Initial project documentation and status

implementation/src/__tests__/mock-data-loader.test.ts

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+/**
+ * Tests for the mock data loader.
+ */
+
+import { loadTestDeviceData } from './mock-data-loader';
+
+describe('MockDataLoader', () => {
+  it('should load test device data from JSON file', () => {
+    const data = loadTestDeviceData();
+
+    expect(Array.isArray(data.devices)).toBe(true);
+    expect(Array.isArray(data.groups)).toBe(true);
+    expect(data.devices.length).toBeGreaterThan(0);
+    expect(data.groups.length).toBeGreaterThan(0);
+  });
+
+  it('should load valid device structures', () => {
+    const data = loadTestDeviceData();
+
+    for (const device of data.devices) {
+      expect(typeof device.id).toBe('string');
+      expect(typeof device.name).toBe('string');
+      expect(typeof device.groupId).toBe('string');
+      expect(typeof device.groupName).toBe('string');
+      expect(['online', 'offline', 'unknown']).toContain(device.status);
+    }
+  });
+
+  it('should load valid group structures', () => {
+    const data = loadTestDeviceData();
+
+    for (const group of data.groups) {
+      expect(typeof group.id).toBe('string');
+      expect(typeof group.name).toBe('string');
+      expect(typeof group.deviceCount).toBe('number');
+    }
+  });
+});