test

src/helpers/__tests__/ensure-peer-deps.test.ts

@@ -0,0 +1,50 @@
+/* eslint-disable @typescript-eslint/no-require-imports */
+
+// Mock the require calls
+jest.mock('react/package.json', () => ({ version: '19.0.0' }), { virtual: true });
+jest.mock('react-test-renderer/package.json', () => ({ version: '19.0.0' }), { virtual: true });
+
+describe('ensurePeerDeps', () => {
+  const originalEnv = process.env;
+
+  beforeEach(() => {
+    jest.resetModules();
+    process.env = { ...originalEnv };
+    delete process.env.RNTL_SKIP_DEPS_CHECK;
+  });
+
+  afterEach(() => {
+    process.env = originalEnv;
+  });
+
+  it('should not throw when versions match', () => {
+    expect(() => require('../ensure-peer-deps')).not.toThrow();
+  });
+
+  it('should throw when react-test-renderer is missing', () => {
+    jest.mock('react-test-renderer/package.json', () => {
+      throw new Error('Module not found');
+    });
+
+    expect(() => require('../ensure-peer-deps')).toThrow(
+      'Missing dev dependency "react-test-renderer@19.0.0"',
+    );
+  });
+
+  it('should throw when react-test-renderer version mismatches', () => {
+    jest.mock('react-test-renderer/package.json', () => ({ version: '18.2.0' }));
+
+    expect(() => require('../ensure-peer-deps')).toThrow(
+      'Incorrect version of "react-test-renderer" detected. Expected "19.0.0", but found "18.2.0"',
+    );
+  });
+
+  it('should skip dependency check when RNTL_SKIP_DEPS_CHECK is set', () => {
+    process.env.RNTL_SKIP_DEPS_CHECK = '1';
+    jest.mock('react-test-renderer/package.json', () => {
+      throw new Error('Module not found');
+    });
+
+    expect(() => require('../ensure-peer-deps')).not.toThrow();
+  });
+});