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import { expect } from 'chai'
import sinon from 'sinon'
import GithubApiProvider from './github-api-provider.js'
describe('Github API provider', function () {
const baseUrl = 'https://github-api.example.com'
const reserveFraction = 0.333
let mockStandardToken, mockSearchToken, mockGraphqlToken, provider
beforeEach(function () {
provider = new GithubApiProvider({ baseUrl, reserveFraction })
mockStandardToken = { update: sinon.spy(), invalidate: sinon.spy() }
sinon.stub(provider.standardTokens, 'next').returns(mockStandardToken)
mockSearchToken = { update: sinon.spy(), invalidate: sinon.spy() }
sinon.stub(provider.searchTokens, 'next').returns(mockSearchToken)
mockGraphqlToken = { update: sinon.spy(), invalidate: sinon.spy() }
sinon.stub(provider.graphqlTokens, 'next').returns(mockGraphqlToken)
})
context('a search API request', function () {
const mockRequest = (options, callback) => {
callback()
}
it('should obtain an appropriate token', function (done) {
provider.request(mockRequest, '/search', {}, (err, res, buffer) => {
expect(err).to.be.undefined
expect(provider.searchTokens.next).to.have.been.calledOnce
expect(provider.standardTokens.next).not.to.have.been.called
expect(provider.graphqlTokens.next).not.to.have.been.called
done()
})
})
})
context('a graphql API request', function () {
const mockRequest = (options, callback) => {
callback()
}
it('should obtain an appropriate token', function (done) {
provider.request(mockRequest, '/graphql', {}, (err, res, buffer) => {
expect(err).to.be.undefined
expect(provider.searchTokens.next).not.to.have.been.called
expect(provider.standardTokens.next).not.to.have.been.called
expect(provider.graphqlTokens.next).to.have.been.calledOnce
done()
})
})
})
context('a core API request', function () {
const mockRequest = (options, callback) => {
callback()
}
it('should obtain an appropriate token', function (done) {
provider.request(mockRequest, '/repo', {}, (err, res, buffer) => {
expect(err).to.be.undefined
expect(provider.searchTokens.next).not.to.have.been.called
expect(provider.standardTokens.next).to.have.been.calledOnce
expect(provider.graphqlTokens.next).not.to.have.been.called
done()
})
})
})
context('a valid V3 API response', function () {
const rateLimit = 12500
const remaining = 7955
const nextReset = 123456789
const mockResponse = {
statusCode: 200,
headers: {
'x-ratelimit-limit': rateLimit,
'x-ratelimit-remaining': remaining,
'x-ratelimit-reset': nextReset,
},
}
const mockBuffer = Buffer.alloc(0)
const mockRequest = (...args) => {
const callback = args.pop()
callback(null, mockResponse, mockBuffer)
}
it('should invoke the callback', function (done) {
provider.request(mockRequest, '/foo', {}, (err, res, buffer) => {
expect(err).to.equal(null)
expect(Object.is(res, mockResponse)).to.be.true
expect(Object.is(buffer, mockBuffer)).to.be.true
done()
})
})
it('should update the token with the expected values', function (done) {
provider.request(mockRequest, '/foo', {}, (err, res, buffer) => {
expect(err).to.equal(null)
const expectedUsesRemaining =
remaining - Math.ceil(reserveFraction * rateLimit)
expect(mockStandardToken.update).to.have.been.calledWith(
expectedUsesRemaining,
nextReset
)
expect(mockStandardToken.invalidate).not.to.have.been.called
done()
})
})
})
context('a valid V4 API response', function () {
const rateLimit = 12500
const remaining = 7955
const nextReset = 123456789
const mockResponse = {
statusCode: 200,
headers: {},
body: `{
"data": {
"rateLimit": {
"limit": 12500,
"cost": 1,
"remaining": 7955,
"resetAt": "1973-11-29T21:33:09Z"
}
}
}`,
}
const mockBuffer = Buffer.alloc(0)
const mockRequest = (...args) => {
const callback = args.pop()
callback(null, mockResponse, mockBuffer)
}
it('should invoke the callback', function (done) {
provider.request(mockRequest, '/graphql', {}, (err, res, buffer) => {
expect(err).to.equal(null)
expect(Object.is(res, mockResponse)).to.be.true
expect(Object.is(buffer, mockBuffer)).to.be.true
done()
})
})
it('should update the token with the expected values', function (done) {
provider.request(mockRequest, '/graphql', {}, (err, res, buffer) => {
expect(err).to.equal(null)
const expectedUsesRemaining =
remaining - Math.ceil(reserveFraction * rateLimit)
expect(mockGraphqlToken.update).to.have.been.calledWith(
expectedUsesRemaining,
nextReset
)
expect(mockGraphqlToken.invalidate).not.to.have.been.called
done()
})
})
})
context('an unauthorized response', function () {
const mockResponse = { statusCode: 401 }
const mockBuffer = Buffer.alloc(0)
const mockRequest = (...args) => {
const callback = args.pop()
callback(null, mockResponse, mockBuffer)
}
it('should invoke the callback and update the token with the expected values', function (done) {
provider.request(mockRequest, '/foo', {}, (err, res, buffer) => {
expect(err).to.equal(null)
expect(mockStandardToken.invalidate).to.have.been.calledOnce
expect(mockStandardToken.update).not.to.have.been.called
done()
})
})
})
context('a connection error', function () {
const mockRequest = (...args) => {
const callback = args.pop()
callback(Error('connection timeout'))
}
it('should pass the error to the callback', function (done) {
provider.request(mockRequest, '/foo', {}, (err, res, buffer) => {
expect(err).to.be.an.instanceof(Error)
expect(err.message).to.equal('connection timeout')
done()
})
})
})
})