Integration test: tape + spectron hello world

test/index.js

@@ -0,0 +1,41 @@
+const test = require('tape')
+const fs = require('fs-extra')
+const path = require('path')
+const setup = require('./setup')
+
+console.log('Creating test dir: ' + setup.TEST_DATA_DIR)
+const DOWNLOAD_DIR = path.join(setup.TEST_DATA_DIR, 'Downloads')
+fs.mkdirpSync(DOWNLOAD_DIR)
+
+test.onFinish(function () {
+  console.log('Removing test dir...')
+  fs.removeSync(setup.TEST_DATA_DIR)
+})
+
+test('app runs', function (t) {
+  t.timeoutAfter(10e3)
+  const app = setup.createApp()
+  setup.waitForLoad(app, t)
+    .then(() => setup.wait())
+    .then(() => setup.screenshotCreateOrCompare(app, t, 'torrent-list-basic'))
+    .then(() => setup.endTest(app, t),
+          (err) => setup.endTest(app, t, err || 'error'))
+})
+
+test('show download path missing', function (t) {
+  fs.removeSync(DOWNLOAD_DIR)
+
+  t.timeoutAfter(10e3)
+  const app = setup.createApp()
+  setup.waitForLoad(app, t)
+    .then(() => app.client.getTitle())
+    .then((text) => console.log('Title ' + text))
+    .then(() => app.client.waitUntilTextExists('.torrent-list', 'Download path missing'))
+    .then((err) => t.notOk(err))
+    .then(() => app.client.click('a'))
+    .then(() => setup.wait())
+    .then(() => app.browserWindow.getTitle())
+    .then((windowTitle) => t.equal(windowTitle, 'Preferences'))
+    .then(() => setup.endTest(app, t),
+          (err) => setup.endTest(app, t, err || 'error'))
+})

test/setup.js

@@ -0,0 +1,69 @@
+const path = require('path')
+const Application = require('spectron').Application
+const fs = require('fs-extra')
+
+const TEST_DATA_DIR = path.join(__dirname, 'tempTestData')
+
+module.exports = {
+  TEST_DATA_DIR,
+  createApp,
+  endTest,
+  screenshotCreateOrCompare,
+  waitForLoad,
+  wait
+}
+
+// Runs WebTorrent Desktop.
+// Returns a promise that resolves to a Spectron Application once the app has loaded.
+// Takes a Tape test. Makes some basic assertions to verify that the app loaded correctly.
+function createApp (t) {
+  return new Application({
+    path: path.join(__dirname, '..', 'node_modules', '.bin',
+      'electron' + (process.platform === 'win32' ? '.cmd' : '')),
+    args: [path.join(__dirname, '..')],
+    env: {NODE_ENV: 'test'}
+  })
+}
+
+// Starts the app, waits for it to load, returns a promise
+function waitForLoad (app, t) {
+  return app.start().then(function () {
+    return app.client.windowByIndex(1)
+  }).then(function () {
+    return app.client.waitUntilWindowLoaded()
+  }).then(function () {
+    return app.webContents.getTitle()
+  }).then(function (title) {
+    t.equal(title, 'WebTorrent Desktop', 'app title')
+  })
+}
+
+function wait (ms) {
+  if (ms === undefined) ms = 500 // Default: wait long enough for the UI to update
+  return new Promise(function (resolve, reject) {
+    setTimeout(resolve, ms)
+  })
+}
+
+function endTest (app, t, err) {
+  return app.stop().then(function () {
+    t.end(err)
+  })
+}
+
+function screenshotCreateOrCompare (app, t, name) {
+  const ssPath = path.join(__dirname, 'screenshots', process.platform, name + '.png')
+  console.log('Capturing ' + ssPath)
+  fs.ensureFileSync(ssPath)
+  const ssBuf = fs.readFileSync(ssPath)
+  return app.browserWindow.capturePage().then(function (buffer) {
+    if (ssBuf.length === 0) {
+      console.log('Saving screenshot ' + ssPath)
+      fs.writeFileSync(ssPath, buffer)
+    } else if (Buffer.compare(buffer, ssBuf) !== 0) {
+      return Promise.reject('Screenshot didn\'t match: ' + ssPath)
+    } else {
+      return Promise.resolve()
+    }
+  })
+}