Json configuration (#141)

* Add json config
* Adjust code to new config

---------

Co-authored-by: Chris <git@nootch.de>

tests/conftest.py

@@ -3,10 +3,21 @@ import os
 import subprocess
 import sys
 import time
+from pathlib import Path
 
 import pytest
 from xprocess import ProcessStarter
 
+from akkudoktoreos.config import EOS_DIR, AppConfig, load_config
+
+
+@pytest.fixture(name="tmp_config")
+def load_config_tmp(tmp_path: Path) -> AppConfig:
+    """Creates an AppConfig from default.config.json with a tmp output directory."""
+    config = load_config(tmp_path)
+    config.directories.output = tmp_path
+    return config
+
 
 @pytest.fixture(autouse=True)
 def disable_debug_logging():
@@ -29,7 +40,7 @@ def is_full_run(request):
 
 
 @pytest.fixture
-def server(xprocess):
+def server(xprocess, tmp_path: Path):
     """Fixture to start the server.
 
     Provides URL of the server.
@@ -45,8 +56,7 @@ def server(xprocess):
                 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, ".."))
+            project_dir = Path(__file__).parent.parent
             subprocess.run(
                 [sys.executable, "-m", "pip", "install", "-e", project_dir],
                 check=True,
@@ -56,14 +66,15 @@ def server(xprocess):
 
         # command to start server process
         args = [sys.executable, "-m", "akkudoktoreosserver.flask_server"]
+        env = {EOS_DIR: f"{tmp_path}", **os.environ.copy()}
 
         # startup pattern
         pattern = "Debugger PIN:"
-        # search the first 12 lines for the startup pattern, if not found
+        # search the first 30 lines for the startup pattern, if not found
         # a RuntimeError will be raised informing the user
-        max_read_lines = 12
+        max_read_lines = 30
 
-        # will wait for 10 seconds before timing out
+        # will wait for 30 seconds before timing out
         timeout = 30
 
         # xprocess will now attempt to clean up upon interruptions