What this PR does / why we need it?
According to issue
https://github.com/vllm-project/vllm-ascend/issues/1298 , this pull
request adds unit test code for schedule_config.py.
Does this PR introduce any user-facing change?
No
How was this patch tested?
CI passed with new added/existing test.
- vLLM version: v0.9.2
- vLLM main:
8d0a01a5f2