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Fix integration tests on Windows

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This commit is contained in:
DC
2016-09-19 03:11:26 -07:00
parent f4b2e78e72
commit 2200fffa1e
6 changed files with 32 additions and 6 deletions
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32
test/setup.js
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@@ -15,7 +15,8 @@ module.exports = {
waitForLoad,
wait,
resetTestDataDir,
deleteTestDataDir
deleteTestDataDir,
copy
}
// Runs WebTorrent Desktop.
@@ -97,6 +98,7 @@ function compareIgnoringTransparency (bufActual, bufExpected) {
if (Buffer.compare(bufActual, bufExpected) === 0) return true
// Otherwise, compare pixel by pixel
let sumSquareDiff = 0
const pngA = PNG.sync.read(bufActual)
const pngE = PNG.sync.read(bufExpected)
if (pngA.width !== pngE.width || pngA.height !== pngE.height) return false
@@ -108,10 +110,21 @@ function compareIgnoringTransparency (bufActual, bufExpected) {
for (let x = 0; x < w; x++) {
const i = (y * w + x) * 4
if (de[i + 3] === 0) continue // Skip transparent pixels
if (da[i] !== de[i] || da[i + 1] !== de[i + 1] || da[i + 2] !== de[i + 2]) return false
const ca = (da[i] << 16) | (da[i + 1] << 8) | da[i + 2]
const ce = (de[i] << 16) | (de[i + 1] << 8) | de[i + 2]
if (ca === ce) continue
// Add pixel diff to running sum
// This is necessary on Windows, where rendering apparently isn't quite deterministic
// and a few pixels in the screenshot will sometimes be off by 1. (Visually identical.)
sumSquareDiff += (da[i] - de[i]) * (da[i] - de[i])
sumSquareDiff += (da[i + 1] - de[i + 1]) * (da[i + 1] - de[i + 1])
sumSquareDiff += (da[i + 2] - de[i + 2]) * (da[i + 2] - de[i + 2])
}
}
return true
const l2Distance = Math.round(Math.sqrt(sumSquareDiff))
console.log('screenshot diff l2 distance: ' + l2Distance)
return l2Distance < 100
}
// Resets the test directory, containing config.json, torrents, downloads, etc
@@ -133,6 +146,9 @@ function compareDownloadFolder (t, dirname, filenames) {
const dirpath = path.join(config.TEST_DIR_DOWNLOAD, dirname)
try {
const actualFilenames = fs.readdirSync(dirpath)
if (filenames === null) {
return t.fail('expected download folder to be absent, but it\'s here: ' + dirpath)
}
const expectedSorted = filenames.slice().sort()
const actualSorted = actualFilenames.slice().sort()
t.deepEqual(actualSorted, expectedSorted, 'download folder contents: ' + dirname)
@@ -168,3 +184,13 @@ function extractImportantFields (parsedTorrent) {
const priv = parsedTorrent.private // private is a reserved word in JS
return { infoHash, name, announce, urlList, comment, 'private': priv }
}
function copy (pathFrom, pathTo) {
try {
fs.copySync(pathFrom, pathTo)
} catch (e) {
// Windows sometimes gives us an EPERM error even tho the copy happened...
if (process.platform !== 'win32' || e.code !== 'EPERM') throw e
console.log('ignoring windows copy EPERM error', e)
}
}