add helper to verify the correct model output file exists (#2245)

* add helper to verify the correct model output file exists

* more checks using helper

* chore: lint

* fix import and relora model check

* workaround for trl trainer saves

* remove stray print

tests/e2e/patched/test_fa_xentropy.py

@@ -4,7 +4,6 @@ E2E tests for lora llama
 
 import logging
 import os
-from pathlib import Path
 
 import pytest
 from transformers.utils import is_torch_bf16_gpu_available
@@ -15,7 +14,7 @@ from axolotl.train import train
 from axolotl.utils.config import normalize_config
 from axolotl.utils.dict import DictDefault
 
-from ..utils import check_tensorboard
+from ..utils import check_model_output_exists, check_tensorboard
 
 LOG = logging.getLogger("axolotl.tests.e2e")
 os.environ["WANDB_DISABLED"] = "true"
@@ -82,7 +81,7 @@ class TestFAXentropyLlama:
         dataset_meta = load_datasets(cfg=cfg, cli_args=cli_args)
 
         train(cfg=cfg, cli_args=cli_args, dataset_meta=dataset_meta)
-        assert (Path(temp_dir) / "adapter_model.bin").exists()
+        check_model_output_exists(temp_dir, cfg)
 
         check_tensorboard(
             temp_dir + "/runs", "train/train_loss", 1.5, "Train Loss is too high"