Add IMPLOID ASCII art to CLI startup (Issue #5)

src/index.test.ts

@@ -0,0 +1,40 @@
+import { getImploidAsciiArt } from './utils/ascii-art';
+
+describe('CLI Application', () => {
+  describe('startup', () => {
+    let originalLog: typeof console.log;
+    let originalArgv: string[];
+    let consoleOutput: string[] = [];
+
+    beforeEach(() => {
+      originalLog = console.log;
+      originalArgv = process.argv;
+      process.argv = ['node', 'index.js', '--help'];
+      consoleOutput = [];
+      console.log = jest.fn((...args) => {
+        consoleOutput.push(args.map(arg => String(arg)).join(' '));
+      });
+    });
+
+    afterEach(() => {
+      console.log = originalLog;
+      process.argv = originalArgv;
+      jest.resetModules();
+    });
+
+    it('should display IMPLOID ASCII art on startup', () => {
+      const expectedArt = getImploidAsciiArt();
+
+      try {
+        jest.isolateModules(() => {
+          require('./index');
+        });
+      } catch (e) {
+        // The CLI will throw an exit error after displaying help, which is expected
+      }
+
+      expect(console.log).toHaveBeenCalled();
+      expect(consoleOutput[0]).toBe(expectedArt);
+    });
+  });
+});

src/index.ts

@@ -2,6 +2,9 @@
 
 import { Command } from 'commander';
 import { greet } from './commands/greet';
+import { getImploidAsciiArt } from './utils/ascii-art';
+
+console.log(getImploidAsciiArt());
 
 const program = new Command();
 

src/utils/ascii-art.test.ts

@@ -0,0 +1,38 @@
+import { getImploidAsciiArt } from './ascii-art';
+
+describe('ASCII Art', () => {
+  describe('getImploidAsciiArt', () => {
+    it('should return IMPLOID ASCII art as a string', () => {
+      const art = getImploidAsciiArt();
+      expect(typeof art).toBe('string');
+      expect(art).toBeTruthy();
+      expect(art.length).toBeGreaterThan(0);
+    });
+
+    it('should contain ASCII art representing IMPLOID', () => {
+      const art = getImploidAsciiArt();
+      // Check that the ASCII art contains typical ASCII art characters
+      expect(art).toContain('_');
+      expect(art).toContain('|');
+      expect(art).toContain('/');
+      expect(art).toContain('\\');
+      // Ensure it has the structure of ASCII art letters
+      expect(art).toMatch(/[_|/\\]+/);
+    });
+
+    it('should be properly formatted with multiple lines', () => {
+      const art = getImploidAsciiArt();
+      const lines = art.split('\n');
+      expect(lines.length).toBeGreaterThan(1);
+    });
+
+    it('should have consistent line lengths for proper display', () => {
+      const art = getImploidAsciiArt();
+      const lines = art.split('\n').filter(line => line.trim() !== '');
+
+      for (const line of lines) {
+        expect(line.length).toBeLessThanOrEqual(80);
+      }
+    });
+  });
+});

src/utils/ascii-art.ts

@@ -0,0 +1,10 @@
+export function getImploidAsciiArt(): string {
+  return `
+ _____ __  __ _____  _      ____ _____ _____  
+|_   _|  \\/  |  __ \\| |    / __ \\_   _|  __ \\ 
+  | | | \\  / | |__) | |   | |  | || | | |  | |
+  | | | |\\/| |  ___/| |   | |  | || | | |  | |
+ _| |_| |  | | |    | |___| |__| || |_| |__| |
+|_____|_|  |_|_|    |______\\____/_____|_____/ 
+`;
+}