diff --git a/.github/workflows/python-package-conda.yml b/.github/workflows/build_test.yml
similarity index 67%
rename from .github/workflows/python-package-conda.yml
rename to .github/workflows/build_test.yml
index 0b00100..071ed23 100644
--- a/.github/workflows/python-package-conda.yml
+++ b/.github/workflows/build_test.yml
@@ -1,10 +1,10 @@
-name: Python Package using Conda
+name: Python Package build test
 
 on: 
   push:
-    branches: ["backend"]
+    branches: ["backend*"]
   pull_request:
-    branches: ["backend"]
+    branches: ["backend*"]
 
 jobs:
   build-linux:
@@ -18,22 +18,16 @@ jobs:
       uses: actions/setup-python@v3
       with:
         python-version: '3.10.11'
-    - name: Add conda to system path
-      run: |
-        # $CONDA is an environment variable pointing to the root of the miniconda directory
-        echo $CONDA/bin >> $GITHUB_PATH
     - name: Install dependencies
       run: |
-        # conda env update --file .yml --name base
         pip install -r requirements.txt
+        pip install -e backend
     - name: Lint with flake8
       run: |
-        conda install flake8
         # stop the build if there are Python syntax errors or undefined names
         flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
         flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
     - name: Test with pytest
       run: |
-        conda install pytest
         pytest
\ No newline at end of file
diff --git a/src/__init__.py b/backend/magician/app/__init__.py
similarity index 100%
rename from src/__init__.py
rename to backend/magician/app/__init__.py
diff --git a/backend/magician/app/flask_app.py b/backend/magician/app/flask_app.py
new file mode 100644
index 0000000..cdb6a45
--- /dev/null
+++ b/backend/magician/app/flask_app.py
@@ -0,0 +1,10 @@
+from flask import Flask
+
+from magician.service.print_hello import print_hello
+
+app = Flask(__name__)
+
+
+@app.route('/hello', methods=['GET'])
+def api_hello():
+    return {"msg": print_hello()}, 200
diff --git a/src/service/__init__.py b/backend/magician/service/__init__.py
similarity index 100%
rename from src/service/__init__.py
rename to backend/magician/service/__init__.py
diff --git a/backend/magician/service/print_hello.py b/backend/magician/service/print_hello.py
new file mode 100644
index 0000000..162207b
--- /dev/null
+++ b/backend/magician/service/print_hello.py
@@ -0,0 +1,2 @@
+def print_hello():
+    return 'hello world'
diff --git a/backend/setup.py b/backend/setup.py
new file mode 100644
index 0000000..3688f34
--- /dev/null
+++ b/backend/setup.py
@@ -0,0 +1,7 @@
+from setuptools import setup
+
+setup(
+    name="magician",
+    version="0.1",
+    packages=["magician"],
+)
diff --git a/requirements.txt b/requirements.txt
index 7710096..98886fd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,7 @@
+#app
 flask == 2.3.2
-pytest == 7.3.1
\ No newline at end of file
+
+#test
+flake8 == 6.0.0
+pytest == 7.3.1
+requests == 2.31.0
\ No newline at end of file
diff --git a/src/service/print_hello.py b/src/service/print_hello.py
deleted file mode 100644
index b303cf6..0000000
--- a/src/service/print_hello.py
+++ /dev/null
@@ -1,2 +0,0 @@
-def print_hello():
-    return 'hello world'
\ No newline at end of file
diff --git a/test/__init__.py b/test/__init__.py
deleted file mode 100644
index e69de29..0000000
diff --git a/test/test_hello.py b/test/test_hello.py
deleted file mode 100644
index 7f94f65..0000000
--- a/test/test_hello.py
+++ /dev/null
@@ -1,17 +0,0 @@
-import pytest
-from src.service.print_hello import print_hello 
-
-
-
-def test_mytest():
-    assert 'hello world' == print_hello()
-    # assert 1==2123
-    
-
-# def f():
-#     raise SystemExit(1)
-
-
-# def test_mytest():
-#     with pytest.raises(SystemExit):
-#         f()
\ No newline at end of file
diff --git a/tests/conftest.py b/tests/conftest.py
new file mode 100644
index 0000000..3197026
--- /dev/null
+++ b/tests/conftest.py
@@ -0,0 +1,12 @@
+import pytest
+from magician.app.flask_app import app as flask_app
+
+
+@pytest.fixture
+def app():
+    return flask_app
+
+
+@pytest.fixture
+def client(app):
+    return app.test_client()
diff --git a/tests/e2e/test_api.py b/tests/e2e/test_api.py
new file mode 100644
index 0000000..eb09782
--- /dev/null
+++ b/tests/e2e/test_api.py
@@ -0,0 +1,8 @@
+import json
+
+
+def test_hello(app, client):
+    res = client.get('/hello')
+    assert res.status_code == 200
+    expected = {'msg': 'hello world'}
+    assert expected == json.loads(res.get_data(as_text=True))
diff --git a/tests/unit/test_hello.py b/tests/unit/test_hello.py
new file mode 100644
index 0000000..f9b87cb
--- /dev/null
+++ b/tests/unit/test_hello.py
@@ -0,0 +1,6 @@
+from magician.service.print_hello import print_hello
+
+
+def test_mytest():
+    assert 'hello world' == print_hello()
+    # assert 1==2123