init

tests/unit/auth.test.ts

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+/**
+ * Authentication unit tests
+ */
+
+import { describe, it, expect } from 'vitest';
+import { generateAuthorization } from '../../src/auth';
+
+describe('generateAuthorization', () => {
+  const apiKey = 'sandbox-api-key';
+  const secretKey = 'sandbox-secret-key';
+  const uriPath = '/payment/bin/check';
+
+  it('should generate authorization header with request body', () => {
+    const requestBody = { binNumber: '589004', locale: 'tr' };
+    const result = generateAuthorization(apiKey, secretKey, uriPath, requestBody);
+
+    expect(result.authorization).toMatch(/^IYZWSv2 /);
+    expect(result.randomKey).toBeTruthy();
+    expect(result.randomKey.length).toBeGreaterThan(0);
+  });
+
+  it('should generate authorization header without request body', () => {
+    const result = generateAuthorization(apiKey, secretKey, uriPath);
+
+    expect(result.authorization).toMatch(/^IYZWSv2 /);
+    expect(result.randomKey).toBeTruthy();
+  });
+
+  it('should generate different random keys for each call', () => {
+    const result1 = generateAuthorization(apiKey, secretKey, uriPath);
+    const result2 = generateAuthorization(apiKey, secretKey, uriPath);
+
+    expect(result1.randomKey).not.toBe(result2.randomKey);
+  });
+
+  it('should use provided random key when given', () => {
+    const customRandomKey = '123456789';
+    const result = generateAuthorization(apiKey, secretKey, uriPath, undefined, customRandomKey);
+
+    expect(result.randomKey).toBe(customRandomKey);
+  });
+
+  it('should generate valid base64 encoded authorization', () => {
+    const result = generateAuthorization(apiKey, secretKey, uriPath);
+    const base64Part = result.authorization.replace('IYZWSv2 ', '');
+
+    // Base64 should be valid (only contains A-Z, a-z, 0-9, +, /, =)
+    expect(base64Part).toMatch(/^[A-Za-z0-9+/=]+$/);
+  });
+
+  it('should include apiKey, randomKey, and signature in authorization string', () => {
+    const customRandomKey = '123456789';
+    const result = generateAuthorization(apiKey, secretKey, uriPath, undefined, customRandomKey);
+    const base64Part = result.authorization.replace('IYZWSv2 ', '');
+    const decoded = Buffer.from(base64Part, 'base64').toString('utf-8');
+
+    expect(decoded).toContain(`apiKey:${apiKey}`);
+    expect(decoded).toContain(`randomKey:${customRandomKey}`);
+    expect(decoded).toContain('signature:');
+  });
+});
+