1 files changed, 31 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/tests/location.spec.js b/devtools/client/debugger/src/utils/tests/location.spec.js
new file mode 100644
index 0000000000..2be71f3cae
--- /dev/null
+++ b/devtools/client/debugger/src/utils/tests/location.spec.js
@@ -0,0 +1,31 @@
+/* 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 { sortSelectedLocations } from "../location";
+
+function loc(line, column) {
+  return {
+    location: { sourceId: "foo", line, column },
+    generatedLocation: { sourceId: "foo", line, column },
+  };
+}
+describe("location.spec.js", () => {
+  it("sorts lines", () => {
+    const a = loc(3, 5);
+    const b = loc(1, 10);
+    expect(sortSelectedLocations([a, b], { id: "foo" })).toEqual([b, a]);
+  });
+
+  it("sorts columns", () => {
+    const a = loc(3, 10);
+    const b = loc(3, 5);
+    expect(sortSelectedLocations([a, b], { id: "foo" })).toEqual([b, a]);
+  });
+
+  it("prioritizes undefined columns", () => {
+    const a = loc(3, 10);
+    const b = loc(3, undefined);
+    expect(sortSelectedLocations([a, b], { id: "foo" })).toEqual([b, a]);
+  });
+});