Test Conversion for Query Tag Tests (#235)

* init push for conversion of query_tag_tests to new python format

* add changelog

* working on formatting

* require prefix fixture from project.py passing on views, failing on incremental and tables currently during build

* updating based on changes from pr 210 to adding query tags to tests

* line fix and remove changelog entry

* line fix and remove changelog entry

tests/functional/query_tag/test_query_tags.py

@@ -0,0 +1,135 @@
+import pytest
+from dbt.tests.util import run_dbt
+import os
+
+snapshots__snapshot_query_tag_sql = """
+{% snapshot snapshot_query_tag %}
+    {{
+        config(
+            target_database=database,
+            target_schema=schema,
+            unique_key='id',
+            strategy='check',
+            check_cols=['color'],
+        )
+    }}
+    select 1 as id, 'blue' as color
+{% endsnapshot %}
+
+"""
+
+models__table_model_query_tag_sql = """
+{{ config(materialized = 'table') }}
+
+select 1 as id
+
+"""
+
+models__models_config_yml = """
+version: 2
+
+models:
+  - name: view_model_query_tag
+    columns:
+      - name: id
+        tests:
+          - unique
+
+"""
+
+models__view_model_query_tag_sql = """
+{{ config(materialized = 'view') }}
+
+select 1 as id
+
+"""
+
+models__incremental_model_query_tag_sql = """
+{{ config(materialized = 'incremental', unique_key = 'id') }}
+
+select 1 as id
+
+"""
+
+macros__check_tag_sql = """
+{% macro check_query_tag() %}
+
+  {% if execute %}
+    {% set query_tag = get_current_query_tag() %}
+    {% if query_tag != var("query_tag") %}
+      {{ exceptions.raise_compiler_error("Query tag not used!") }}
+    {% endif %}
+  {% endif %}
+
+{% endmacro %}
+
+"""
+
+seeds__seed_query_tag_csv = """id
+1
+"""
+
+class TestQueryTag:
+    @pytest.fixture(scope="class")
+    def models(self):
+        return {
+            "table_model_query_tag.sql": models__table_model_query_tag_sql,
+            "view_model_query_tag.sql": models__view_model_query_tag_sql,
+            "incremental_model_query_tag.sql": models__incremental_model_query_tag_sql,
+            "models_config.yml": models__models_config_yml,
+            }
+
+    @pytest.fixture(scope="class")
+    def snapshots(self):
+        return {
+            "snapshot_query_tag.sql": snapshots__snapshot_query_tag_sql
+            }
+
+    @pytest.fixture(scope="class")
+    def macros(self):
+        return {
+            "check_tag.sql": macros__check_tag_sql
+            }
+
+    @pytest.fixture(scope="class")
+    def seeds(self):
+        return {
+            "seed_query_tag.csv": seeds__seed_query_tag_csv
+            }
+
+    @pytest.fixture(scope="class")
+    def project_config_update(self, prefix):
+        return {
+            'config-version': 2,
+            'models': {
+                'tests': {
+                    'query_tag': prefix,
+                    'post-hook': '{{ check_tag() }}'
+                },
+            },
+            'seeds': {
+                'tests': {
+                    'query_tag': prefix,
+                    'post-hook': '{{ check_tag() }}'
+                },
+            },
+            'snapshots': {
+                'tests': {
+                    'query_tag': prefix,
+                    'post-hook': '{{ check_tag() }}'
+                },
+            },
+            'tests': {
+                'test': {
+                    'query_tag': prefix,
+                    'post-hook': '{{ check_query_tag() }}'
+                }
+            },
+        }
+
+    def build_all_with_query_tags(self, project, prefix):
+        run_dbt(['build', '--vars', '{{"check_tag": "{}"}}'.format(prefix)])
+
+    def test_snowflake_query_tag(self, project, prefix):
+        self.build_all_with_query_tags(project, prefix)
+        self.build_all_with_query_tags(project, prefix)