overleaf/services/filestore/test/unit/js/ImageOptimiserTests.js

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const sinon = require('sinon')
const chai = require('chai')
const { expect } = chai
const modulePath = '../../../app/js/ImageOptimiser.js'
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const { FailedCommandError } = require('../../../app/js/Errors')
const SandboxedModule = require('sandboxed-module')
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describe('ImageOptimiser', function () {
let ImageOptimiser, SafeExec, logger
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const sourcePath = '/wombat/potato.eps'
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beforeEach(function () {
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SafeExec = {
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promises: sinon.stub().resolves(),
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}
logger = {
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warn: sinon.stub(),
}
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ImageOptimiser = SandboxedModule.require(modulePath, {
requires: {
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'./SafeExec': SafeExec,
'logger-sharelatex': logger,
'@overleaf/metrics': {
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Timer: sinon.stub().returns({ done: sinon.stub() }),
},
},
})
})
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describe('compressPng', function () {
it('should convert the file', function (done) {
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ImageOptimiser.compressPng(sourcePath, err => {
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expect(err).not.to.exist
expect(SafeExec.promises).to.have.been.calledWith([
'optipng',
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sourcePath,
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])
done()
})
})
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it('should return the error', function (done) {
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SafeExec.promises.rejects('wombat herding failure')
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ImageOptimiser.compressPng(sourcePath, err => {
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expect(err.toString()).to.equal('wombat herding failure')
done()
})
})
})
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describe('when optimiser is sigkilled', function () {
const expectedError = new FailedCommandError('', 'SIGKILL', '', '')
let error
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beforeEach(function (done) {
SafeExec.promises.rejects(expectedError)
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ImageOptimiser.compressPng(sourcePath, err => {
error = err
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done()
})
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})
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it('should not produce an error', function () {
expect(error).not.to.exist
})
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it('should log a warning', function () {
expect(logger.warn).to.have.been.calledOnce
})
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})
})