Implement e2e tests

test/finger.js

@@ -0,0 +1,61 @@
+let touchPoints = [];
+let idCnt = 0;
+
+class Finger {
+  constructor(point, page) {
+    this._point = point;
+    this._page = page;
+  }
+
+  move(x, y) {
+    if (!this._point) return;
+    Object.assign(this._point, {
+      x: Math.floor(x),
+      y: Math.floor(y)
+    });
+    this._page.touchscreen._client.send("Input.dispatchTouchEvent", {
+      type: "touchMove",
+      touchPoints,
+      modifiers: page._keyboard._modifiers
+    });
+  }
+
+  up() {
+    if (!this._point) return;
+    const idx = touchPoints.indexOf(this._point);
+    touchPoints = touchPoints.splice(idx, 1);
+    this._point = null;
+    if (touchPoints.length === 0) {
+      this._page.touchscreen._client.send("Input.dispatchTouchEvent", {
+        type: "touchEnd",
+        modifiers: this._page._keyboard._modifiers
+      });
+    } else {
+      this._page.touchscreen._client.send("Input.dispatchTouchEvent", {
+        type: "touchMove",
+        touchPoints,
+        modifiers: this._page._keyboard._modifiers
+      });
+    }
+  }
+}
+
+function fingerDown(page, x, y) {
+  const id = idCnt++;
+  const point = {
+    x: Math.round(x),
+    y: Math.round(y),
+    id
+  };
+  touchPoints.push(point);
+  page.touchscreen._client.send("Input.dispatchTouchEvent", {
+    type: "touchStart",
+    touchPoints,
+    modifiers: page._keyboard._modifiers
+  });
+  return new Finger(point, page);
+}
+
+module.exports = {
+  fingerDown
+};