1 files changed, 83 insertions, 0 deletions
diff --git a/remote/cdp/test/browser/emulation/browser_setTouchEmulationEnabled.js b/remote/cdp/test/browser/emulation/browser_setTouchEmulationEnabled.js
new file mode 100644
index 0000000000..48315ed0e9
--- /dev/null
+++ b/remote/cdp/test/browser/emulation/browser_setTouchEmulationEnabled.js
@@ -0,0 +1,83 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const DOC_TOUCH = toDataURL("<div>Hello world");
+
+add_task(async function invalidEnabledType({ client }) {
+  const { Emulation } = client;
+
+  for (const enabled of [null, "", 1, [], {}]) {
+    let errorThrown = "";
+    try {
+      await Emulation.setTouchEmulationEnabled({ enabled });
+    } catch (e) {
+      errorThrown = e.message;
+    }
+    ok(
+      errorThrown.match(/enabled: boolean value expected/),
+      `Fails with invalid type: ${enabled}`
+    );
+  }
+});
+
+add_task(async function enableAndDisable({ client }) {
+  const { Emulation, Runtime } = client;
+  const url = toDataURL("<p>foo");
+
+  await enableRuntime(client);
+
+  let contextCreated = Runtime.executionContextCreated();
+  await loadURL(url);
+  let result = await contextCreated;
+  await assertTouchEnabled(client, result.context, false);
+
+  await Emulation.setTouchEmulationEnabled({ enabled: true });
+  contextCreated = Runtime.executionContextCreated();
+  await loadURL(url);
+  result = await contextCreated;
+  await assertTouchEnabled(client, result.context, true);
+
+  await Emulation.setTouchEmulationEnabled({ enabled: false });
+  contextCreated = Runtime.executionContextCreated();
+  await loadURL(url);
+  result = await contextCreated;
+  await assertTouchEnabled(client, result.context, false);
+});
+
+add_task(async function receiveTouchEventsWhenEnabled({ client }) {
+  const { Emulation, Runtime } = client;
+
+  await enableRuntime(client);
+
+  await Emulation.setTouchEmulationEnabled({ enabled: true });
+  const contextCreated = Runtime.executionContextCreated();
+  await loadURL(DOC_TOUCH);
+  const { context } = await contextCreated;
+
+  await assertTouchEnabled(client, context, true);
+
+  const { result } = await evaluate(client, context.id, () => {
+    return new Promise(resolve => {
+      window.ontouchstart = () => {
+        resolve(true);
+      };
+      window.dispatchEvent(new Event("touchstart"));
+      resolve(false);
+    });
+  });
+  is(result.value, true, "Received touch event");
+});
+
+async function assertTouchEnabled(client, context, expectedStatus) {
+  const { result } = await evaluate(client, context.id, () => {
+    return "ontouchstart" in window;
+  });
+
+  if (expectedStatus) {
+    ok(result.value, "Touch emulation enabled");
+  } else {
+    ok(!result.value, "Touch emulation disabled");
+  }
+}