Restore CI test for case-sensitive identifiers when generating sources (#192)

* Restore case sensitivity test

* Try to make integration test adapter-agnostic

* Try to make integration test CI-agnostic and adapter-agnostic

* Use adapter-agnostic data types

* Temporarily hard-code case-insensitive seed name for Snowflake

* Temporarily hard-code case-insensitive seed name for Snowflake

Author: dbeatty10

integration_tests/dbt_project.yml

@@ -22,6 +22,10 @@ flags:
 seeds:
   +schema: raw_data
   +quote_columns: false
+  codegen_integration_tests:
+    data__Case_Sensitive:
+      +schema: Raw_Data_Case_Sensitive
+      quote_columns: true
 
 vars:
   my_table_reference: table_c

integration_tests/seeds/data__Case_Sensitive.csv

@@ -0,0 +1,3 @@
+Col_A,Col_B
+1,a
+2,b

integration_tests/tests/test_generate_source_case_sensitive.sql

@@ -0,0 +1,35 @@
+
+{% set raw_schema = generate_schema_name('Raw_Data_Case_Sensitive') %}
+
+-- test default args
+{% set actual_source_yaml = codegen.generate_source(
+    schema_name=raw_schema,
+    database_name=target.database,
+    generate_columns=True,
+    name=raw_schema,
+    include_database=True,
+    include_schema=True,
+    case_sensitive_databases=True,
+    case_sensitive_schemas=True,
+    case_sensitive_tables=True,
+    case_sensitive_cols=True
+) %}
+
+{% set expected_source_yaml %}
+version: 2
+
+sources:
+  - name: {{ raw_schema | lower }}
+    database: {{ target.database }}
+    schema: {{ raw_schema }}
+    tables:
+      - name: {% if target.type == "snowflake" %}DATA__CASE_SENSITIVE{% else %}data__Case_Sensitive{% endif %}
+        columns:
+          - name: Col_A
+            data_type: {{ integer_type_value() }}
+          - name: Col_B
+            data_type: {{ text_type_value() }}
+{% endset %}
+
+
+{{ assert_equal (actual_source_yaml | trim, expected_source_yaml | trim) }}