adapt parse test for Snowflake edge case - there Integer type is repl…

…aced by Decimal

test/Table_Tests/src/Common_Table_Operations/Conversion_Spec.enso

@@ -567,8 +567,15 @@ add_conversion_specs suite_builder setup =
             setup.expect_integer_type c2
             c2.to_vector . should_equal v
 
+            # Testing that `parse` on a column that already has the right type also works (no-op).
             t2 = table_builder [["X", v]]
-            c3 = t2.parse ["X"] Value_Type.Integer . at "X"
+            ## On most backends, existing_type will be Integer,
+               but e.g. on Snowflake it will be Decimal, so to make this test universal
+               we need to set the actual type as target for parse.
+            existing_type = t2.at "X" . value_type
+            setup.expect_integer_type existing_type
+
+            c3 = t2.parse ["X"] existing_type . at "X"
             setup.expect_integer_type c3
             c3.to_vector . should_equal v