Add tests for cross-database cast macro

.changes/unreleased/Features-20240412-192040.yaml

@@ -0,0 +1,6 @@
+kind: Features
+body: Cross-database `cast` macro
+time: 2024-04-12T19:20:40.904842-06:00
+custom:
+  Author: MichelleArk dbeatty10
+  Issue: "84"

dbt-tests-adapter/dbt/tests/adapter/utils/fixture_cast.py

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+# cast
+
+seeds__data_cast_csv = """field,output
+abc,abc
+123,123
+,
+"""
+
+
+models__test_cast_sql = """
+with data as (
+
+    select * from {{ ref('data_cast') }}
+
+)
+
+select
+    {{ cast('field', api.Column.translate_type('string')) }} as actual,
+    output as expected
+
+from data
+"""
+
+
+models__test_cast_yml = """
+version: 2
+models:
+  - name: test_cast
+    data_tests:
+      - assert_equal:
+          actual: actual
+          expected: expected
+"""

dbt-tests-adapter/dbt/tests/adapter/utils/test_cast.py

@@ -0,0 +1,23 @@
+import pytest
+
+from dbt.tests.adapter.utils import base_utils, fixture_cast
+
+
+class BaseCast(base_utils.BaseUtils):
+    @pytest.fixture(scope="class")
+    def seeds(self):
+        return {"data_cast.csv": fixture_cast.seeds__data_cast_csv}
+
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "test_cast.yml": fixture_cast.models__test_cast_yml,
+            "test_cast.sql": self.interpolate_macro_namespace(
+                self.interpolate_macro_namespace(fixture_cast.models__test_cast_sql, "cast"),
+                "type_string",
+            ),
+        }
+
+
+class TestCast(BaseCast):
+    pass