test(installer): add test coverage for the installer

Author: MarshallOfSound

package.json

@@ -39,6 +39,8 @@
     "babel-plugin-transform-runtime": "^6.15.0",
     "babel-preset-es2015": "^6.16.0",
     "chai": "^3.5.0",
+    "chai-as-promised": "^6.0.0",
+    "chai-fetch-mock": "^1.0.0",
     "commitizen": "^2.8.6",
     "coveralls": "^2.11.15",
     "cross-env": "^3.1.3",
@@ -48,6 +50,7 @@
     "eslint": "^3.7.1",
     "eslint-config-airbnb-base": "^8.0.0",
     "eslint-plugin-import": "^1.16.0",
+    "fetch-mock": "^5.8.1",
     "generate-changelog": "^1.0.2",
     "gulp": "^3.9.1",
     "gulp-babel": "^6.1.2",

src/api/install.js

@@ -4,7 +4,6 @@ import fetch from 'node-fetch';
 import fs from 'fs-promise';
 import inquirer from 'inquirer';
 import nugget from 'nugget';
-import opn from 'opn';
 import os from 'os';
 import path from 'path';
 import pify from 'pify';
@@ -16,6 +15,7 @@ import darwinDMGInstaller from '../installers/darwin/dmg';
 import darwinZipInstaller from '../installers/darwin/zip';
 import linuxDebInstaller from '../installers/linux/deb';
 import linuxRPMInstaller from '../installers/linux/rpm';
+import win32ExeInstaller from '../installers/win32/exe';
 
 const d = debug('electron-forge:install');
 
@@ -144,7 +144,7 @@ export default async (providedOptions = {}) => {
   await asyncOra('Installing Application', async (installSpinner) => {
     const installActions = {
       win32: {
-        '.exe': async filePath => await opn(filePath, { wait: false }),
+        '.exe': win32ExeInstaller,
       },
       darwin: {
         '.zip': darwinZipInstaller,

src/installers/win32/exe.js

@@ -0,0 +1,3 @@
+import opn from 'opn';
+
+export default async filePath => await opn(filePath, { wait: false });

