diff --git a/07.Pytest-DEMO/test_tasks_api.py b/07.Pytest-DEMO/test_tasks_api.py
new file mode 100644
index 0000000..b1e414e
--- /dev/null
+++ b/07.Pytest-DEMO/test_tasks_api.py
@@ -0,0 +1,76 @@
+import json
+import pytest
+
+try:
+    from flask import Flask, jsonify, request
+except ModuleNotFoundError:
+    Flask = None
+
+
+@pytest.fixture
+def app():
+    if Flask is None:
+        pytest.skip("Flask not installed")
+    app = Flask(__name__)
+    app.config['TESTING'] = True
+    tasks = [
+        {'id': 1, 'title': 'existing task'}
+    ]
+
+    @app.route('/tasks', methods=['GET'])
+    def list_tasks():
+        return jsonify(tasks)
+
+    @app.route('/tasks', methods=['POST'])
+    def add_task():
+        task = request.json
+        tasks.append(task)
+        return jsonify(task), 201
+
+    @app.route('/tasks/<int:task_id>', methods=['GET'])
+    def get_task(task_id):
+        for task in tasks:
+            if task['id'] == task_id:
+                return jsonify(task)
+        return jsonify({'message': 'task not found'}), 404
+
+    @app.route('/tasks/<int:task_id>', methods=['DELETE'])
+    def delete_task(task_id):
+        for i, task in enumerate(tasks):
+            if task['id'] == task_id:
+                tasks.pop(i)
+                return jsonify({'message': 'task deleted'})
+        return jsonify({'message': 'task not found'}), 404
+
+    return app
+
+
+@pytest.fixture
+def client(app):
+    return app.test_client()
+
+
+def test_get_tasks(client):
+    resp = client.get('/tasks')
+    assert resp.status_code == 200
+    data = resp.get_json()
+    assert isinstance(data, list)
+    assert len(data) == 1
+
+
+def test_add_task(client):
+    new_task = {'id': 2, 'title': 'new task'}
+    resp = client.post('/tasks', json=new_task)
+    assert resp.status_code == 201
+    assert resp.get_json() == new_task
+
+    resp = client.get('/tasks/2')
+    assert resp.status_code == 200
+    assert resp.get_json() == new_task
+
+    resp = client.delete('/tasks/2')
+    assert resp.status_code == 200
+    assert resp.get_json()['message'] == 'task deleted'
+
+    resp = client.get('/tasks/2')
+    assert resp.status_code == 404