ci: add tests

test/integration/strict/ensure-strict.test.ts

@@ -0,0 +1,20 @@
+import { skip } from '../../../src/modules/helpers/skip.js';
+import { getRuntime, nodeVersion } from '../../../src/parsers/get-runtime.js';
+import { describe } from '../../../src/modules/helpers/describe.js';
+import { assert } from '../../../src/modules/essentials/assert.js';
+
+if ((nodeVersion && nodeVersion < 16) || getRuntime() === 'deno') {
+  skip('Strict method is available from Node.js 16');
+}
+
+describe('Ensure strict', async () => {
+  const { strict } = await import('../../../src/modules/essentials/strict.js');
+
+  const actual = Object.create(null);
+  const expected = { name: 'John' };
+
+  actual.name = 'John';
+
+  assert.deepEqual(actual, expected);
+  strict.notDeepEqual(actual, expected);
+});