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core(asset-saver): stop creating screenshot files during --save-assets #6066

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Sep 24, 2018
Merged

core(asset-saver): stop creating screenshot files during --save-assets #6066

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9955a1a
core(asset-saver): stop creating screenshot files during --save-assets
paulirish Sep 19, 2018
451b70b
remove tests.
paulirish Sep 19, 2018
8995d15
remaining cleanup
paulirish Sep 22, 2018
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63 changes: 0 additions & 63 deletions lighthouse-core/lib/asset-saver.js
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Original file line number Diff line number Diff line change
Expand Up @@ -20,58 +20,13 @@ const artifactsFilename = 'artifacts.json';
const traceSuffix = '.trace.json';
const devtoolsLogSuffix = '.devtoolslog.json';

/** @typedef {{timestamp: number, datauri: string}} Screenshot */
/**
* @typedef {object} PreparedAssets
* @property {string} passName
* @property {LH.Trace} traceData
* @property {LH.DevtoolsLog} devtoolsLog
* @property {string} screenshotsHTML
* @property {Array<Screenshot>} screenshots
*/

/**
* Generate basic HTML page of screenshot filmstrip
* @param {Array<Screenshot>} screenshots
* @return {string}
*/
function screenshotDump(screenshots) {
return `
<!doctype html>
<meta charset="utf-8">
<title>screenshots</title>
<style>
html {
overflow-x: scroll;
overflow-y: hidden;
height: 100%;
background-image: linear-gradient(to left, #4ca1af , #c4e0e5);
background-attachment: fixed;
padding: 10px;
}
body {
white-space: nowrap;
background-image: linear-gradient(to left, #4ca1af , #c4e0e5);
width: 100%;
margin: 0;
}
img {
margin: 4px;
}
</style>
<body>
<script>
var shots = ${JSON.stringify(screenshots)};

shots.forEach(s => {
var i = document.createElement('img');
i.src = s.datauri;
i.title = s.timestamp;
document.body.appendChild(i);
});
</script>
`;
}

/**
* Load artifacts object from files located within basePath
Expand Down Expand Up @@ -168,15 +123,7 @@ async function prepareAssets(artifacts, audits) {
const trace = artifacts.traces[passName];
const devtoolsLog = artifacts.devtoolsLogs[passName];

// Avoid Runner->AssetSaver->Runner circular require by loading Runner here.
const Runner = require('../runner.js');
const computedArtifacts = Runner.instantiateComputedArtifacts();
/** @type {Array<Screenshot>} */
const screenshots = await computedArtifacts.requestScreenshots(trace);

const traceData = Object.assign({}, trace);
const screenshotsHTML = screenshotDump(screenshots);

if (audits) {
const evts = new Metrics(traceData.traceEvents, audits).generateFakeEvents();
traceData.traceEvents = traceData.traceEvents.concat(evts);
Expand All @@ -186,8 +133,6 @@ async function prepareAssets(artifacts, audits) {
passName,
traceData,
devtoolsLog,
screenshotsHTML,
screenshots,
});
}

Expand Down Expand Up @@ -298,14 +243,6 @@ async function saveAssets(artifacts, audits, pathWithBasename) {
fs.writeFileSync(devtoolsLogFilename, JSON.stringify(passAssets.devtoolsLog, null, 2));
log.log('saveAssets', 'devtools log saved to disk: ' + devtoolsLogFilename);

const screenshotsHTMLFilename = `${pathWithBasename}-${index}.screenshots.html`;
fs.writeFileSync(screenshotsHTMLFilename, passAssets.screenshotsHTML);
log.log('saveAssets', 'screenshots saved to disk: ' + screenshotsHTMLFilename);

const screenshotsJSONFilename = `${pathWithBasename}-${index}.screenshots.json`;
fs.writeFileSync(screenshotsJSONFilename, JSON.stringify(passAssets.screenshots, null, 2));
log.log('saveAssets', 'screenshots saved to disk: ' + screenshotsJSONFilename);

const streamTraceFilename = `${pathWithBasename}-${index}${traceSuffix}`;
log.log('saveAssets', 'streaming trace file to disk: ' + streamTraceFilename);
await saveTrace(passAssets.traceData, streamTraceFilename);
Expand Down
16 changes: 0 additions & 16 deletions lighthouse-core/test/lib/asset-saver-test.js
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Original file line number Diff line number Diff line change
Expand Up @@ -56,22 +56,6 @@ describe('asset-saver helper', () => {
assert.ok(fileContents.includes('"message": "first"'));
fs.unlinkSync(filename);
});

it('screenshots html file saved to disk with data', () => {
const ssHTMLFilename = 'the_file-0.screenshots.html';
const ssFileContents = fs.readFileSync(ssHTMLFilename, 'utf8');
assert.ok(/<!doctype/gim.test(ssFileContents));
const expectedScreenshotContent = '{"timestamp":668545858.596';
assert.ok(ssFileContents.includes(expectedScreenshotContent), 'unexpected screenshot html');
fs.unlinkSync(ssHTMLFilename);
});

it('screenshots json file saved to disk with data', () => {
const ssJSONFilename = 'the_file-0.screenshots.json';
const ssContents = JSON.parse(fs.readFileSync(ssJSONFilename, 'utf8'));
assert.equal(ssContents[0].timestamp, 668545858.596, 'unexpected screenshot json');
fs.unlinkSync(ssJSONFilename);
});
});

describe('prepareAssets', () => {
Expand Down