Add test for server

A test fixture to start the server and a first test case is added.

The fixture tries to assure that the server is installed and running.
If it is not installed the fixture uses pip to install it.

The server and the installation by pip is run bei the same Python
executable that also runs pytest.

The github workflow for pytest is adapted to install akkudoktor-eos.

Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com>

.github/workflows/pytest.yml

@@ -23,7 +23,9 @@ jobs:
           sudo apt install -y libmariadb3 libmariadb-dev
           python -m pip install --upgrade pip
           pip install -r requirements.txt
+          pip install -r requirements-dev.txt
 
       - name: Run Pytest
         run: |
+          pip install -e .
           python -m pytest -vs --cov modules --cov-report term-missing tests/

Makefile

@@ -9,6 +9,7 @@ help:
 	@echo "Available targets:"
 	@echo "  venv       - Set up a Python 3 virtual environment."
 	@echo "  pip        - Install dependencies from requirements.txt."
+	@echo "  pip-dev    - Install dependencies from requirements-dev.txt."
 	@echo "  install    - Install EOS in editable form (development mode) into virtual environment."
 	@echo "  docker-run - Run entire setup on docker
 	@echo "  docs       - Generate HTML documentation using pdoc."
@@ -27,6 +28,11 @@ pip: venv
 	.venv/bin/pip install -r requirements.txt
 	@echo "Dependencies installed from requirements.txt."
 
+# Target to install dependencies from requirements.txt
+pip-dev: pip
+	.venv/bin/pip install -r requirements-dev.txt
+	@echo "Dependencies installed from requirements-dev.txt."
+
 # Target to install EOS in editable form (development mode) into virtual environment.
 install: pip
 	.venv/bin/pip install build
@@ -54,6 +60,10 @@ run:
 	@echo "Starting flask server, please wait..."
 	.venv/bin/python -m akkudoktoreosserver.flask_server
 
+# Target to setup tests.
+test-setup: pip-dev
+	@echo "Setup tests"
+
 # Target to run tests.
 test:
 	@echo "Running tests..."

requirements-dev.txt

@@ -1,2 +1,5 @@
+build==1.2.2.post1
 pytest==8.3.3
+pytest-xprocess==1.0.2
+requests==2.32.3
 pre-commit

tests/conftest.py

@@ -0,0 +1,53 @@
+import os
+import subprocess
+import sys
+
+import pytest
+from xprocess import ProcessStarter
+
+
+@pytest.fixture
+def server(xprocess):
+    class Starter(ProcessStarter):
+        # assure server to be installed
+        try:
+            subprocess.run(
+                [sys.executable, "-c", "import akkudoktoreosserver"],
+                check=True,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+            )
+        except subprocess.CalledProcessError:
+            test_dir = os.path.dirname(os.path.realpath(__file__))
+            project_dir = os.path.abspath(os.path.join(test_dir, ".."))
+            subprocess.run(
+                [sys.executable, "-m", "pip", "install", "-e", project_dir],
+                check=True,
+                stdout=subprocess.PIPE,
+                stderr=subprocess.PIPE,
+            )
+
+        # command to start server process
+        args = [sys.executable, "-m", "akkudoktoreosserver.flask_server"]
+
+        # startup pattern
+        pattern = "Serving Flask app 'flask_server'"
+        # search the first 12 lines for the startup pattern, if not found
+        # a RuntimeError will be raised informing the user
+        max_read_lines = 12
+
+        # will wait for 10 seconds before timing out
+        timeout = 10
+
+        # xprocess will now attempt to clean up upon interruptions
+        terminate_on_interrupt = True
+
+    # ensure process is running and return its logfile
+    logfile = xprocess.ensure("akkudoktoreosserver", Starter)
+
+    # create url/port info to the server
+    url = "http://127.0.0.1:8503"
+    yield url
+
+    # clean up whole process tree afterwards
+    xprocess.getinfo("akkudoktoreosserver").terminate()

tests/test_server.py

@@ -0,0 +1,63 @@
+import requests
+
+
+def test_server(server):
+    """
+    Test the server
+    """
+    result = requests.get(f"{server}/gesamtlast_simple?year_energy=2000&")
+    assert result.status_code == 200
+    assert (
+        result.text
+        == """[
+  0.12399409965368197,
+  0.12082955072761034,
+  0.1186152098599658,
+  0.13282048719613798,
+  0.16801614895243458,
+  0.18833079485066814,
+  0.2060958576163904,
+  0.23815979421159755,
+  0.256794470747979,
+  0.2730286944402595,
+  0.2837831370699189,
+  0.2880791113592318,
+  0.27868845536305187,
+  0.2593976275300202,
+  0.26565341182134644,
+  0.2834322084492842,
+  0.3385133447353511,
+  0.36541124595269503,
+  0.33781770981176945,
+  0.29218838246014817,
+  0.24535542466592053,
+  0.19484917288665324,
+  0.15634028941335018,
+  0.13309410380383394,
+  0.1239736903705896,
+  0.12074280282759843,
+  0.11849705069574769,
+  0.1320224904313182,
+  0.16699106562771282,
+  0.18856343364342354,
+  0.20578134176859084,
+  0.23760516695843145,
+  0.25675411140321175,
+  0.2729442256919556,
+  0.2837782018548114,
+  0.2882881388086184,
+  0.2800061651414149,
+  0.26039842637914645,
+  0.26613497240454587,
+  0.28441116400389416,
+  0.33941195977626437,
+  0.36621100374643395,
+  0.3391062422788601,
+  0.29391186081171267,
+  0.24686897327498972,
+  0.19620626090788126,
+  0.1570820352949701,
+  0.13332596485058107
+]
+"""
+    )