test(): add compare element and internal core module unit tests

packages/core/test/injector/internal-core-module-factory.spec.ts

@@ -1,13 +1,39 @@
+import { ClassProvider, FactoryProvider } from '@nestjs/common';
 import { expect } from 'chai';
+import { ExternalContextCreator } from '../../helpers/external-context-creator';
+import { HttpAdapterHost } from '../../helpers/http-adapter-host';
+import { LazyModuleLoader, ModulesContainer } from '../../injector';
 import { NestContainer } from '../../injector/container';
 import { InternalCoreModule } from '../../injector/internal-core-module';
 import { InternalCoreModuleFactory } from '../../injector/internal-core-module-factory';
 
 describe('InternalCoreModuleFactory', () => {
   it('should return the interal core module definition', () => {
-    expect(
-      InternalCoreModuleFactory.create(new NestContainer(), null, null, null)
-        .module,
-    ).to.equal(InternalCoreModule);
+    const moduleDefinition = InternalCoreModuleFactory.create(
+      new NestContainer(),
+      null,
+      null,
+      null,
+    );
+
+    expect(moduleDefinition.module).to.equal(InternalCoreModule);
+
+    const providedInjectables = moduleDefinition.providers.map(
+      item => (item as ClassProvider | FactoryProvider).provide,
+    );
+    expect(providedInjectables).to.deep.equal([
+      ExternalContextCreator,
+      ModulesContainer,
+      HttpAdapterHost,
+      HttpAdapterHost.name,
+      LazyModuleLoader,
+    ]);
+
+    const lazyModuleLoaderProvider = moduleDefinition.providers.find(
+      item => (item as FactoryProvider)?.provide === LazyModuleLoader,
+    ) as FactoryProvider;
+    expect(lazyModuleLoaderProvider.useFactory()).to.be.instanceOf(
+      LazyModuleLoader,
+    );
   });
 });

packages/websockets/test/utils/compare-element.util.spec.ts

@@ -0,0 +1,9 @@
+import { expect } from 'chai';
+import { compareElementAt } from '../../utils/compare-element.util';
+
+describe('compareElementAt', () => {
+  it('should compare elements at the specific position in arrays', () => {
+    expect(compareElementAt([0, 1, 0], [2, 1, 7], 1)).to.be.true;
+    expect(compareElementAt([0, 1, 0], [2, 0, 7], 1)).to.be.false;
+  });
+});