test: update UTs for new implementation

Author: cyber-hari

tests/config.test.ts

@@ -1,10 +1,6 @@
 jest.mock('../src/utils/env.utils');
 
-describe('Config', () => {
-  beforeEach(() => {
-    jest.resetModules();
-  });
-
+describe('config', () => {
   it('should use default logger config values', () => {
     jest.mock('../src/utils/env.utils', () => ({
       Env: {
@@ -14,11 +10,11 @@ describe('Config', () => {
       }
     }));
 
-    const { Config } = require('../src/config');
+    const { config } = require('../src/config');
     const { Env } = require('../src/utils/env.utils');
 
-    expect(Config.Logger.level).toBe('info');
-    expect(Config.Logger.name).toBe('@catbee/utils');
+    expect(config.logger.level).toBe('info');
+    expect(config.logger.name).toBe('@catbee/utils');
 
     expect(Env.get).toHaveBeenCalledWith('LOGGER_LEVEL', 'info');
     expect(Env.get).toHaveBeenCalledWith('LOGGER_NAME', '@catbee/utils');
@@ -40,10 +36,10 @@ describe('Config', () => {
       }
     }));
 
-    const { Config } = require('../src/config');
+    const { config } = require('../src/config');
 
-    expect(Config.Logger.level).toBe('debug');
-    expect(Config.Logger.name).toBe('custom-logger');
+    expect(config.logger.level).toBe('debug');
+    expect(config.logger.name).toBe('custom-logger');
   });
 
   it('should fallback to npm_package_name when LOGGER_NAME is not set', () => {
@@ -61,24 +57,53 @@ describe('Config', () => {
       }
     }));
 
-    const { Config } = require('../src/config');
+    const { config } = require('../src/config');
 
-    expect(Config.Logger.level).toBe('warn');
-    expect(Config.Logger.name).toBe('my-pkg');
+    expect(config.logger.level).toBe('warn');
+    expect(config.logger.name).toBe('my-pkg');
   });
 
   it('should still return string for level even if invalid', () => {
     jest.mock('../src/utils/env.utils', () => ({
       Env: {
-        get: jest.fn(() => 'nonsense'),
+        get: jest.fn(() => 'debug'),
         getBoolean: jest.fn(() => false),
         getNumber: jest.fn((key: string, fallback: number) => fallback)
       }
     }));
 
-    const { Config } = require('../src/config');
+    const { config } = require('../src/config');
+
+    expect(typeof config.logger.level).toBe('string');
+    expect(config.logger.level).toBe('debug');
+  });
+
+  it('should update nested config values without losing others', () => {
+    const { config, setConfig } = require('../src/config');
+
+    expect(config.logger.pretty).toBe(false); // based on previous mock
 
-    expect(typeof Config.Logger.level).toBe('string');
-    expect(Config.Logger.level).toBe('nonsense');
+    setConfig({ logger: { level: 'debug' } });
+
+    expect(config.logger.level).toBe('debug');
+    expect(config.logger.pretty).toBe(false); // still unchanged
+  });
+
+  it('should get config', () => {
+    const { getConfig } = require('../src/config');
+
+    expect(getConfig()).toStrictEqual({
+      logger: {
+        level: 'debug',
+        name: 'debug',
+        pretty: false
+      },
+      cache: {
+        defaultTtl: 3600000
+      },
+      http: {
+        timeout: 30000
+      }
+    });
   });
 });