migrate 034 integration test to functional (#6054)

* migrate 034 integration test to functional

* formatting fixes

* move to adapter directory

* add extra args

tests/adapter/dbt/tests/adapter/relations/test_changing_relation_type.py

@@ -0,0 +1,44 @@
+
+
+from typing import List, Optional
+import pytest
+
+from dbt.tests.util import run_dbt
+
+
+_DEFAULT_CHANGE_RELATION_TYPE_MODEL = """
+{{ config(materialized=var('materialized')) }}
+
+select '{{ var("materialized") }}' as materialization
+
+{% if var('materialized') == 'incremental' and is_incremental() %}
+    where 'abc' != (select max(materialization) from {{ this }})
+{% endif %}
+"""
+
+
+class BaseChangeRelationTypeValidator:
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "model_mc_modelface.sql": _DEFAULT_CHANGE_RELATION_TYPE_MODEL
+        }
+
+    def _run_and_check_materialization(self, materialization, extra_args: Optional[List] = None):
+        run_args = ["run", '--vars', f'materialized: {materialization}']
+        if extra_args:
+            run_args.extend(extra_args)
+        results = run_dbt(run_args)
+        assert results[0].node.config.materialized == materialization
+        assert len(results) == 1
+
+    def test_changing_materialization_changes_relation_type(self, project):
+        self._run_and_check_materialization('view')
+        self._run_and_check_materialization('table')
+        self._run_and_check_materialization('view')
+        self._run_and_check_materialization('incremental')
+        self._run_and_check_materialization('table', extra_args=['--full-refresh'])
+
+
+class TestChangeRelationTypes(BaseChangeRelationTypeValidator):
+    pass