feat: add method to export Topic as json object

Author: chriswblake

openproficiency/Topic.py

@@ -77,6 +77,15 @@ def add_pretopics(self, pretopics: List[Union[str, "Topic"]]) -> None:
         for pretopic in pretopics:
             self.add_pretopic(pretopic)
 
+    def to_json(self) -> dict:
+        """Convert Topic to JSON-serializable dictionary."""
+        return {
+            "id": self.id,
+            "description": self.description,
+            "subtopics": self.subtopics,
+            "pretopics": self.pretopics
+        }
+
     # Debugging
     def __repr__(self) -> str:
         """String representation of Topic."""

tests/Topic_test.py

@@ -141,6 +141,27 @@ def test_add_pretopics_mixed(self):
         assert pretopic1 in topic.pretopics
         assert pretopic2.id in topic.pretopics
 
+    def test_to_json(self):
+        """Test converting a Topic to JSON."""
+
+        # Arrange
+        topic = Topic(
+            id="git-merge",
+            description="Combining branches in Git",
+            subtopics=["git-branch", "git-commit"],
+            pretopics=["cli"]
+        )
+
+        # Act
+        topic_json = topic.to_json()
+
+        # Assert
+        assert topic_json["id"] == "git-merge"
+        assert topic_json["description"] == "Combining branches in Git"
+        assert "git-branch" in topic_json["subtopics"]
+        assert "git-commit" in topic_json["subtopics"]
+        assert "cli" in topic_json["pretopics"]
+
     # Debugging
     def test_topic_repr(self):
         """Check string representation of a Topic"""