add tests setup and basic suites

Author: danielcondemarin

__mocks__/aws-sdk.js

@@ -0,0 +1,34 @@
+const promisifyMock = (mockFn) => {
+  const promise = jest.fn()
+  mockFn.mockImplementation(() => ({
+    promise
+  }))
+
+  return promise
+}
+
+const mockCreateDistribution = jest.fn()
+const mockCreateDistributionPromise = promisifyMock(mockCreateDistribution)
+
+const mockGetDistributionConfig = jest.fn()
+const mockGetDistributionConfigPromise = promisifyMock(mockGetDistributionConfig)
+
+const mockDeleteDistribution = jest.fn()
+const mockDeleteDistributionPromise = promisifyMock(mockDeleteDistribution)
+
+jest.mock('aws-sdk', () => ({
+  CloudFront: jest.fn(() => ({
+    createDistribution: mockCreateDistribution,
+    getDistributionConfig: mockGetDistributionConfig,
+    deleteDistribution: mockDeleteDistribution
+  }))
+}))
+
+module.exports = {
+  mockCreateDistribution,
+  mockGetDistributionConfig,
+  mockDeleteDistribution,
+  mockCreateDistributionPromise,
+  mockGetDistributionConfigPromise,
+  mockDeleteDistributionPromise
+}

jest.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  clearMocks: true
+}

package.json

@@ -6,7 +6,7 @@
     "access": "public"
   },
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
+    "test": "jest tests",
     "lint": "eslint . --fix --cache"
   },
   "author": "Serverless, Inc.",
@@ -22,6 +22,7 @@
     "eslint-config-prettier": "^3.6.0",
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-prettier": "^3.0.1",
+    "jest": "^24.9.0",
     "prettier": "^1.15.3"
   }
 }

tests/s3-origin.test.js

@@ -0,0 +1,50 @@
+const {
+  mockCreateDistribution,
+  mockCreateDistributionPromise,
+  mockGetDistributionConfigPromise
+} = require('aws-sdk')
+
+const CloudFrontComponent = require('../serverless')
+
+describe('S3 origin', () => {
+  let component
+
+  beforeEach(async () => {
+    component = new CloudFrontComponent()
+
+    mockGetDistributionConfigPromise.mockResolvedValueOnce({
+      ETag: 'etag'
+    })
+    mockCreateDistributionPromise.mockResolvedValueOnce({
+      Distribution: {
+        Id: 'xyz'
+      }
+    })
+
+    await component.init()
+    await component.default({
+      origins: ['https://mybucket.s3.amazonaws.com']
+    })
+  })
+
+  afterEach(async () => {
+    await component.remove()
+  })
+
+  it('creates CloudFront distribution with origin domain name "mybucket.s3.amazonaws.com"', () => {
+    expect(mockCreateDistribution).toBeCalledWith(
+      expect.objectContaining({
+        DistributionConfig: expect.objectContaining({
+          Origins: expect.objectContaining({
+            Items: [
+              expect.objectContaining({
+                Id: 'mybucket',
+                DomainName: 'mybucket.s3.amazonaws.com'
+              })
+            ]
+          })
+        })
+      })
+    )
+  })
+})

tests/simple-origin.test.js

@@ -0,0 +1,50 @@
+const {
+  mockCreateDistribution,
+  mockCreateDistributionPromise,
+  mockGetDistributionConfigPromise
+} = require('aws-sdk')
+
+const CloudFrontComponent = require('../serverless')
+
+describe('simple origin', () => {
+  let component
+
+  beforeEach(async () => {
+    component = new CloudFrontComponent()
+
+    mockGetDistributionConfigPromise.mockResolvedValueOnce({
+      ETag: 'etag'
+    })
+    mockCreateDistributionPromise.mockResolvedValueOnce({
+      Distribution: {
+        Id: 'xyz'
+      }
+    })
+
+    await component.init()
+    await component.default({
+      origins: ['https://exampleorigin.com']
+    })
+  })
+
+  afterEach(async () => {
+    await component.remove()
+  })
+
+  it(`creates CloudFront distribution with origin domain name "https://exampleorigin.com"`, () => {
+    expect(mockCreateDistribution).toBeCalledWith(
+      expect.objectContaining({
+        DistributionConfig: expect.objectContaining({
+          Origins: expect.objectContaining({
+            Items: [
+              expect.objectContaining({
+                Id: 'https://exampleorigin.com',
+                DomainName: 'https://exampleorigin.com'
+              })
+            ]
+          })
+        })
+      })
+    )
+  })
+})

utils.js

@@ -1,7 +1,7 @@
 const getOriginConfig = (origin) => {
   const originConfig = {
-    Id: '',
-    DomainName: '',
+    Id: origin,
+    DomainName: origin,
     CustomHeaders: {
       Quantity: 0,
       Items: []