test: add initial test cases

tests/test_checkcert.py

@@ -0,0 +1,17 @@
+from checkcert.checkcert import main as cert_main
+from checkcert.checkcert import __version__ as cert_version
+from click.testing import CliRunner
+
+runner = CliRunner()
+
+
+def test_main():
+    if cert_main:
+        response = runner.invoke(cert_main, ["www.franklin.edu"])
+        assert response.exit_code == 0
+
+
+def test_version():
+    response = runner.invoke(cert_main, ["--version"])
+    assert response.exit_code == 0
+    assert cert_version in response.output