Add targetMember is not manageable test

tests/commands/timeout.test.ts

@@ -348,7 +348,48 @@ describe('execute', () => {
         expect(interaction.reply).toBeCalledWith('Fields are required.');
     });
 
-    test.todo('GIVEN targetMember IS NOT manageable by the bot, EXPECT insufficient permissions error');
+    test('GIVEN targetMember IS NOT manageable by the bot, EXPECT insufficient permissions error', async () => {
+        const command = new Timeout();
+
+        const interaction = {
+            reply: jest.fn(),
+            guild: mock<Guild>(),
+            guildId: 'guildId',
+            user: {
+                id: 'moderatorId',
+            },
+            options: {
+                get: jest.fn((value: string): CommandInteractionOption<CacheType> | null => {
+                    switch (value) {
+                        case 'target':
+                            return {
+                                user: {
+                                    id: 'userId',
+                                    tag: 'userTag',
+                                } as User,
+                                member: {
+                                    manageable: false,
+                                } as GuildMember
+                            } as CommandInteractionOption;
+                        case 'length':
+                            return {
+                                value: '1m',
+                            } as CommandInteractionOption;
+                        case 'reason':
+                            return {
+                                value: 'Test reason',
+                            } as CommandInteractionOption;
+                        default:
+                            return null;
+                    }
+                }),
+            }
+        } as unknown as CommandInteraction;
+
+        await command.execute(interaction);
+
+        expect(interaction.reply).toBeCalledWith('Insufficient bot permissions. Please contact a moderator.');
+    });
 
     // Reason variable
     test.todo('GIVEN reason IS NOT NULL, EXPECT to be ran with reason set');