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tests/repo_utils/modular/test_conversion_order.py

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+import os
+import sys
+import unittest
+
+
+ROOT_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.dirname(__file__))))
+sys.path.append(os.path.join(ROOT_DIR, "utils"))
+
+import create_dependency_mapping  # noqa: E402
+
+
+# This is equivalent to `all` in the current library state (as of 09/01/2025)
+MODEL_ROOT = os.path.join("src", "transformers", "models")
+FILES_TO_PARSE = [
+    os.path.join(MODEL_ROOT, "starcoder2", "modular_starcoder2.py"),
+    os.path.join(MODEL_ROOT, "gemma", "modular_gemma.py"),
+    os.path.join(MODEL_ROOT, "olmo2", "modular_olmo2.py"),
+    os.path.join(MODEL_ROOT, "diffllama", "modular_diffllama.py"),
+    os.path.join(MODEL_ROOT, "granite", "modular_granite.py"),
+    os.path.join(MODEL_ROOT, "gemma2", "modular_gemma2.py"),
+    os.path.join(MODEL_ROOT, "mixtral", "modular_mixtral.py"),
+    os.path.join(MODEL_ROOT, "olmo", "modular_olmo.py"),
+    os.path.join(MODEL_ROOT, "rt_detr", "modular_rt_detr.py"),
+    os.path.join(MODEL_ROOT, "qwen2", "modular_qwen2.py"),
+    os.path.join(MODEL_ROOT, "qwen3", "modular_qwen3.py"),
+    os.path.join(MODEL_ROOT, "llava_next_video", "modular_llava_next_video.py"),
+    os.path.join(MODEL_ROOT, "cohere2", "modular_cohere2.py"),
+    os.path.join(MODEL_ROOT, "modernbert", "modular_modernbert.py"),
+    os.path.join(MODEL_ROOT, "colpali", "modular_colpali.py"),
+    os.path.join(MODEL_ROOT, "deformable_detr", "modular_deformable_detr.py"),
+    os.path.join(MODEL_ROOT, "aria", "modular_aria.py"),
+    os.path.join(MODEL_ROOT, "ijepa", "modular_ijepa.py"),
+    os.path.join(MODEL_ROOT, "bamba", "modular_bamba.py"),
+    os.path.join(MODEL_ROOT, "dinov2_with_registers", "modular_dinov2_with_registers.py"),
+    os.path.join(MODEL_ROOT, "instructblipvideo", "modular_instructblipvideo.py"),
+    os.path.join(MODEL_ROOT, "glm", "modular_glm.py"),
+    os.path.join(MODEL_ROOT, "phi", "modular_phi.py"),
+    os.path.join(MODEL_ROOT, "mistral", "modular_mistral.py"),
+    os.path.join(MODEL_ROOT, "phi3", "modular_phi3.py"),
+    os.path.join(MODEL_ROOT, "cohere", "modular_cohere.py"),
+    os.path.join(MODEL_ROOT, "glm4", "modular_glm4.py"),
+    os.path.join(MODEL_ROOT, "seed_oss", "modular_seed_oss.py"),
+]
+
+
+def appear_after(model1: str, model2: str, priority_list: list[list[str]]) -> bool:
+    """Return True if `model1` appear after `model2` in `priority_list`."""
+    model1_index, model2_index = None, None
+    for i, level in enumerate(priority_list):
+        if model1 in level:
+            model1_index = i
+        if model2 in level:
+            model2_index = i
+    if model1_index is None or model2_index is None:
+        raise ValueError(f"Model {model1} or {model2} not found in {priority_list}")
+    return model1_index > model2_index
+
+
+class ConversionOrderTest(unittest.TestCase):
+    def test_conversion_order(self):
+        # Find the order
+        priority_list, _ = create_dependency_mapping.find_priority_list(FILES_TO_PARSE)
+        # Extract just the model names (list of lists)
+        model_priority_list = [[file.split("/")[-2] for file in level] for level in priority_list]
+
+        # These are based on what the current library order should be (as of 09/01/2025)
+        self.assertTrue(appear_after("mixtral", "mistral", model_priority_list))
+        self.assertTrue(appear_after("gemma2", "gemma", model_priority_list))
+        self.assertTrue(appear_after("starcoder2", "mistral", model_priority_list))
+        self.assertTrue(appear_after("olmo2", "olmo", model_priority_list))
+        self.assertTrue(appear_after("diffllama", "mistral", model_priority_list))
+        self.assertTrue(appear_after("cohere2", "gemma2", model_priority_list))
+        self.assertTrue(appear_after("cohere2", "cohere", model_priority_list))
+        self.assertTrue(appear_after("phi3", "mistral", model_priority_list))
+        self.assertTrue(appear_after("glm4", "glm", model_priority_list))