diff --git a/apps/crud/jest.config.ts b/apps/crud/jest.config.ts
new file mode 100644
index 0000000..0c36a73
--- /dev/null
+++ b/apps/crud/jest.config.ts
@@ -0,0 +1,22 @@
+/* eslint-disable */
+export default {
+  displayName: 'crud',
+  preset: '../../jest.preset.js',
+  setupFilesAfterEnv: ['<rootDir>/src/test-setup.ts'],
+  globals: {
+    'ts-jest': {
+      tsconfig: '<rootDir>/tsconfig.spec.json',
+      stringifyContentPathRegex: '\\.(html|svg)$',
+    },
+  },
+  coverageDirectory: '../../coverage/apps/crud',
+  transform: {
+    '^.+\\.(ts|mjs|js|html)$': 'jest-preset-angular',
+  },
+  transformIgnorePatterns: ['node_modules/(?!.*\\.mjs$)'],
+  snapshotSerializers: [
+    'jest-preset-angular/build/serializers/no-ng-attributes',
+    'jest-preset-angular/build/serializers/ng-snapshot',
+    'jest-preset-angular/build/serializers/html-comment',
+  ],
+};
diff --git a/apps/crud/project.json b/apps/crud/project.json
index 675e401..d0fcadf 100644
--- a/apps/crud/project.json
+++ b/apps/crud/project.json
@@ -79,6 +79,14 @@
       "options": {
         "lintFilePatterns": ["apps/crud/**/*.ts", "apps/crud/**/*.html"]
       }
+    },
+    "test": {
+      "executor": "@nrwl/jest:jest",
+      "outputs": ["{workspaceRoot}/coverage/{projectRoot}"],
+      "options": {
+        "jestConfig": "apps/crud/jest.config.ts",
+        "passWithNoTests": true
+      }
     }
   },
   "tags": []
diff --git a/apps/crud/src/app/app.store.ts b/apps/crud/src/app/app.store.ts
new file mode 100644
index 0000000..c875718
--- /dev/null
+++ b/apps/crud/src/app/app.store.ts
@@ -0,0 +1,58 @@
+import { Injectable } from '@angular/core';
+import { ComponentStore, tapResponse } from '@ngrx/component-store';
+import { pipe, switchMap, tap } from 'rxjs';
+import { Todo } from './todo.model';
+import { TodoService } from './todo.service';
+
+@Injectable()
+export class AppStore extends ComponentStore<{
+  todos: Todo[];
+  loading: boolean;
+}> {
+  readonly todos$ = this.select((state) => state.todos);
+  readonly loading$ = this.select((state) => state.loading);
+
+  readonly person$;
+
+  readonly vm$ = this.select({
+    todos: this.todos$,
+    loading: this.loading$,
+  });
+
+  constructor(private todoService: TodoService) {
+    super({ todos: [], loading: false });
+  }
+
+  private readonly updateTodos = this.updater((state, todo: Todo) => ({
+    loading: false,
+    todos: state.todos.map((t) => (t.id === todo.id ? { ...todo } : t)),
+  }));
+
+  readonly fetchTodo = this.effect<void>(
+    pipe(
+      tap(() => this.patchState({ loading: true })),
+      switchMap(() =>
+        this.todoService.getAllTodo().pipe(
+          tapResponse(
+            (todos) => this.patchState({ todos, loading: false }),
+            (_) => _
+          )
+        )
+      )
+    )
+  );
+
+  readonly updateTodo = this.effect<number>(
+    pipe(
+      tap(() => this.patchState({ loading: true })),
+      switchMap((id) =>
+        this.todoService.update(id).pipe(
+          tapResponse(
+            (todo) => this.updateTodos(todo),
+            (_) => _
+          )
+        )
+      )
+    )
+  );
+}
diff --git a/apps/crud/src/test-setup.ts b/apps/crud/src/test-setup.ts
new file mode 100644
index 0000000..1100b3e
--- /dev/null
+++ b/apps/crud/src/test-setup.ts
@@ -0,0 +1 @@
+import 'jest-preset-angular/setup-jest';
diff --git a/apps/crud/tsconfig.json b/apps/crud/tsconfig.json
index 0b7a078..c756d84 100644
--- a/apps/crud/tsconfig.json
+++ b/apps/crud/tsconfig.json
@@ -6,6 +6,9 @@
     {
       "path": "./tsconfig.app.json"
     },
+    {
+      "path": "./tsconfig.spec.json"
+    },
     {
       "path": "./tsconfig.editor.json"
     }
diff --git a/apps/crud/tsconfig.spec.json b/apps/crud/tsconfig.spec.json
new file mode 100644
index 0000000..c5db027
--- /dev/null
+++ b/apps/crud/tsconfig.spec.json
@@ -0,0 +1,10 @@
+{
+  "extends": "./tsconfig.json",
+  "compilerOptions": {
+    "outDir": "../../dist/out-tsc",
+    "module": "commonjs",
+    "types": ["jest", "node"]
+  },
+  "files": ["src/test-setup.ts"],
+  "include": ["jest.config.ts", "**/*.test.ts", "**/*.spec.ts", "**/*.d.ts"]
+}