1 files changed, 127 insertions, 0 deletions
diff --git a/browser/base/content/test/fullscreen/browser_fullscreen_warning.js b/browser/base/content/test/fullscreen/browser_fullscreen_warning.js
new file mode 100644
index 0000000000..210f65ee1c
--- /dev/null
+++ b/browser/base/content/test/fullscreen/browser_fullscreen_warning.js
@@ -0,0 +1,127 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+add_task(async function test_fullscreen_display_none() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["full-screen-api.enabled", true],
+      ["full-screen-api.allow-trusted-requests-only", false],
+    ],
+  });
+
+  await BrowserTestUtils.withNewTab(
+    {
+      gBrowser,
+      url: `data:text/html,
+      <html>
+        <head>
+          <meta charset="utf-8"/>
+          <title>Fullscreen Test</title>
+        </head>
+        <body id="body">
+        <iframe
+         src="https://example.org/browser/browser/base/content/test/fullscreen/fullscreen.html"
+         hidden
+         allowfullscreen></iframe>
+        </body>
+      </html>`,
+    },
+    async function(browser) {
+      let warning = document.getElementById("fullscreen-warning");
+      let warningShownPromise = BrowserTestUtils.waitForAttribute(
+        "onscreen",
+        warning,
+        "true"
+      );
+      // Enter fullscreen
+      await SpecialPowers.spawn(browser, [], async () => {
+        let frame = content.document.querySelector("iframe");
+        frame.focus();
+        await SpecialPowers.spawn(frame, [], () => {
+          content.document.getElementById("request").click();
+        });
+      });
+      await warningShownPromise;
+      ok(true, "Fullscreen warning shown");
+      // Exit fullscreen
+      let exitFullscreenPromise = BrowserTestUtils.waitForEvent(
+        document,
+        "fullscreenchange",
+        false,
+        () => !document.fullscreenElement
+      );
+      document.getElementById("fullscreen-exit-button").click();
+      await exitFullscreenPromise;
+    }
+  );
+});
+
+add_task(async function test_fullscreen_pointerlock_conflict() {
+  await SpecialPowers.pushPrefEnv({
+    set: [
+      ["full-screen-api.enabled", true],
+      ["full-screen-api.allow-trusted-requests-only", false],
+    ],
+  });
+
+  await BrowserTestUtils.withNewTab("https://example.com", async browser => {
+    let fsWarning = document.getElementById("fullscreen-warning");
+    let plWarning = document.getElementById("pointerlock-warning");
+
+    is(
+      fsWarning.getAttribute("onscreen"),
+      null,
+      "Should not show full screen warning initially."
+    );
+    is(
+      plWarning.getAttribute("onscreen"),
+      null,
+      "Should not show pointer lock warning initially."
+    );
+
+    let fsWarningShownPromise = BrowserTestUtils.waitForAttribute(
+      "onscreen",
+      fsWarning,
+      "true"
+    );
+
+    info("Entering full screen and pointer lock.");
+    await SpecialPowers.spawn(browser, [], async () => {
+      await content.document.body.requestFullscreen();
+      await content.document.body.requestPointerLock();
+    });
+
+    await fsWarningShownPromise;
+    is(
+      fsWarning.getAttribute("onscreen"),
+      "true",
+      "Should show full screen warning."
+    );
+    is(
+      plWarning.getAttribute("onscreen"),
+      null,
+      "Should not show pointer lock warning."
+    );
+
+    info("Exiting pointerlock");
+    await SpecialPowers.spawn(browser, [], async () => {
+      await content.document.exitPointerLock();
+    });
+
+    is(
+      fsWarning.getAttribute("onscreen"),
+      "true",
+      "Should still show full screen warning."
+    );
+    is(
+      plWarning.getAttribute("onscreen"),
+      null,
+      "Should not show pointer lock warning."
+    );
+
+    // Cleanup
+    await document.exitFullscreen();
+  });
+});