Merge pull request #521 from cody-scott/test-materialization-changes

added test to validate swapping from table to view and view to table

Author: cody-scott

tests/functional/adapter/mssql/test_materialize_change.py

@@ -0,0 +1,62 @@
+import pytest
+from dbt.tests.util import get_connection, run_dbt
+
+model_sql = """
+SELECT 1 AS data
+"""
+
+table_mat = """
+{{
+  config({
+  "materialized": 'table'
+  })
+}}
+SELECT 1 AS data
+"""
+
+view_mat = """
+{{
+  config({
+  "materialized": 'view'
+  })
+}}
+SELECT 1 AS data
+"""
+
+schema = """
+version: 2
+models:
+  - name: mat_object
+"""
+
+
+class BaseTableView:
+    def create_object(self, project, sql):
+        with get_connection(project.adapter):
+            project.adapter.execute(sql, fetch=True)
+
+
+class TestTabletoView(BaseTableView):
+    """Test if changing from a table object to a view object correctly replaces"""
+
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {"mat_object.sql": view_mat, "schema.yml": schema}
+
+    def test_passes(self, project):
+        self.create_object(
+            project, f"SELECT * INTO {project.test_schema}.mat_object FROM ({model_sql}) t"
+        )
+        run_dbt(["run"])
+
+
+class TestViewtoTable(BaseTableView):
+    """Test if changing from a view object to a table object correctly replaces"""
+
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {"mat_object.sql": table_mat, "schema.yml": schema}
+
+    def test_passes(self, project):
+        self.create_object(project, f"CREATE VIEW {project.test_schema}.mat_object AS {model_sql}")
+        run_dbt(["run"])