[Redshift] Add tests for unit testing (#680)

* first pass

* fix dbt-common version

* try to fix dbt-postgres version

* fix import

* array and json types as TODO

* add json test, TestRedshiftUnitTestCaseInsensitivity, TestRedshiftUnitTestInvalidInput

* restore requirements

---------

Co-authored-by: Mike Alfare <[email protected]>

dev-requirements.txt

@@ -1,7 +1,8 @@
 # install latest changes in dbt-core + dbt-postgres
 # TODO: how to switch from HEAD to x.y.latest branches after minor releases?
-git+https://github.com/dbt-labs/dbt-core.git#egg=dbt-core&subdirectory=core
 git+https://github.com/dbt-labs/dbt-postgres.git@main
+git+https://github.com/dbt-labs/dbt-core.git#egg=dbt-core&subdirectory=core
+git+https://github.com/dbt-labs/dbt-adapters.git
 git+https://github.com/dbt-labs/dbt-adapters.git#subdirectory=dbt-tests-adapter
 
 # if version 1.x or greater -> pin to major version

setup.py

@@ -48,7 +48,7 @@ def _plugin_version() -> str:
     packages=find_namespace_packages(include=["dbt", "dbt.*"]),
     include_package_data=True,
     install_requires=[
-        "dbt-common<1.0",
+        "dbt-common>=0.1.0,<0.2.0",
         "dbt-adapters~=0.1.0a1",
         f"dbt-postgres~={_plugin_version()}",
         # dbt-redshift depends deeply on this package. it does not follow SemVer, therefore there have been breaking changes in previous patch releases

tests/functional/adapter/unit_testing/test_unit_testing.py

@@ -0,0 +1,42 @@
+import pytest
+from dbt.tests.adapter.unit_testing.test_types import BaseUnitTestingTypes
+from dbt.tests.adapter.unit_testing.test_case_insensitivity import BaseUnitTestCaseInsensivity
+from dbt.tests.adapter.unit_testing.test_invalid_input import BaseUnitTestInvalidInput
+
+
+class TestRedshiftUnitTestingTypes(BaseUnitTestingTypes):
+    @pytest.fixture
+    def data_types(self):
+        # sql_value, yaml_value
+        return [
+            ["1", "1"],
+            ["1.0", "1.0"],
+            ["'1'", "1"],
+            ["'1'::numeric", "1"],
+            ["'string'", "string"],
+            ["true", "true"],
+            ["DATE '2020-01-02'", "2020-01-02"],
+            ["TIMESTAMP '2013-11-03 00:00:00-0'", "2013-11-03 00:00:00-0"],
+            ["TIMESTAMPTZ '2013-11-03 00:00:00-0'", "2013-11-03 00:00:00-0"],
+            [
+                """JSON_PARSE('{"bar": "baz", "balance": 7.77, "active": false}')""",
+                """'{"bar": "baz", "balance": 7.77, "active": false}'""",
+            ],
+            # TODO: array types
+            # ["ARRAY[1,2,3]", """'{1, 2, 3}'"""],
+            # ["ARRAY[1.0,2.0,3.0]", """'{1.0, 2.0, 3.0}'"""],
+            # ["ARRAY[1::numeric,2::numeric,3::numeric]", """'{1.0, 2.0, 3.0}'"""],
+            # ["ARRAY['a','b','c']", """'{"a", "b", "c"}'"""],
+            # ["ARRAY[true,true,false]", """'{true, true, false}'"""],
+            # ["ARRAY[DATE '2020-01-02']", """'{"2020-01-02"}'"""],
+            # ["ARRAY[TIMESTAMP '2013-11-03 00:00:00-0']", """'{"2013-11-03 00:00:00-0"}'"""],
+            # ["ARRAY[TIMESTAMPTZ '2013-11-03 00:00:00-0']", """'{"2013-11-03 00:00:00-0"}'"""],
+        ]
+
+
+class TestRedshiftUnitTestCaseInsensitivity(BaseUnitTestCaseInsensivity):
+    pass
+
+
+class TestRedshiftUnitTestInvalidInput(BaseUnitTestInvalidInput):
+    pass