Alexandre Bourdin
1b954fa720
Split tests query param overrides GitOrigin-RevId: 8112710d057ddc22cebf37a619dfc969be57b6cc
90 lines
2.5 KiB
JavaScript
90 lines
2.5 KiB
JavaScript
const SandboxedModule = require('sandboxed-module')
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const path = require('path')
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const modulePath = path.join(
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__dirname,
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'../../../../app/src/Features/SplitTests/SplitTestMiddleware'
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)
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const sinon = require('sinon')
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const MockResponse = require('../helpers/MockResponse')
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const MockRequest = require('../helpers/MockRequest')
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describe('SplitTestMiddleware', function () {
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beforeEach(function () {
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this.SplitTestMiddleware = SandboxedModule.require(modulePath, {
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requires: {
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'./SplitTestHandler': (this.SplitTestHandler = {
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promises: {
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assignInLocalsContext: sinon.stub().resolves(),
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},
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}),
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},
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})
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this.req = new MockRequest()
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this.res = new MockResponse()
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this.next = sinon.stub()
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})
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it('assign multiple split test variants in locals', async function () {
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this.SplitTestHandler.promises.assignInLocalsContext
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.withArgs(this.req, 'ui-overhaul')
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.resolves({
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variant: 'default',
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})
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this.SplitTestHandler.promises.assignInLocalsContext
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.withArgs(this.req, 'other-test')
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.resolves({
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variant: 'foobar',
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})
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const middleware = this.SplitTestMiddleware.loadAssignmentsInLocals([
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'ui-overhaul',
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'other-test',
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])
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await middleware(this.req, this.res, this.next)
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sinon.assert.calledWith(
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this.SplitTestHandler.promises.assignInLocalsContext,
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this.req,
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this.res,
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'ui-overhaul'
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)
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sinon.assert.calledWith(
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this.SplitTestHandler.promises.assignInLocalsContext,
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this.req,
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this.res,
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'other-test'
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)
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sinon.assert.calledOnce(this.next)
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})
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it('assign no split test variant in locals', async function () {
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const middleware = this.SplitTestMiddleware.loadAssignmentsInLocals([])
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await middleware(this.req, this.res, this.next)
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sinon.assert.notCalled(this.SplitTestHandler.promises.assignInLocalsContext)
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sinon.assert.calledOnce(this.next)
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})
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it('exception thrown by assignment does not fail the request', async function () {
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this.SplitTestHandler.promises.assignInLocalsContext
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.withArgs(this.req, this.res, 'some-test')
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.throws(new Error('failure'))
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const middleware = this.SplitTestMiddleware.loadAssignmentsInLocals([
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'some-test',
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])
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await middleware(this.req, this.res, this.next)
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sinon.assert.calledWith(
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this.SplitTestHandler.promises.assignInLocalsContext,
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this.req,
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this.res,
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'some-test'
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)
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sinon.assert.calledOnce(this.next)
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})
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})
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