Add rules command tests

tests/_mocks/rules/rules.json

@@ -0,0 +1,13 @@
+[
+    {
+        "image": "IMAGEURL"
+    },
+    {
+        "title": "TITLE 1",
+        "description": [
+            "DESCRIPTION 1A",
+            "DESCRIPTION 1B"
+        ],
+        "footer": "FOOTER 1"
+    }
+]

tests/commands/rules.test.ts

@@ -0,0 +1,106 @@
+import { Message } from "discord.js";
+import Rules from "../../src/commands/rules";
+import { ICommandContext } from "../../src/contracts/ICommandContext";
+
+const oldCwd = process.cwd();
+
+beforeEach(() => {
+    process.env = {};
+});
+
+describe('Constructor', () => {
+    test('Expect properties to be set', () => {
+        process.env = {
+            ROLES_MODERATOR: "Moderator"
+        };
+
+        const rules = new Rules();
+
+        expect(rules._category).toBe("Admin");
+        expect(rules._roles.length).toBe(1);
+        expect(rules._roles[0]).toBe("Moderator");
+    });
+});
+
+describe('Execute', () => {
+    test('Given rules exist, expect rules to be sent to current channel', () => {
+        process.env = {
+            COMMANDS_RULES_FILE: 'rules/rules.json'
+        };
+
+        process.cwd = jest.fn()
+			.mockReturnValue(`${oldCwd}/tests/_mocks`);
+
+        const messageChannelSend = jest.fn();
+
+        const message = {
+            channel: {
+                send: messageChannelSend
+            }
+        } as unknown as Message;
+
+        const context: ICommandContext = {
+            name: 'rules',
+            args: [],
+            message: message
+        };
+
+        const rules = new Rules();
+
+        const result = rules.execute(context);
+
+        expect(messageChannelSend).toBeCalledTimes(2);
+        expect(result.embeds.length).toBe(2);
+
+        // Header Embed
+        const embedHeader = result.embeds[0];
+
+        expect(embedHeader.title).toBe("");
+        expect(embedHeader.description).toBe("");
+        expect(embedHeader.image?.url).toBe("IMAGEURL");
+        expect(embedHeader.footer?.text).toBe("");
+
+        // Main Embed
+        const embedMain = result.embeds[1];
+
+        expect(embedMain.title).toBe("TITLE 1");
+        expect(embedMain.description).toBe("DESCRIPTION 1A\nDESCRIPTION 1B");
+        expect(embedMain.image?.url).toBe("");
+        expect(embedMain.footer?.text).toBe("FOOTER 1");
+    });
+
+    test('Given rules file does not exist, expect does not exist error', () => {
+        process.env = {
+            COMMANDS_RULES_FILE: 'rules/none.json'
+        };
+
+        process.cwd = jest.fn()
+			.mockReturnValue(`${oldCwd}/tests/_mocks`);
+
+        const messageChannelSend = jest.fn();
+
+        const message = {
+            channel: {
+                send: messageChannelSend
+            }
+        } as unknown as Message;
+
+        const context: ICommandContext = {
+            name: 'rules',
+            args: [],
+            message: message
+        };
+
+        const rules = new Rules();
+
+        const result = rules.execute(context);
+
+        expect(messageChannelSend).toBeCalledTimes(1);
+        expect(result.embeds.length).toBe(1);
+        
+        // Error Embed
+        const errorEmbed = result.embeds[0];
+
+        expect(errorEmbed.description).toBe("Rules file doesn't exist");
+    });
+});