Create BQ version of string_literal with correct quoting (#1089)

* Create BQ version of string_literal with correct quoting

* Fix macro for whitespace and add test.

---------

Co-authored-by: dave-connors-3 <[email protected]>
Co-authored-by: Mike Alfare <[email protected]>
Co-authored-by: Mila Page <[email protected]>
Co-authored-by: Mila Page <[email protected]>

Author: 4 people

.changes/unreleased/Fixes-20240205-102954.yaml

@@ -0,0 +1,6 @@
+kind: Fixes
+body: Fix dbt.string_literal for BQ when there are newlines
+time: 2024-02-05T10:29:54.145326+01:00
+custom:
+  Author: b-per
+  Issue: "1088"

dbt/include/bigquery/macros/utils/string_literal.sql

@@ -0,0 +1,3 @@
+{%- macro bigquery__string_literal(value) -%}
+    '''{{ value }}'''
+{%- endmacro -%}

tests/functional/adapter/test_string_literal_macro.py

@@ -0,0 +1,17 @@
+import pytest
+from dbt.tests.util import run_dbt
+
+
+_MODEL_SQL = """
+select {{ dbt.string_literal('my multiline
+string') }} as test
+"""
+
+
+class TestStringLiteralQuoting:
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {"my_model.sql": _MODEL_SQL}
+
+    def test_string_literal_quoting(self, project):
+        run_dbt()