Implement voice broadcast device selection (#9572)

test/components/structures/ContextMenu-test.ts

@@ -0,0 +1,88 @@
+/*
+Copyright 2022 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import { toLeftOf, toLeftOrRightOf, toRightOf } from "../../../src/components/structures/ContextMenu";
+import UIStore from "../../../src/stores/UIStore";
+
+describe("ContextMenu", () => {
+    const rect = new DOMRect();
+    // @ts-ignore
+    rect.left = 23;
+    // @ts-ignore
+    rect.right = 46;
+    // @ts-ignore
+    rect.top = 42;
+    rect.width = 640;
+    rect.height = 480;
+
+    beforeEach(() => {
+        window.scrollX = 31;
+        window.scrollY = 41;
+        UIStore.instance.windowWidth = 1280;
+    });
+
+    describe("toLeftOf", () => {
+        it("should return the correct positioning", () => {
+            expect(toLeftOf(rect)).toEqual({
+                chevronOffset: 12,
+                right: 1285, // 1280 - 23 + 31 - 3
+                top: 303, // 42 + (480 / 2) + 41 - (12 + 8)
+            });
+        });
+    });
+
+    describe("toRightOf", () => {
+        it("should return the correct positioning", () => {
+            expect(toRightOf(rect)).toEqual({
+                chevronOffset: 12,
+                left: 80, // 46 + 31 + 3
+                top: 303, // 42 + (480 / 2) + 41 - (12 + 8)
+            });
+        });
+    });
+
+    describe("toLeftOrRightOf", () => {
+        describe("when there is more space to the right", () => {
+            // default case from test setup
+
+            it("should return a position to the right", () => {
+                expect(toLeftOrRightOf(rect)).toEqual({
+                    chevronOffset: 12,
+                    left: 80, // 46 + 31 + 3
+                    top: 303, // 42 + (480 / 2) + 41 - (12 + 8)
+                });
+            });
+        });
+
+        describe("when there is more space to the left", () => {
+            beforeEach(() => {
+                // @ts-ignore
+                rect.left = 500;
+                // @ts-ignore
+                rect.right = 1000;
+            });
+
+            it("should return a position to the left", () => {
+                expect(toLeftOrRightOf(rect)).toEqual({
+                    chevronOffset: 12,
+                    right: 808, // 1280 - 500 + 31 - 3
+                    top: 303, // 42 + (480 / 2) + 41 - (12 + 8)
+                });
+            });
+        });
+    });
+});
+