Add about command test

tests/commands/about.test.ts

@@ -0,0 +1,34 @@
+import { Message } from "discord.js";
+import { mock } from "jest-mock-extended";
+import About from "../../src/commands/about";
+import { ICommandContext } from "../../src/contracts/ICommandContext";
+import PublicEmbed from "../../src/helpers/embeds/PublicEmbed";
+
+describe('Constructor', () => {
+    test('Expect values set', () => {
+        const about = new About();
+
+        expect(about._category).toBe("General");
+    });
+});
+
+describe('Execute', () => {
+    test('Expect embed to be made and sent to the current channel', (done) => {
+        const message = mock<Message>();
+        message.channel.send = jest.fn().mockImplementation((embed: PublicEmbed) => {
+            expect(embed.title).toBe('About');
+            expect(embed.description).toBe('');
+
+            done();
+        });
+
+        const context: ICommandContext = {
+            name: "about",
+            args: [],
+            message: message
+        };
+
+        const about = new About();
+        about.execute(context);
+    });
+});