1 files changed, 41 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/tests/DevToolsUtils.spec.js b/devtools/client/debugger/src/utils/tests/DevToolsUtils.spec.js
new file mode 100644
index 0000000000..be405d8628
--- /dev/null
+++ b/devtools/client/debugger/src/utils/tests/DevToolsUtils.spec.js
@@ -0,0 +1,41 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+import { reportException, executeSoon } from "../DevToolsUtils.js";
+
+describe("DevToolsUtils", () => {
+  describe("reportException", () => {
+    beforeEach(() => {
+      global.console = { error: jest.fn() };
+    });
+
+    it("calls console.error", () => {
+      reportException("caller", ["you broke it"]);
+      expect(console.error).toHaveBeenCalled();
+    });
+
+    it("returns a description of caller and exception text", () => {
+      const who = "who",
+        exception = "this is an error",
+        msgTxt = " threw an exception: ";
+
+      reportException(who, [exception]);
+
+      expect(console.error).toHaveBeenCalledWith(`${who}${msgTxt}`, [
+        exception,
+      ]);
+    });
+  });
+
+  describe("executeSoon", () => {
+    it("calls setTimeout with 0 ms", () => {
+      global.setTimeout = jest.fn();
+      const fnc = () => {};
+
+      executeSoon(fnc);
+
+      expect(setTimeout).toHaveBeenCalledWith(fnc, 0);
+    });
+  });
+});