tests: basic smoke test for summary command

Author: gadomski

tests/cli/commands/test_summary.py

@@ -0,0 +1,17 @@
+from typing import Callable, List
+
+from click import Command, Group
+
+from stactools.cli.commands.summary import create_summary_command
+from stactools.testing.cli_test import CliTestCase
+from tests import test_data
+
+
+class SummaryTest(CliTestCase):
+    def create_subcommand_functions(self) -> List[Callable[[Group], Command]]:
+        return [create_summary_command]
+
+    def test_summary(self) -> None:
+        path = test_data.get_path("data-files/planet-disaster/collection.json")
+        result = self.run_command(f"summary {path}")
+        self.assertEqual(0, result.exit_code)