Add verify and button tests

tests/client/interactionCreate/button.test.ts

@@ -1,7 +1,70 @@
+import Button from "../../../src/client/interactionCreate/button";
+import { CoreClient } from "../../../src/client/client";
+import ButtonEventItem from "../../../src/contracts/ButtonEventItem";
+import { ButtonInteraction } from "discord.js";
+import { ButtonEvent } from "../../../src/type/buttonEvent";
+
 describe('onButtonClicked', () => {
-    test.todo("EXPECT button event to be executed");
+    let item: ButtonEventItem;
+    let interaction: ButtonInteraction;
 
-    test.todo("GIVEN interaction is not a button, EXEPCT nothing to happen");
+    beforeEach(() => {
+        item = {
+            ButtonId: "buttonId",
+            Event: {
+                execute: jest.fn(),
+            } as unknown as ButtonEvent,
+        } as unknown as ButtonEventItem;
 
-    test.todo("GIVEN button event is not registered, EXPECT error");
+        interaction = {
+            reply: jest.fn(),
+            isButton: true,
+            customId: "buttonId test",
+        } as unknown as ButtonInteraction;
+
+        CoreClient.buttonEvents = [ item ];
+    });
+
+    test("EXPECT button event to be executed", async () => {
+        await Button.onButtonClicked(interaction);
+
+        expect(item.Event.execute).toHaveBeenCalledTimes(1);
+        expect(item.Event.execute).toHaveBeenCalledWith(interaction);
+
+        expect(interaction.reply).not.toHaveBeenCalled();
+    });
+
+    test("GIVEN interaction is not a button, EXEPCT nothing to happen", async () => {
+        interaction = {
+            reply: jest.fn(),
+            isButton: false,
+        } as unknown as ButtonInteraction;
+
+        await Button.onButtonClicked(interaction);
+
+        expect(item.Event.execute).not.toHaveBeenCalled();
+        expect(interaction.reply).not.toHaveBeenCalled();
+    });
+
+    test("GIVEN no button event is registered, EXPECT error", async () => {
+        CoreClient.buttonEvents = [];
+
+        await Button.onButtonClicked(interaction);
+
+        expect(interaction.reply).toHaveBeenCalledTimes(1);
+        expect(interaction.reply).toHaveBeenCalledWith("Event not found.");
+
+        expect(item.Event.execute).not.toHaveBeenCalled();
+    });
+
+    test("GIVEN button event is not registered, EXPECT error", async () => {
+        interaction.customId = "anotherButtonId test";
+
+        await Button.onButtonClicked(interaction);
+
+        expect(interaction.reply).toHaveBeenCalledTimes(1);
+        expect(interaction.reply).toHaveBeenCalledWith("Event not found.");
+
+        expect(item.Event.execute).not.toHaveBeenCalled();
+    });
 });