1 files changed, 30 insertions, 0 deletions
diff --git a/tests/test_find_python_executable.py b/tests/test_find_python_executable.py
new file mode 100644
index 0000000..161dc7a
--- /dev/null
+++ b/tests/test_find_python_executable.py
@@ -0,0 +1,30 @@
+import os
+import re
+import sys
+
+import pytest
+
+from flit import PythonNotFoundError, find_python_executable
+
+
+def test_default():
+    assert find_python_executable(None) == sys.executable
+
+
+def test_self():
+    assert find_python_executable(sys.executable) == sys.executable
+
+
+def test_abs():
+    assert find_python_executable("/usr/bin/python") == "/usr/bin/python"
+
+
+def test_find_in_path():
+    assert os.path.isabs(find_python_executable("python"))
+
+
+@pytest.mark.parametrize("bad_python_name", ["pyhton", "ls", "."])
+def test_exception(bad_python_name: str):
+    """Test that an appropriate exception (that contains the error string) is raised."""
+    with pytest.raises(PythonNotFoundError, match=re.escape(bad_python_name)):
+        find_python_executable(bad_python_name)