Merge branch 'fix/crypto-compatibility'

tests/crypto-adapter.test.ts

@@ -0,0 +1,166 @@
+import { getCryptoRandomValues } from '../src/utils/crypto-adapter';
+
+describe('crypto-adapter', () => {
+	describe('getCryptoRandomValues', () => {
+		it('should use window.crypto in browser environment', () => {
+			// Save reference to global
+			const globalRef = global as any;
+			const originalWindow = globalRef.window;
+
+			try {
+				// Mock browser environment with window.crypto
+				const mockGetRandomValues = jest.fn((array: any) => {
+					// Fill with mock random values
+					for (let i = 0; i < array.length; i++) {
+						array[i] = Math.floor(Math.random() * 256);
+					}
+					return array;
+				});
+
+				globalRef.window = {
+					crypto: {
+						getRandomValues: mockGetRandomValues
+					}
+				};
+
+				// Clear module cache to force re-evaluation
+				jest.resetModules();
+
+				// Re-import the function
+				const { getCryptoRandomValues: reloadedGetCryptoRandomValues } = require('../src/utils/crypto-adapter');
+
+				// Should use window.crypto
+				const array = new Uint8Array(32);
+				const result = reloadedGetCryptoRandomValues(array);
+
+				expect(result).toBe(array);
+				expect(mockGetRandomValues).toHaveBeenCalledWith(array);
+			} finally {
+				// Restore original window
+				globalRef.window = originalWindow;
+
+				// Clear module cache again to restore normal state
+				jest.resetModules();
+			}
+		});
+
+		it('should fill Uint8Array with random values', () => {
+			const array = new Uint8Array(32);
+			const result = getCryptoRandomValues(array);
+
+			expect(result).toBe(array);
+			expect(result.length).toBe(32);
+			// Verify not all zeros (extremely unlikely with true random)
+			const hasNonZero = Array.from(result).some(val => val !== 0);
+			expect(hasNonZero).toBe(true);
+		});
+
+		it('should produce different values on subsequent calls', () => {
+			const array1 = new Uint8Array(32);
+			const array2 = new Uint8Array(32);
+
+			getCryptoRandomValues(array1);
+			getCryptoRandomValues(array2);
+
+			// Arrays should be different (extremely unlikely to be identical)
+			const identical = Array.from(array1).every((val, idx) => val === array2[idx]);
+			expect(identical).toBe(false);
+		});
+
+		it('should preserve array type', () => {
+			const uint8 = new Uint8Array(16);
+			const uint16 = new Uint16Array(8);
+			const uint32 = new Uint32Array(4);
+
+			const result8 = getCryptoRandomValues(uint8);
+			const result16 = getCryptoRandomValues(uint16);
+			const result32 = getCryptoRandomValues(uint32);
+
+			expect(result8).toBeInstanceOf(Uint8Array);
+			expect(result16).toBeInstanceOf(Uint16Array);
+			expect(result32).toBeInstanceOf(Uint32Array);
+		});
+
+		it('should work with different array lengths', () => {
+			const small = new Uint8Array(8);
+			const medium = new Uint8Array(32);
+			const large = new Uint8Array(128);
+
+			getCryptoRandomValues(small);
+			getCryptoRandomValues(medium);
+			getCryptoRandomValues(large);
+
+			expect(small.every(val => val >= 0 && val <= 255)).toBe(true);
+			expect(medium.every(val => val >= 0 && val <= 255)).toBe(true);
+			expect(large.every(val => val >= 0 && val <= 255)).toBe(true);
+		});
+
+		it('should use Node.js crypto.webcrypto when window.crypto is not available', () => {
+			// Save references to global object and original values
+			const globalRef = global as any;
+			const originalWindow = globalRef.window;
+			const originalCrypto = originalWindow?.crypto;
+
+			try {
+				// Mock window without crypto to force Node.js crypto path
+				globalRef.window = { ...originalWindow };
+				delete globalRef.window.crypto;
+
+				// Clear module cache to force re-evaluation
+				jest.resetModules();
+
+				// Re-import the function
+				const { getCryptoRandomValues: reloadedGetCryptoRandomValues } = require('../src/utils/crypto-adapter');
+
+				// Should work using Node.js crypto.webcrypto
+				const array = new Uint8Array(32);
+				const result = reloadedGetCryptoRandomValues(array);
+
+				expect(result).toBe(array);
+				expect(result.length).toBe(32);
+				// Verify not all zeros
+				const hasNonZero = Array.from(result).some(val => val !== 0);
+				expect(hasNonZero).toBe(true);
+			} finally {
+				// Restore original values
+				globalRef.window = originalWindow;
+				if (originalWindow && originalCrypto) {
+					originalWindow.crypto = originalCrypto;
+				}
+
+				// Clear module cache again to restore normal state
+				jest.resetModules();
+			}
+		});
+
+		it('should throw error when no crypto API is available', () => {
+			// Save references to global object and original values
+			const globalRef = global as any;
+			const originalWindow = globalRef.window;
+			const originalGlobal = globalRef.global;
+
+			try {
+				// Remove window.crypto and global access
+				delete globalRef.window;
+				delete globalRef.global;
+
+				// Clear module cache to force re-evaluation
+				jest.resetModules();
+
+				// Re-import the function
+				const { getCryptoRandomValues: reloadedGetCryptoRandomValues } = require('../src/utils/crypto-adapter');
+
+				// Verify error is thrown
+				const array = new Uint8Array(32);
+				expect(() => reloadedGetCryptoRandomValues(array)).toThrow('No Web Crypto API available in this environment');
+			} finally {
+				// Restore original values
+				globalRef.window = originalWindow;
+				globalRef.global = originalGlobal;
+
+				// Clear module cache again to restore normal state
+				jest.resetModules();
+			}
+		});
+	});
+});