1 files changed, 51 insertions, 0 deletions
diff --git a/browser/components/resistfingerprinting/test/browser/browser_roundedWindow_dialogWindow.js b/browser/components/resistfingerprinting/test/browser/browser_roundedWindow_dialogWindow.js
new file mode 100644
index 0000000000..96ad858fb3
--- /dev/null
+++ b/browser/components/resistfingerprinting/test/browser/browser_roundedWindow_dialogWindow.js
@@ -0,0 +1,51 @@
+/**
+ * Bug 1352305 - A test case for dialog windows that it should not be rounded
+ *   even after fingerprinting resistance is enabled.
+ */
+
+async function test_dialog_window() {
+  let diagWin;
+
+  await new Promise(resolve => {
+    // Open a dialog window which is not rounded size.
+    diagWin = window.openDialog(
+      "about:blank",
+      null,
+      "innerWidth=250,innerHeight=350"
+    );
+
+    diagWin.addEventListener(
+      "load",
+      function () {
+        resolve();
+      },
+      { once: true }
+    );
+  });
+
+  is(diagWin.innerWidth, 250, "The dialog window doesn't have a rounded size.");
+  is(
+    diagWin.innerHeight,
+    350,
+    "The dialog window doesn't have a rounded size."
+  );
+
+  await BrowserTestUtils.closeWindow(diagWin);
+}
+
+add_setup(async function () {
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.resistFingerprinting", true]],
+  });
+});
+
+add_task(test_dialog_window);
+
+add_task(async function test_dialog_window_without_resistFingerprinting() {
+  // Test dialog windows with 'privacy.resistFingerprinting' is false.
+  await SpecialPowers.pushPrefEnv({
+    set: [["privacy.resistFingerprinting", false]],
+  });
+
+  await test_dialog_window();
+});