Add ability to run dbt tests with ClickHouse, passing TestResultData …

…validation (#18)

README.md

@@ -26,6 +26,7 @@ pip install dbt-clickhouse
 - [x] Seeds
 - [x] Sources
 - [x] Docs generate
+- [x] Tests
 - [x] Snapshots (experimental)
 - [ ] Ephemeral materialization
 

dbt/include/clickhouse/macros/materializations/test.sql

@@ -0,0 +1,12 @@
+{% macro clickhouse__get_test_sql(main_sql, fail_calc, warn_if, error_if, limit) -%}
+    select
+      {{ fail_calc }} as failures,
+      case when {{ fail_calc }} {{ warn_if }}
+        then 'true' else 'false' end as should_warn,
+      case when {{ fail_calc }} {{ error_if }}
+        then 'true' else 'false' end as should_error
+    from (
+      {{ main_sql }}
+      {{ "limit " ~ limit if limit != none }}
+    ) dbt_internal_test
+{%- endmacro %}

test/integration/clickhouse.dbtspec

@@ -11,8 +11,4 @@ sequences:
   test_dbt_snapshot_strategy_timestamp: snapshot_strategy_timestamp
   test_dbt_snapshot_strategy_check_cols: snapshot_strategy_check_cols
   test_dbt_data_test: data_test
-  # Version 0.20.0 validates schema a TestResultData
-  # https://github.com/dbt-labs/dbt/blob/e3cb050bbc8faa763f325c89247d9da4d0984724/core/dbt/task/test.py#L34
-  # But ClickHouse does not have a boolean type (instead of uint8)
-  # The test works, but we are skipping it
-  # test_dbt_schema_test: schema_test
+  test_dbt_schema_test: schema_test