Add test to Biz/Repl.py

It's just a simple test, but it effectively tests that the `CustomRepl` can be
instantiated for the ns and path. I also copied the unittest recipes I came up
with in the other place I used Python tests so far: Biz/Llamacpp.py.

Also, I'm beginning to see how a Biz/Cli.py module might work. Probably just a
simple abstract base class with move, test, help, and tidy methods, pretty
similar to the Haskell version.

1 files changed, 11 insertions, 3 deletions

diff --git a/Biz/Llamacpp.py b/Biz/Llamacpp.py
index 9a2ff86..66b57d8 100644
--- a/Biz/Llamacpp.py
+++ b/Biz/Llamacpp.py
@@ -19,14 +19,22 @@ class TestLlamaCpp(unittest.TestCase):
 
     def test_in_path(self) -> None:
         """Test that llama.cpp is in $PATH."""
-        self.assertTrue("llama-cpp" in os.environ.get("PATH", ""))
+        self.assertIn("llama-cpp", os.environ.get("PATH", ""))
+
+
+def test() -> None:
+    """Run this module's test suite."""
+    suite = unittest.TestSuite()
+    suite.addTests(
+        unittest.defaultTestLoader.loadTestsFromTestCase(TestLlamaCpp),
+    )
+    unittest.TextTestRunner().run(suite)
 
 
 def main() -> None:
     """Entrypoint."""
     if sys.argv[1] == "test":
-        sys.argv.pop()
-        unittest.main()
+        test()
     else:
         sys.exit(0)