1 files changed, 81 insertions, 0 deletions
diff --git a/dom/ipc/tests/JSWindowActor/browser_uri_combination.js b/dom/ipc/tests/JSWindowActor/browser_uri_combination.js
new file mode 100644
index 0000000000..ce46a3e3b6
--- /dev/null
+++ b/dom/ipc/tests/JSWindowActor/browser_uri_combination.js
@@ -0,0 +1,81 @@
+add_task(function specify_both() {
+  // Specifying both should throw.
+
+  SimpleTest.doesThrow(() => {
+    ChromeUtils.registerWindowActor("TestWindow", {
+      parent: {
+        moduleURI: "resource://testing-common/TestWindowParent.jsm",
+      },
+      child: {
+        moduleURI: "resource://testing-common/TestWindowChild.jsm",
+        esModuleURI: "resource://testing-common/TestWindowChild.sys.mjs",
+      },
+    });
+  }, "Should throw if both moduleURI and esModuleURI are specified.");
+
+  SimpleTest.doesThrow(() => {
+    ChromeUtils.registerWindowActor("TestWindow", {
+      parent: {
+        esModuleURI: "resource://testing-common/TestWindowParent.sys.mjs",
+      },
+      child: {
+        moduleURI: "resource://testing-common/TestWindowChild.jsm",
+        esModuleURI: "resource://testing-common/TestWindowChild.sys.mjs",
+      },
+    });
+  }, "Should throw if both moduleURI and esModuleURI are specified.");
+
+  SimpleTest.doesThrow(() => {
+    ChromeUtils.registerWindowActor("TestWindow", {
+      parent: {
+        moduleURI: "resource://testing-common/TestWindowParent.jsm",
+        esModuleURI: "resource://testing-common/TestWindowParent.sys.mjs",
+      },
+      child: {
+        moduleURI: "resource://testing-common/TestWindowChild.jsm",
+      },
+    });
+  }, "Should throw if both moduleURI and esModuleURI are specified.");
+
+  SimpleTest.doesThrow(() => {
+    ChromeUtils.registerWindowActor("TestWindow", {
+      parent: {
+        moduleURI: "resource://testing-common/TestWindowParent.jsm",
+        esModuleURI: "resource://testing-common/TestWindowParent.sys.mjs",
+      },
+      child: {
+        esModuleURI: "resource://testing-common/TestWindowChild.sys.mjs",
+      },
+    });
+  }, "Should throw if both moduleURI and esModuleURI are specified.");
+});
+
+add_task(function specify_mixed() {
+  // Mixing JSM and ESM should work.
+
+  try {
+    ChromeUtils.registerWindowActor("TestWindow", {
+      parent: {
+        moduleURI: "resource://testing-common/TestWindowParent.jsm",
+      },
+      child: {
+        esModuleURI: "resource://testing-common/TestWindowChild.sys.mjs",
+      },
+    });
+  } finally {
+    ChromeUtils.unregisterWindowActor("TestWindow");
+  }
+
+  try {
+    ChromeUtils.registerWindowActor("TestWindow", {
+      parent: {
+        esModuleURI: "resource://testing-common/TestWindowParent.sys.mjs",
+      },
+      child: {
+        moduleURI: "resource://testing-common/TestWindowChild.jsm",
+      },
+    });
+  } finally {
+    ChromeUtils.unregisterWindowActor("TestWindow");
+  }
+});