Implement e2e tests

test/e2etest.js

@@ -0,0 +1,66 @@
+const express = require("express");
+const app = express();
+const http = require("http");
+const puppeteer = require("puppeteer");
+const { fingerDown } = require("./finger.js");
+const { expect } = require("chai");
+
+async function staticWebServer(path) {
+  // Start a static web server
+  const app = express();
+  app.use(express.static(path));
+  // Port 0 means let the OS select a port
+  const server = http.createServer(app).listen(0, "localhost");
+  await new Promise(resolve => server.on("listening", resolve));
+
+  // Read back the bound address
+  const address = server.address();
+  return { server, address };
+}
+
+describe("some e2e test", function() {
+  before(async function() {
+    // Start webserver
+    const { address, server } = await staticWebServer(".");
+    this.address = `http://${address.address}:${address.port}`;
+    this.server = server;
+
+    // Start browser
+    this.browser = await puppeteer.launch();
+    this.page = await this.browser.newPage();
+    await this.page.goto(`${this.address}/test/sample.html`, {
+      waitUntil: "networkidle2"
+    });
+  });
+
+  it("can tap", async function() {
+    const btn = await this.page.$("button");
+    await btn.tap();
+    const result = await this.page.evaluate(_ => {
+      return window.lol;
+    });
+    expect(result).to.equal(true);
+  });
+
+  it("can tap manually", async function() {
+    const btn = await this.page.$("button");
+    const box = await btn.boundingBox();
+    const finger = fingerDown(
+      this.page,
+      box.x + box.width / 2,
+      box.y + box.height / 2
+    );
+    finger.up();
+    const result = await this.page.evaluate(_ => {
+      return window.lol;
+    });
+    expect(result).to.equal(true);
+  });
+
+  it("does some taps", async function() {});
+
+  after(async function() {
+    this.server.close();
+    await this.browser.close();
+  });
+});