feat(resolvers): added dummy resolver to clouds that don't require re…

…solvers to work

src/resolvers/dummy/dummy.resolver.ts

@@ -0,0 +1,21 @@
+//#region Imports
+
+import { Resolver, ResolverContract } from '../../contracts';
+
+//#endregion
+
+/**
+ * The class that represents a dummy resolver that does nothing and can be used by the cloud that doesn't use resolvers.
+ */
+export class DummyResolver
+  implements ResolverContract<any, any, any, any, any>
+{
+  /**
+   * @inheritDoc
+   */
+  public createResolver(): Resolver<any, void> {
+    return {
+      run: () => Promise.resolve(),
+    };
+  }
+}

test/resolvers/dummy.resolver.spec.ts

@@ -0,0 +1,13 @@
+import { DummyResolver } from '../../src/resolvers/dummy/dummy.resolver';
+
+describe(DummyResolver.name, () => {
+  it('should do nothing when called and return undefined', () => {
+    const resolver = new DummyResolver();
+
+    const task = jest.fn();
+
+    resolver.createResolver().run(task);
+
+    expect(task).not.toHaveBeenCalled();
+  });
+});