1 files changed, 28 insertions, 0 deletions
diff --git a/gerbonara/tests/conftest.py b/gerbonara/tests/conftest.py
index b999027..bd89901 100644
--- a/gerbonara/tests/conftest.py
+++ b/gerbonara/tests/conftest.py
@@ -1,4 +1,5 @@
 
+import os
 from pathlib import Path
 
 import pytest
@@ -33,3 +34,30 @@ def pytest_sessionstart(session):
         run_cargo_cmd('resvg', '--help')
     except FileNotFoundError:
         pytest.exit('resvg binary not found, aborting test.', 2)
+
+def pytest_addoption(parser):
+    parser.addoption('--kicad-symbol-library', nargs='*', help='Run symbol library tests on given symbol libraries. May be given multiple times.')
+    parser.addoption('--kicad-footprint-files', nargs='*', help='Run footprint library tests on given footprint files. May be given multiple times.')
+
+def pytest_generate_tests(metafunc):
+    if 'kicad_library_file' in metafunc.fixturenames:
+        if not (library_files := metafunc.config.getoption('symbol_library', None)):
+            if (lib_dir := os.environ.get('KICAD_SYMBOLS')):
+                lib_dir = Path(lib_dir).expanduser()
+                if not lib_dir.is_dir():
+                    raise ValueError(f'Path "{lib_dir}" given by KICAD_SYMBOLS environment variable does not exist or is not a directory.')
+                library_files = list(lib_dir.glob('*.kicad_sym'))
+            else:
+                raise ValueError('Either --kicad-symbol-library command line parameter or KICAD_SYMBOLS environment variable must be given.')
+        metafunc.parametrize('kicad_library_file', library_files, ids=list(map(str, library_files)))
+
+    if 'kicad_mod_file' in metafunc.fixturenames:
+        if not (mod_files := metafunc.config.getoption('footprint_files', None)):
+            if (lib_dir := os.environ.get('KICAD_FOOTPRINTS')):
+                lib_dir = Path(lib_dir).expanduser()
+                if not lib_dir.is_dir():
+                    raise ValueError(f'Path "{lib_dir}" given by KICAD_FOOTPRINTS environment variable does not exist or is not a directory.')
+                mod_files = list(lib_dir.glob('**/*.kicad_mod'))
+            else:
+                raise ValueError('Either --kicad-footprint-files command line parameter or KICAD_FOOTPRINTS environment variable must be given.')
+        metafunc.parametrize('kicad_mod_file', mod_files, ids=list(map(str, mod_files)))