Expand doc_blocks backcompat test

core/dbt/artifacts/resources/v1/components.py

@@ -70,6 +70,18 @@ class ColumnInfo(AdditionalPropertiesMixin, ExtensibleDbtClassMixin):
     granularity: Optional[TimeGranularity] = None
     doc_blocks: List[str] = field(default_factory=list)
 
+    def __post_serialize__(self, dct: Dict, context: Optional[Dict] = None) -> dict:
+        dct = super().__post_serialize__(dct, context)
+
+        # Remove doc_blocks from output if they are not a list of strings
+        if isinstance(dct["doc_blocks"], list):
+            if not all(isinstance(x, str) for x in dct["doc_blocks"]):
+                dct["doc_blocks"] = []
+        else:
+            dct["doc_blocks"] = []
+
+        return dct
+
 
 @dataclass
 class InjectedCTE(dbtClassMixin):
@@ -202,10 +214,19 @@ class ParsedResource(ParsedResourceMandatory):
 
     def __post_serialize__(self, dct: Dict, context: Optional[Dict] = None):
         dct = super().__post_serialize__(dct, context)
+
         if context and context.get("artifact") and "config_call_dict" in dct:
             del dct["config_call_dict"]
         if context and context.get("artifact") and "unrendered_config_call_dict" in dct:
             del dct["unrendered_config_call_dict"]
+
+        # Remove doc_blocks from output if they are not a list of strings
+        if isinstance(dct["doc_blocks"], list):
+            if not all(isinstance(x, str) for x in dct["doc_blocks"]):
+                dct["doc_blocks"] = []
+        else:
+            dct["doc_blocks"] = []
+
         return dct
 
 

tests/functional/docs/test_doc_blocks_backcompat.py

@@ -0,0 +1,38 @@
+import json
+import os
+
+import pytest
+
+from dbt.tests.util import run_dbt
+
+schema_yml = """
+models:
+  - name: my_colors
+    doc_blocks: 2
+    columns:
+      - name: id
+        doc_blocks: 2
+      - name: color
+        doc_blocks: ["hello", 2, "world"]
+"""
+
+
+class TestDocBlocksBackCompat:
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "my_colors.sql": "select 1 as id, 'blue' as color",
+            "schema.yml": schema_yml,
+        }
+
+    def test_doc_blocks_back_compat(self, project):
+        run_dbt(["parse"])
+
+        assert os.path.exists("./target/manifest.json")
+
+        with open("./target/manifest.json") as fp:
+            manifest = json.load(fp)
+
+        model_data = manifest["nodes"]["model.test.my_colors"]
+        assert model_data["doc_blocks"] == []
+        assert all(column["doc_blocks"] == [] for column in model_data["columns"].values())