Python: basic, package install, error handler for begining

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

tests/lib/test_dir_not_found_error.py

@@ -0,0 +1,25 @@
+from repo_cloner.lib.dir_not_found_error import DirNotFoundError
+from pathlib import PosixPath
+
+
+def test_type():
+	x = DirNotFoundError()
+	assert isinstance(x, DirNotFoundError)
+
+
+def test_return():
+	x = DirNotFoundError("/tmp")
+	s = x.__str__()
+	assert s == "Directory does not exist / is not a dir: /tmp"
+
+
+def test_return_empty():
+	x = DirNotFoundError()
+	s = x.__str__()
+	assert s == "DirNotFoundError()"
+
+
+def test_posix_path():
+	d = PosixPath("/nonexistent")
+	x = DirNotFoundError(d)
+	assert x.__str__() == "Directory does not exist / is not a dir: /nonexistent"