tests

apps/api/src/domain/admin/presenters/DashboardStatsPresenter.test.ts

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+import { DashboardStatsPresenter } from './DashboardStatsPresenter';
+
+describe('DashboardStatsPresenter', () => {
+  let presenter: DashboardStatsPresenter;
+
+  beforeEach(() => {
+    presenter = new DashboardStatsPresenter();
+  });
+
+  describe('present', () => {
+    it('should map result to response model', () => {
+      const result = {
+        totalUsers: 100,
+        activeUsers: 80,
+        suspendedUsers: 10,
+        deletedUsers: 10,
+        systemAdmins: 5,
+        recentLogins: 20,
+        newUsersToday: 5,
+        userGrowth: [
+          { label: 'Day 1', value: 10, color: '#000' },
+          { label: 'Day 2', value: 15, color: '#000' },
+        ],
+        roleDistribution: [
+          { label: 'Admin', value: 5, color: '#000' },
+          { label: 'User', value: 95, color: '#000' },
+        ],
+        statusDistribution: {
+          active: 80,
+          suspended: 10,
+          deleted: 10,
+        },
+        activityTimeline: [
+          { date: '2024-01-01', newUsers: 5, logins: 20 },
+        ],
+      };
+
+      presenter.present(result);
+
+      expect(presenter.responseModel).toEqual({
+        totalUsers: 100,
+        activeUsers: 80,
+        suspendedUsers: 10,
+        deletedUsers: 10,
+        systemAdmins: 5,
+        recentLogins: 20,
+        newUsersToday: 5,
+        userGrowth: [
+          { label: 'Day 1', value: 10, color: '#000' },
+          { label: 'Day 2', value: 15, color: '#000' },
+        ],
+        roleDistribution: [
+          { label: 'Admin', value: 5, color: '#000' },
+          { label: 'User', value: 95, color: '#000' },
+        ],
+        statusDistribution: {
+          active: 80,
+          suspended: 10,
+          deleted: 10,
+        },
+        activityTimeline: [
+          { date: '2024-01-01', newUsers: 5, logins: 20 },
+        ],
+      });
+    });
+
+    it('should handle empty arrays', () => {
+      const result = {
+        totalUsers: 0,
+        activeUsers: 0,
+        suspendedUsers: 0,
+        deletedUsers: 0,
+        systemAdmins: 0,
+        recentLogins: 0,
+        newUsersToday: 0,
+        userGrowth: [],
+        roleDistribution: [],
+        statusDistribution: {
+          active: 0,
+          suspended: 0,
+          deleted: 0,
+        },
+        activityTimeline: [],
+      };
+
+      presenter.present(result);
+
+      expect(presenter.responseModel.userGrowth).toEqual([]);
+      expect(presenter.responseModel.roleDistribution).toEqual([]);
+      expect(presenter.responseModel.activityTimeline).toEqual([]);
+    });
+  });
+
+  describe('reset', () => {
+    it('should clear the response model', () => {
+      const result = {
+        totalUsers: 100,
+        activeUsers: 80,
+        suspendedUsers: 10,
+        deletedUsers: 10,
+        systemAdmins: 5,
+        recentLogins: 20,
+        newUsersToday: 5,
+        userGrowth: [],
+        roleDistribution: [],
+        statusDistribution: {
+          active: 80,
+          suspended: 10,
+          deleted: 10,
+        },
+        activityTimeline: [],
+      };
+
+      presenter.present(result);
+      expect(presenter.responseModel).toBeDefined();
+
+      presenter.reset();
+      expect(() => presenter.responseModel).toThrow('No response model available. Call present() first.');
+    });
+  });
+
+  describe('responseModel', () => {
+    it('should throw error when accessed before present()', () => {
+      expect(() => presenter.responseModel).toThrow('No response model available. Call present() first.');
+    });
+  });
+});