Integration tests using spectron (#410)

Signed-off-by: Jari Kolehmainen <jari.kolehmainen@gmail.com>

spec/integration/specs/app_spec.ts

@@ -0,0 +1,56 @@
+import { Application } from "spectron"
+import * as util from "../helpers/utils"
+import { spawnSync } from "child_process"
+import { stat } from "fs"
+
+jest.setTimeout(20000)
+
+describe("app start", () => {
+  let app: Application
+  const clickWhatsNew = async (app: Application) => {
+    await app.client.waitUntilTextExists("h1", "What's new")
+    await app.client.click("button.btn-primary")
+    await app.client.waitUntilTextExists("h1", "Welcome")
+  }
+
+  beforeEach(async () => {
+    app = util.setup()
+    await app.start()
+    const windowCount = await app.client.getWindowCount()
+    await app.client.windowByIndex(windowCount - 1)
+    await app.client.waitUntilWindowLoaded()
+  }, 20000)
+
+  it('shows "whats new"', async () => {
+    await clickWhatsNew(app)
+  })
+
+  it('allows to add a cluster', async () => {
+    const status = spawnSync("minikube status", {shell: true})
+    if (status.status !== 0) {
+      console.warn("minikube not running, skipping test")
+      return
+    }
+    await clickWhatsNew(app)
+    await app.client.click("a#add-cluster")
+    await app.client.waitUntilTextExists("legend", "Choose config:")
+    await app.client.selectByVisibleText("select#kubecontext-select", "minikube (new)")
+    await app.client.click("button.btn-primary")
+    await app.client.waitUntilTextExists("pre.auth-output", "Authentication proxy started")
+    let windowCount = await app.client.getWindowCount()
+    // wait for webview to appear on window count
+    while (windowCount == 1) {
+      windowCount = await app.client.getWindowCount()
+    }
+    await app.client.windowByIndex(windowCount - 1)
+    await app.client.waitUntilTextExists("span.link-text", "Cluster")
+    await app.client.click('a[href="/nodes"]')
+    await app.client.waitUntilTextExists("div.TableCell", "minikube")
+  })
+
+  afterEach(async () => {
+    if (app && app.isRunning()) {
+      return util.tearDown(app)
+    }
+  })
+})