; }');
});
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
styles: [
`${server.url}/style.css`
]
}));
t.is(pixels[0], 255);
t.is(pixels[1], 0);
t.is(pixels[2], 0);
});
test('`headers` option', async t => {
const fixture = 'unicorn';
const server = await createTestServer();
let headers;
server.get('/', (request, response) => {
headers = request.headers;
response.end();
});
await instance(server.url, {
width: 100,
height: 100,
headers: {
fixture
}
});
t.is(headers.fixture, fixture);
await server.close();
});
test('`cookies` option`', async t => {
const server = await createTestServer();
server.get('/', (request, response) => {
const color = toughCookie.parse(request.headers.cookie).value || 'white';
const style = `
position: absolute;
top: 0;
right: 0;
bottom: 0;
left: 0;
background-color: ${color};
`;
response.end(`<body><div style="${style}"></div></body>`);
});
const pixels = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
cookies: [
{
name: 'color',
value: 'black',
domain: 'localhost'
}
]
}));
t.is(pixels[0], 0);
const pixels2 = await getPngPixels(await instance(server.url, {
width: 100,
height: 100,
cookies: [
'color=black'
]
}));
t.is(pixels2[0], 0);
await server.close();
});
test('`authentication` option', async t => {
const authentication = {
username: 'foo',
password: 'bar'
};
const url = `https://httpbin.org/basic-auth/${authentication.username}/${authentication.password}`;
t.true(isPng(await instance(url, {
authentication
})));
});
test('`overwrite` option', async t => {
const filePath = tempy.file();
await t.notThrowsAsync(async () => {
await captureWebsite.file(server.url, filePath, {
width: 100,
height: 100
});
await captureWebsite.file(server.url, filePath, {
width: 100,
height: 100,
overwrite: true
});
});
});
test('handle redirects', async t => {
const server = await createTestServer();
server.get('/', (request, response) => {
response.end(defaultResponse);
});
server.get('/redirect', (request, response) => {
response.redirect(server.url);
});
const pixels = await getPngPixels(await instance(`${server.url}/redirect`, {
width: 100,
height: 100
}));
t.is(pixels[0], 0);
await server.close();
});