allow to choose qr reader for images

tests/conftest.py

@@ -1,11 +1,22 @@
-import pytest
 from typing import Any
 
+import pytest
+
+from extract_otp_secrets import QRMode
+
 
 def pytest_addoption(parser: pytest.Parser) -> None:
     parser.addoption("--relaxed", action='store_true', help="run tests in relaxed mode")
+    parser.addoption("--fast", action="store_true", help="faster execution, do not run all combinations")
 
 
 @pytest.fixture
 def relaxed(request: pytest.FixtureRequest) -> Any:
     return request.config.getoption("--relaxed")
+
+
+def pytest_generate_tests(metafunc: pytest.Metafunc) -> None:
+    if "qr_mode" in metafunc.fixturenames:
+        number = 2 if metafunc.config.getoption("fast") else len(QRMode)
+        qr_modes = [mode.name for mode in QRMode]
+        metafunc.parametrize("qr_mode", qr_modes[0:number])

tests/data/print_verbose_output.txt

@@ -1,4 +1,6 @@
 QReader installed: True
+QR reading mode: ZBAR
+
 Input files: ['example_export.txt']
 Processing infile example_export.txt
 Reading lines of example_export.txt

tests/extract_otp_secrets_test.py

@@ -582,6 +582,18 @@ def test_img_qr_reader_from_file_happy_path(capsys: pytest.CaptureFixture[str])
     assert captured.err == ''
 
 
+@pytest.mark.qreader
+def test_img_qr_reader_by_parameter(capsys: pytest.CaptureFixture[str], qr_mode: str) -> None:
+    # Act
+    extract_otp_secrets.main(['--qr', qr_mode, 'tests/data/test_googleauth_export.png'])
+
+    # Assert
+    captured = capsys.readouterr()
+
+    assert captured.out == EXPECTED_STDOUT_FROM_EXAMPLE_EXPORT_PNG
+    assert captured.err == ''
+
+
 @pytest.mark.qreader
 def test_extract_multiple_files_and_mixed(capsys: pytest.CaptureFixture[str]) -> None:
     # Act