test/slow/install_spec_slow.js

@@ -0,0 +1,192 @@
+import chai, { expect } from 'chai';
+import fetchMock from 'fetch-mock';
+import chaiFetchMock from 'chai-fetch-mock';
+import chaiAsPromised from 'chai-as-promised';
+import proxyquire from 'proxyquire';
+import sinon from 'sinon';
+
+chai.use(chaiFetchMock);
+chai.use(chaiAsPromised);
+
+describe('install', () => {
+  let install;
+  let nuggetSpy;
+  let mockInquirer;
+  const mockInstaller = () => Promise.resolve();
+
+  beforeEach(() => {
+    nuggetSpy = sinon.stub();
+    mockInquirer = {
+      createPromptModule: sinon.spy(() => sinon.spy(() => Promise.resolve({ assetID: 1 }))),
+    };
+
+    install = proxyquire.noCallThru().load('../../src/api/install', {
+      'node-fetch': fetchMock.fetchMock,
+      nugget: (...args) => {
+        nuggetSpy(...args);
+        args[args.length - 1]();
+      },
+      '../installers/darwin/dmg': mockInstaller,
+      '../installers/darwin/zip': mockInstaller,
+      '../installers/linux/deb': mockInstaller,
+      '../installers/linux/rpm': mockInstaller,
+      '../installers/win32/exe': mockInstaller,
+      inquirer: mockInquirer,
+    }).default;
+  });
+
+  afterEach(() => {
+    fetchMock.restore();
+  });
+
+  it('should throw an error when a repo name is not given', async () => {
+    await expect(install()).to.eventually.be.rejected;
+  });
+
+  it('should throw an error when given an invalid repository name', async () => {
+    await expect(install({ repo: 'foobar', interactive: false })).to.eventually.be.rejected;
+  });
+
+  it('should throw an error if the fetch fails', async () => {
+    fetchMock.get('*', {
+      throws: new Error('it broke'),
+    });
+    await expect(install({ repo: 'a/b', interactive: false })).to.eventually.be.rejectedWith(
+      'Failed to find releases for repository "a/b".  Please check the name and try again.'
+    );
+  });
+
+  it('should throw an error if we can\'t find the repo', async () => {
+    fetchMock.get('*', {
+      message: 'Not Found',
+    });
+    await expect(install({ repo: 'b/c', interactive: false })).to.eventually.be.rejectedWith(
+      'Failed to find releases for repository "b/c".  Please check the name and try again.'
+    );
+  });
+
+  it('should throw an error if the API does not return a release array', async () => {
+    fetchMock.get('*', {
+      lolz: 'this aint no array',
+    });
+    await expect(install({ repo: 'c/d', interactive: false })).to.eventually.be.rejectedWith(
+      'Failed to find releases for repository "c/d".  Please check the name and try again.'
+    );
+  });
+
+  it('should throw an error if the latest release has no assets', async () => {
+    fetchMock.get('*', [
+      { tag_name: 'v1.0.0' },
+      { tag_name: '0.3.0' },
+      { tag_name: 'v1.2.0' },
+      { tag_name: '0.1.0' },
+    ]);
+    await expect(install({ repo: 'e/f', interactive: false })).to.eventually.be.rejectedWith(
+      'Could not find any assets for the latest release'
+    );
+  });
+
+  it('should throw an error if there are no release compatable with the current platform', async () => {
+    fetchMock.get('*', [
+      {
+        tag_name: '1.0.0',
+        assets: [
+          {
+            name: 'installer.unicorn',
+          },
+        ],
+      },
+    ]);
+    await expect(install({ repo: 'f/g', interactive: false })).to.eventually.be.rejectedWith(
+      `Failed to find any installable assets for target platform: ${`${process.platform}`.cyan}`
+    );
+  });
+
+  // eslint-disable-next-line no-nested-ternary
+  const compatSuffix = process.platform === 'darwin' ? 'dmg' : (process.platform === 'win32' ? 'exe' : 'deb');
+
+  it('should download a release if there is a single compatable asset', async () => {
+    fetchMock.get('*', [
+      {
+        tag_name: '1.0.0',
+        assets: [
+          {
+            name: `installer.${compatSuffix}`,
+            browser_download_url: 'fetch.it',
+          },
+        ],
+      },
+    ]);
+    expect(nuggetSpy.callCount).to.equal(0);
+    await install({ repo: 'g/h', interactive: false });
+    expect(nuggetSpy.callCount).to.equal(1);
+    expect(nuggetSpy.firstCall.args[0]).to.equal('fetch.it');
+  });
+
+  it('should throw an error if there is more than compatable asset with no chooseAsset method', async () => {
+    fetchMock.get('*', [
+      {
+        tag_name: '1.0.0',
+        assets: [
+          {
+            name: `installer.${compatSuffix}`,
+            browser_download_url: 'fetch.it',
+          },
+          {
+            name: `installer2.${compatSuffix}`,
+            browser_download_url: 'fetch.it.2',
+          },
+        ],
+      },
+    ]);
+    await expect(install({ repo: 'h/i', interactive: false })).to.eventually.be.rejectedWith(
+      'expected a chooseAsset function to be provided but it was not'
+    );
+  });
+
+  it('should provide compatable assets to chooseAsset if more than one exists', async () => {
+    const chooseAsset = sinon.spy(async assets => assets[0]);
+    fetchMock.get('*', [
+      {
+        tag_name: '1.0.0',
+        assets: [
+          {
+            name: `installer.${compatSuffix}`,
+            browser_download_url: 'fetch.it',
+          },
+          {
+            name: `installer2.${compatSuffix}`,
+            browser_download_url: 'fetch.it.2',
+          },
+        ],
+      },
+    ]);
+    expect(chooseAsset.callCount).to.equal(0);
+    await install({ repo: 'i/j', interactive: false, chooseAsset });
+    expect(chooseAsset.callCount).to.equal(1);
+    expect(chooseAsset.firstCall.args[0].length).to.equal(2);
+  });
+
+  it('should prompt the user to choose an asset if in interactive mode and more than one exists', async () => {
+// mockInquirer
+    fetchMock.get('*', [
+      {
+        tag_name: '1.0.0',
+        assets: [
+          {
+            id: 1,
+            name: `installer.${compatSuffix}`,
+            browser_download_url: 'fetch.it',
+          },
+          {
+            name: `installer2.${compatSuffix}`,
+            browser_download_url: 'fetch.it.2',
+          },
+        ],
+      },
+    ]);
+    expect(mockInquirer.createPromptModule.callCount).to.equal(0);
+    await install({ repo: 'j/k', interactive: true });
+    expect(mockInquirer.createPromptModule.callCount).to.equal(1);
+  });
+});