test(integration) add test to_timestamp

integration_tests/models/schema.yml

@@ -32,4 +32,25 @@ models:
           expected: '`Find_empty_value_expected`'
       - equal_value:
           actual: '`Find_null_value`'
-          expected: '`Find_null_value_expected`'
+          expected: '`Find_null_value_expected`'
+
+  - name: test_to_timestamp
+    tests:
+      - equal_value:
+          actual: '`timestamp_date`'
+          expected: '`timestamp_date_expected`'
+      - equal_value:
+          actual: '`timestamp_datetime`'
+          expected: '`timestamp_datetime_expected`'
+      - equal_value:
+          actual: '`timestamp_datetime_ms`'
+          expected: '`timestamp_datetime_ms_expected`'
+      - equal_value:
+          actual: '`timestamp_datetime_ms4`'
+          expected: '`timestamp_datetime_ms4_expected`'
+      - equal_value:
+          actual: '`timestamp_time`'
+          expected: '`timestamp_time_expected`'
+      - equal_value:
+          actual: '`null_value`'
+          expected: '`null_value_expected`'

integration_tests/models/test_to_timestamp.sql

@@ -0,0 +1,44 @@
+with Input_data as (
+    select
+        '2023-11-12' as `timestamp_date`,
+        '2023-11-12 13:14:15' as `timestamp_datetime`,
+        '2023-11-12 13:14:15.678' as `timestamp_datetime_ms`,
+        '2023-11-12 13:14:15.6789' as `timestamp_datetime_ms4`,
+        '13:14:15' as `timestamp_time`,
+        null as `null_value`
+)
+
+select
+    {{ pm_utils.to_varchar(pm_utils.to_timestamp('`timestamp_date`')) }} as `timestamp_date`,
+    {{ pm_utils.to_varchar(pm_utils.to_timestamp('`timestamp_datetime`')) }} as `timestamp_datetime`,
+    {{ pm_utils.to_varchar(pm_utils.to_timestamp('`timestamp_datetime_ms`')) }} as `timestamp_datetime_ms`,
+    {{ pm_utils.to_varchar(pm_utils.to_timestamp('`timestamp_datetime_ms4`')) }} as `timestamp_datetime_ms4`,
+    {{ pm_utils.to_varchar(pm_utils.to_timestamp('`timestamp_time`')) }} as `timestamp_time`,
+    {{ pm_utils.to_varchar(pm_utils.to_timestamp('`null_value`')) }} as `null_value`,
+
+    {% if target.type == 'databricks' %}
+        '' as `timestamp_date_expected`,
+        '2023-11-12 13:14:15' as `timestamp_datetime_expected`,
+        '2023-11-12 13:14:15.678' as `timestamp_datetime_ms_expected`,
+        '2023-11-12 13:14:15' as `timestamp_datetime_ms4_expected`,
+        '' as `timestamp_time_expected`,
+        '' as `null_value_expected`
+    {% elif target.type == 'sqlserver' %}
+        --SQL Server uses datetime2 format and always specifies the precision with 7 digits.
+        --SQL Server will also give a result when only having a date or a time as input
+        '2023-11-12 00:00:00.0000000' as `timestamp_date_expected`,
+        '2023-11-12 13:14:15.0000000' as `timestamp_datetime_expected`,
+        '2023-11-12 13:14:15.6780000' as `timestamp_datetime_ms_expected`,
+        '2023-11-12 13:14:15.6789000' as `timestamp_datetime_ms4_expected`,
+        '1900-01-01 13:14:15.0000000' as `timestamp_time_expected`,
+        '' as `null_value_expected`
+    {% elif target.type == 'snowflake' %}
+        '' as `timestamp_date_expected`,
+        '2023-11-12 13:14:15.000' as `timestamp_datetime_expected`,
+        '2023-11-12 13:14:15.678' as `timestamp_datetime_ms_expected`,
+        '2023-11-12 13:14:15.678' as `timestamp_datetime_ms4_expected`,
+        '' as `timestamp_time_expected`,
+        '' as `null_value_expected`
+    {% endif %}
+
+from Input_data