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DW-Agents/__tests__/unit/test-utils.test.ts

208 lines

/**
 * Unit Tests for Test Utilities
 * Tests for helper functions and utilities used across the test suite
 */

describe('Test Utilities', () => {

  describe('waitFor utility', () => {
    it('should wait for condition to become true', async () => {
      let counter = 0;
      const condition = () => {
        counter++;
        return counter >= 3;
      };

      await global.testUtils.waitFor(condition, 5000);

      expect(counter).toBeGreaterThanOrEqual(3);
    });

    it('should timeout if condition never becomes true', async () => {
      const condition = () => false;

      await expect(
        global.testUtils.waitFor(condition, 500)
      ).rejects.toThrow(/Timeout waiting for condition/);
    });

    it('should resolve immediately if condition is already true', async () => {
      const startTime = Date.now();
      await global.testUtils.waitFor(() => true, 5000);
      const duration = Date.now() - startTime;

      expect(duration).toBeLessThan(500);
    });

    it('should handle async conditions', async () => {
      let counter = 0;
      const asyncCondition = async () => {
        counter++;
        await new Promise(resolve => setTimeout(resolve, 50));
        return counter >= 2;
      };

      await global.testUtils.waitFor(asyncCondition, 5000);

      expect(counter).toBeGreaterThanOrEqual(2);
    });
  });

  describe('retry utility', () => {
    it('should succeed on first try if operation succeeds', async () => {
      let attempts = 0;
      const operation = async () => {
        attempts++;
        return 'success';
      };

      const result = await global.testUtils.retry(operation, 3, 100);

      expect(result).toBe('success');
      expect(attempts).toBe(1);
    });

    it('should retry on failure and eventually succeed', async () => {
      let attempts = 0;
      const operation = async () => {
        attempts++;
        if (attempts < 3) {
          throw new Error('Not yet');
        }
        return 'success';
      };

      const result = await global.testUtils.retry(operation, 5, 50);

      expect(result).toBe('success');
      expect(attempts).toBe(3);
    });

    it('should fail after max retries', async () => {
      const operation = async () => {
        throw new Error('Always fails');
      };

      await expect(
        global.testUtils.retry(operation, 3, 50)
      ).rejects.toThrow('Always fails');
    });

    it('should wait specified delay between retries', async () => {
      let attempts = 0;
      const timestamps: number[] = [];

      const operation = async () => {
        attempts++;
        timestamps.push(Date.now());
        if (attempts < 3) {
          throw new Error('Not yet');
        }
        return 'success';
      };

      await global.testUtils.retry(operation, 5, 200);

      // Check delays between attempts
      for (let i = 1; i < timestamps.length; i++) {
        const delay = timestamps[i] - timestamps[i - 1];
        expect(delay).toBeGreaterThanOrEqual(180); // Allow some variance
      }
    });
  });

  describe('Global test configuration', () => {
    it('should have baseURL configured', () => {
      expect(global.testConfig.baseURL).toBeDefined();
      expect(typeof global.testConfig.baseURL).toBe('string');
    });

    it('should have masterHubPort configured', () => {
      expect(global.testConfig.masterHubPort).toBeDefined();
      expect(typeof global.testConfig.masterHubPort).toBe('string');
    });

    it('should have testTimeout configured', () => {
      expect(global.testConfig.testTimeout).toBeDefined();
      expect(typeof global.testConfig.testTimeout).toBe('number');
      expect(global.testConfig.testTimeout).toBeGreaterThan(0);
    });
  });
});

describe('Environment Configuration', () => {

  it('should respect environment variables', () => {
    // Test that env vars are properly loaded
    expect(process.env.NODE_ENV).toBeDefined();
  });

  it('should use default values when env vars not set', () => {
    const baseURL = process.env.BASE_URL || 'http://localhost';
    expect(baseURL).toBeDefined();
    expect(typeof baseURL).toBe('string');
  });
});

describe('Mock and Stub Utilities', () => {

  describe('Jest mock functions', () => {
    it('should create and track mock function calls', () => {
      const mockFn = jest.fn();

      mockFn('arg1', 'arg2');
      mockFn('arg3');

      expect(mockFn).toHaveBeenCalledTimes(2);
      expect(mockFn).toHaveBeenCalledWith('arg1', 'arg2');
      expect(mockFn).toHaveBeenCalledWith('arg3');
    });

    it('should allow mock return values', () => {
      const mockFn = jest.fn()
        .mockReturnValueOnce('first')
        .mockReturnValueOnce('second')
        .mockReturnValue('default');

      expect(mockFn()).toBe('first');
      expect(mockFn()).toBe('second');
      expect(mockFn()).toBe('default');
      expect(mockFn()).toBe('default');
    });

    it('should allow mock implementations', () => {
      const mockFn = jest.fn((x: number) => x * 2);

      expect(mockFn(5)).toBe(10);
      expect(mockFn(10)).toBe(20);
    });

    it('should track call arguments', () => {
      const mockFn = jest.fn();

      mockFn('a', 1);
      mockFn('b', 2);

      expect(mockFn.mock.calls[0]).toEqual(['a', 1]);
      expect(mockFn.mock.calls[1]).toEqual(['b', 2]);
    });
  });

  describe('Async mock functions', () => {
    it('should handle async mock functions', async () => {
      const mockAsyncFn = jest.fn().mockResolvedValue('async result');

      const result = await mockAsyncFn();

      expect(result).toBe('async result');
      expect(mockAsyncFn).toHaveBeenCalled();
    });

    it('should handle rejected promises', async () => {
      const mockAsyncFn = jest.fn().mockRejectedValue(new Error('async error'));

      await expect(mockAsyncFn()).rejects.toThrow('async error');
    });
  });
});