Test Suite: Add unit tests for p5-sound-adapter

Author: omsuneri

js/__tests__/p5-sound-adapter.test.js

@@ -0,0 +1,118 @@
+/**
+ * @license
+ * MusicBlocks v3.4.1
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ */
+
+describe("p5-sound-adapter", () => {
+    let adapterFunction;
+
+    beforeEach(() => {
+        jest.resetModules();
+
+        global.define = jest.fn((deps, callback) => {
+            adapterFunction = callback;
+        });
+        window.OriginalAudioContext = "mock-original-audio";
+        window.AudioContext = "broken-audio";
+        window.OriginalWebkitAudioContext = "mock-original-webkit";
+        window.webkitAudioContext = "broken-webkit";
+        window.OriginalTone = "mock-original-tone";
+        window.Tone = "broken-tone";
+
+        window.AudioNode = {
+            prototype: {
+                connect: jest.fn().mockReturnValue(undefined)
+            }
+        };
+
+        jest.spyOn(console, "log").mockImplementation(() => {});
+        jest.spyOn(console, "warn").mockImplementation(() => {});
+    });
+
+    afterEach(() => {
+        delete global.define;
+        delete window.OriginalAudioContext;
+        delete window.AudioContext;
+        delete window.OriginalWebkitAudioContext;
+        delete window.webkitAudioContext;
+        delete window.OriginalTone;
+        delete window.Tone;
+        delete window.AudioNode;
+
+        jest.restoreAllMocks();
+    });
+
+    it("restores AudioContext, webkitAudioContext, and Tone", () => {
+        require("../p5-sound-adapter");
+        adapterFunction();
+        expect(window.AudioContext).toBe("mock-original-audio");
+        expect(window.webkitAudioContext).toBe("mock-original-webkit");
+        expect(window.Tone).toBe("mock-original-tone");
+    });
+    it("does not restore AudioContext if already correct", () => {
+        window.AudioContext = "mock-original-audio";
+
+        require("../p5-sound-adapter");
+        adapterFunction();
+
+        expect(window.AudioContext).toBe("mock-original-audio");
+    });
+    it("patches AudioNode.prototype.connect to return destination if undefined", () => {
+        require("../p5-sound-adapter");
+        adapterFunction();
+
+        const patchedConnect = window.AudioNode.prototype.connect;
+        expect(patchedConnect.isP5AdapterPatched).toBe(true);
+
+        const mockDestination = "destination-node";
+        const result = patchedConnect(mockDestination);
+
+        expect(result).toBe(mockDestination);
+    });
+    it("does nothing if AudioNode is missing", () => {
+        delete window.AudioNode;
+
+        require("../p5-sound-adapter");
+        adapterFunction();
+
+        expect(window.AudioNode).toBeUndefined();
+    });
+    it("returns original result from connect if it is NOT undefined", () => {
+        window.AudioNode.prototype.connect = jest.fn().mockReturnValue("valid-connection");
+
+        require("../p5-sound-adapter");
+        adapterFunction();
+
+        const patchedConnect = window.AudioNode.prototype.connect;
+        const result = patchedConnect("destination-node");
+
+        expect(result).toBe("valid-connection");
+    });
+
+    it("warns if OriginalTone is missing", () => {
+        window.OriginalTone = undefined;
+        require("../p5-sound-adapter");
+        adapterFunction();
+
+        expect(console.warn).toHaveBeenCalledWith("p5-sound-adapter: No OriginalTone to restore!");
+    });
+
+    it("does not double-patch AudioNode.prototype.connect", () => {
+        require("../p5-sound-adapter");
+
+        adapterFunction();
+        const patchedConnect = window.AudioNode.prototype.connect;
+
+        adapterFunction();
+
+        expect(window.AudioNode.prototype.connect).toBe(patchedConnect);
+        expect(console.log).toHaveBeenCalledWith(
+            "p5-sound-adapter: AudioNode.prototype.connect already patched"
+        );
+    });
+});