Add config parser functionality

Signed-off-by: Václav Valíček <valicek1994@gmail.com>

tests/lib/test_cloner_config_parser.py

@@ -0,0 +1,72 @@
+from repo_cloner.lib.cloner_config import ClonerConfigParser
+import pytest
+from repo_cloner.lib.config_file_not_found_error import ConfigFileNotFoundError
+from pathlib import Path
+
+
+@pytest.fixture
+def config_path() -> Path:
+	path = Path(__file__).parent.parent
+	return path.joinpath("_support_data", "config")
+
+
+def test_no_config_file():
+	with pytest.raises(ConfigFileNotFoundError) as e:
+		x = ClonerConfigParser("/tmp/path/that/does/not/exist")
+	assert e.__str__() == "<ExceptionInfo ConfigFileNotFoundError('/tmp/path/that/does/not/exist') tblen=2>"
+
+
+def test_valid_config(config_path: Path):
+	cfg = config_path.joinpath("valid.cfg")
+	x = ClonerConfigParser(cfg)
+	assert x.invalid == False
+	assert x.invalid_lines == []
+	c = x.config
+	assert c.cloner_project_name == "some-random-project"
+	assert c.cloner_repo_url == "git@git.somerandomserver.test:/path"
+	assert c.cloner_interval == 666
+	assert c.cloner_submodules == True
+	assert c.cloner_submodule_depth == 500000
+
+
+def test_empty_config(config_path: Path):
+	cfg = config_path.joinpath("empty.cfg")
+	x = ClonerConfigParser(cfg)
+	assert x.invalid == False
+	assert x.invalid_lines == []
+	c = x.config
+	assert c.cloner_project_name == ""
+	assert c.cloner_repo_url == ""
+	assert c.cloner_interval == 5
+	assert c.cloner_submodules == True
+	assert c.cloner_submodule_depth == 50000
+
+
+def test_invalid_config(config_path: Path, caplog):
+	cfg = config_path.joinpath("invalid.cfg")
+	with caplog.at_level(30):
+		x = ClonerConfigParser(cfg)
+
+	# two invalid lines
+	assert x.invalid == True
+	assert x.invalid_lines == [
+		('invalid_option1', None),
+		('invalid_option', "2"),
+	]
+	# test logging
+	assert any(
+		(r.levelname == "CRITICAL" and r.message == "'invalid_option is not recognized config option'")
+		for r in caplog.records
+	)
+
+	assert any(
+		(r.levelname == "WARNING" and r.message == "Line 'invalid_option1' has invalid format!")
+		for r in caplog.records
+	)
+
+	c = x.config
+	assert c.cloner_project_name == "some-random-project"
+	assert c.cloner_repo_url == "git@git.somerandomserver.test:/path"
+	assert c.cloner_interval == 666
+	assert c.cloner_submodules == True
+	assert c.cloner_submodule_depth == 500000