✅ Test click method (#25)

test/click/__init__.py

@@ -0,0 +1 @@
+"""Click tests."""

test/click/click_test.py

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+"""Click test cases."""
+import json
+
+from typing_extensions import Self
+
+from src.click_opt.cli_options import CliOptions
+
+
+class TestClick:
+    """Test clock option."""
+
+    @staticmethod
+    def is_json(myjson: str) -> bool:
+        """Check if a string is json."""
+        try:
+            json.loads(myjson)
+        except ValueError:
+            return False
+        return True
+
+    def test_str_method_print_json(self: Self, cli_options: CliOptions) -> None:
+        """Test str method print json."""
+        str_method = str(cli_options)
+        assert TestClick.is_json(str_method) is True