Implement partial parsing for singular data tests configs in yaml files

.changes/unreleased/Fixes-20241205-145307.yaml

@@ -0,0 +1,6 @@
+kind: Fixes
+body: Implement partial parsing for singular data test configs in yaml files
+time: 2024-12-05T14:53:07.295536-05:00
+custom:
+  Author: gshank
+  Issue: "10801"

core/dbt/parser/partial.py

@@ -725,6 +725,7 @@
         handle_change("semantic_models", self.delete_schema_semantic_model)
         handle_change("unit_tests", self.delete_schema_unit_test)
         handle_change("saved_queries", self.delete_schema_saved_query)
+        handle_change("data_tests", self.delete_schema_data_test_patch)
 
     def _handle_element_change(
         self, schema_file, saved_yaml_dict, new_yaml_dict, env_var_changes, dict_key: str, delete
@@ -919,6 +920,23 @@
                 self.saved_files[macro_file_id] = deepcopy(self.new_files[macro_file_id])
                 self.add_to_pp_files(self.saved_files[macro_file_id])
 
+    def delete_schema_data_test_patch(self, schema_file, data_test):
+        data_test_unique_id = None
+        for unique_id in schema_file.node_patches:
+            if not unique_id.startswith("test"):
+                continue
+            parts = unique_id.split(".")
+            elem_name = parts[2]
+            if elem_name == data_test["name"]:
+                data_test_unique_id = unique_id
+                break
+        if data_test_unique_id and data_test_unique_id in self.saved_manifest.nodes:
+            singular_data_test = self.saved_manifest.nodes.pop(data_test_unique_id)
+            file_id = singular_data_test.file_id
+            if file_id in self.new_files:
+                self.saved_files[file_id] = deepcopy(self.new_files[file_id])
+                self.add_to_pp_files(self.saved_files[file_id])
+
     # exposures are created only from schema files, so just delete
     # the exposure or the disabled exposure.
     def delete_schema_exposure(self, schema_file, exposure_dict):

core/dbt/parser/schemas.py

@@ -1199,8 +1199,6 @@ def parse_patch(self, block: TargetBlock[UnparsedSingularTestUpdate], refs: Pars
         node.patch_path = patch.file_id
         node.description = patch.description
         node.created_at = time.time()
-        node.meta = patch.meta
-        node.docs = patch.docs
 
 
 class MacroPatchParser(PatchParser[UnparsedMacroUpdate, ParsedMacroPatch]):

tests/functional/data_test_patch/fixtures.py

@@ -13,8 +13,18 @@
     description: "{{ doc('my_singular_test_documentation') }}"
     config:
       error_if: ">10"
-    meta:
-      some_key: some_val
+      meta:
+        some_key: some_val
+"""
+
+tests__schema_2_yml = """
+data_tests:
+  - name: my_singular_test
+    description: "My singular test description"
+    config:
+      error_if: ">10"
+      meta:
+        some_key: another_val
 """
 
 tests__doc_block_md = """

tests/functional/data_test_patch/test_singular_test_patch.py

@@ -2,12 +2,13 @@
 
 import pytest
 
-from dbt.tests.util import get_artifact, run_dbt, run_dbt_and_capture
+from dbt.tests.util import get_manifest, run_dbt, run_dbt_and_capture, write_file
 from tests.functional.data_test_patch.fixtures import (
     tests__doc_block_md,
     tests__invalid_name_schema_yml,
     tests__malformed_schema_yml,
     tests__my_singular_test_sql,
+    tests__schema_2_yml,
     tests__schema_yml,
 )
 
@@ -23,13 +24,22 @@ def tests(self):
 
     def test_compile(self, project):
         run_dbt(["compile"])
-        manifest = get_artifact(project.project_root, "target", "manifest.json")
-        assert len(manifest["nodes"]) == 1
+        manifest = get_manifest(project.project_root)
+        assert len(manifest.nodes) == 1
 
-        my_singular_test_node = manifest["nodes"]["test.test.my_singular_test"]
-        assert my_singular_test_node["description"] == "Some docs from a doc block"
-        assert my_singular_test_node["config"]["error_if"] == ">10"
-        assert my_singular_test_node["config"]["meta"] == {"some_key": "some_val"}
+        my_singular_test_node = manifest.nodes["test.test.my_singular_test"]
+        assert my_singular_test_node.description == "Some docs from a doc block"
+        assert my_singular_test_node.config.error_if == ">10"
+        assert my_singular_test_node.config.meta == {"some_key": "some_val"}
+        assert my_singular_test_node.meta == {"some_key": "some_val"}
+
+        # partial parsing test
+        write_file(tests__schema_2_yml, project.project_root, "tests", "schema.yml")
+        manifest = run_dbt(["parse"])
+        test_node = manifest.nodes["test.test.my_singular_test"]
+        assert test_node.description == "My singular test description"
+        assert test_node.config.meta == {"some_key": "another_val"}
+        assert test_node.meta == {"some_key": "another_val"}
 
 
 class TestPatchSingularTestInvalidName: