Improve log upload handling

tests/test_config.py

@@ -0,0 +1,15 @@
+from app.config import _get_max_content_length
+
+
+def test_max_upload_size_mb_environment_variable(monkeypatch):
+    monkeypatch.setenv("MAX_UPLOAD_SIZE_MB", "42")
+    monkeypatch.delenv("MAX_CONTENT_LENGTH", raising=False)
+
+    assert _get_max_content_length() == 42 * 1024 * 1024
+
+
+def test_max_content_length_environment_variable_is_supported(monkeypatch):
+    monkeypatch.delenv("MAX_UPLOAD_SIZE_MB", raising=False)
+    monkeypatch.setenv("MAX_CONTENT_LENGTH", "2048")
+
+    assert _get_max_content_length() == 2048