| 1 | const { expect } = require('chai')
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| 2 |
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| 3 | const Xvfb = require('../')
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| 4 |
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| 5 | describe('xvfb', function () {
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| 6 | context('onStderrData', function () {
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| 7 | it('accepts callback function', function () {
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| 8 | const cb = () => {}
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| 9 |
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| 10 | const xvfb = new Xvfb({
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| 11 | onStderrData: cb,
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| 12 | })
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| 13 |
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| 14 | expect(xvfb._onStderrData).to.eq(cb)
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| 15 | })
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| 16 |
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| 17 | it('sets default function otherwise', function () {
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| 18 | const xvfb = new Xvfb()
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| 19 |
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| 20 | expect(xvfb._onStderrData).to.be.a('function')
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| 21 | })
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| 22 | })
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| 23 |
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| 24 | context('issue: #1', function () {
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| 25 | beforeEach(function () {
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| 26 | this.xvfb = new Xvfb()
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| 27 | })
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| 28 |
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| 29 | it('issue #1: does not mutate process.env.DISPLAY', function () {
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| 30 | delete process.env.DISPLAY
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| 31 |
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| 32 | expect(process.env.DISPLAY).to.be.undefined
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| 33 |
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| 34 | this.xvfb._setDisplayEnvVariable()
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| 35 | this.xvfb._restoreDisplayEnvVariable()
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| 36 |
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| 37 | expect(process.env.DISPLAY).to.be.undefined
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| 38 | })
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| 39 | })
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| 40 | })
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