[Bug] unit tests cannot be run if config block includes a call to var()

[AndresVelasco]

Is this a new bug in dbt-core?

• I believe this is a new bug in dbt-core
• I have searched the existing issues, and I could not find an existing issue for this bug

Current Behavior

If the model's config block includes a call to var() as we do in our case to optionally prefix the output schema, unit test always fail with message:
'var' is undefined. This can happen when calling a macro that does not exist.

Also when I tried to define var in unit test overrides

Expected Behavior

Unit test should run normally

Steps To Reproduce

model:

{{ config(materialized='table', schema=var('x', default='')+"DUMMY") }}

select 1 as dummy

yml (unit tests):

unit_tests:
  - name: dummy_test
    model: dummy
    given:
      - input: ref('a')
        format: sql
        rows: |
          SELECT 'a' AS id
    expect:
      format: sql
      rows: |
          SELECT 1 AS dummy

Relevant log output

dbt test --select test_type:unit:


16:48:25  Running with dbt=1.9.1
16:48:26  Registered adapter: bigquery=1.9.0
16:48:26  Unable to do partial parsing because saved manifest not found. Starting full parse.
16:48:29  Found 3 models, 4 data tests, 489 macros, 1 unit test
16:48:29  
16:48:29  Concurrency: 1 threads (target='dev')
16:48:29  
16:48:32  1 of 1 START unit_test dummy::dummy_test ....................................... [RUN]
16:48:32  1 of 1 ERROR dummy::dummy_test ................................................. [ERROR in 0.02s]
16:48:32  
16:48:32  Finished running 1 unit test in 0 hours 0 minutes and 2.89 seconds (2.89s).
16:48:33  
16:48:33  Completed with 1 error, 0 partial successes, and 0 warnings:
16:48:33  
16:48:33    Compilation Error in unit_test dummy_test (models/dummy.yml)
  'var' is undefined. This can happen when calling a macro that does not exist. Check for typos and/or install package dependencies with "dbt deps".
16:48:33  
16:48:33  Done. PASS=0 WARN=0 ERROR=1 SKIP=0 TOTAL=1

Environment

- OS: ubuntu 20.04
- Python: 3.10
- dbt: 1.9.1

Which database adapter are you using with dbt?

bigquery

Additional Context

full test project for reproducing
dbt_test.tar.gz

[dbeatty10]

Thanks for reaching out @AndresVelasco !

This looks the same as #10353, so I'm going to close this as a duplicate.

[AndresVelasco]

This looks like a simple issue @dbeatty10
is its resolution in roadmap already?

[dbeatty10]

@AndresVelasco things can sometimes be much harder than they appear. There's the beginnings of a fix in #10849, and it will take quite a bit more time investment to determine a fix that can be merged. So we don't have estimated time to resolution.

[AndresVelasco]

I understand! thanks for letting me know