[tests] add compile + offload tests for GGUF. (#11740)

* add compile + offload tests for GGUF.

* quality

* add init.

* prop.

* change to flux.

---------
Co-authored-by: Dhruv Nair <dhruv.nair@gmail.com>

tests/quantization/gguf/test_gguf.py

@@ -8,6 +8,7 @@ import torch.nn as nn
 from diffusers import (
     AuraFlowPipeline,
     AuraFlowTransformer2DModel,
+    DiffusionPipeline,
     FluxControlPipeline,
     FluxPipeline,
     FluxTransformer2DModel,
@@ -32,9 +33,12 @@ from diffusers.utils.testing_utils import (
     require_big_accelerator,
     require_gguf_version_greater_or_equal,
     require_peft_backend,
+    require_torch_version_greater,
     torch_device,
 )
 
+from ..test_torch_compile_utils import QuantCompileTests
+
 
 if is_gguf_available():
     from diffusers.quantizers.gguf.utils import GGUFLinear, GGUFParameter
@@ -647,3 +651,31 @@ class WanVACEGGUFSingleFileTests(GGUFSingleFileTesterMixin, unittest.TestCase):
             ).to(torch_device, self.torch_dtype),
             "timestep": torch.tensor([1]).to(torch_device, self.torch_dtype),
         }
+
+
+@require_torch_version_greater("2.7.1")
+class GGUFCompileTests(QuantCompileTests):
+    torch_dtype = torch.bfloat16
+    gguf_ckpt = "https://huggingface.co/city96/FLUX.1-dev-gguf/blob/main/flux1-dev-Q2_K.gguf"
+
+    @property
+    def quantization_config(self):
+        return GGUFQuantizationConfig(compute_dtype=self.torch_dtype)
+
+    def test_torch_compile(self):
+        super()._test_torch_compile(quantization_config=self.quantization_config)
+
+    def test_torch_compile_with_cpu_offload(self):
+        super()._test_torch_compile_with_cpu_offload(quantization_config=self.quantization_config)
+
+    def test_torch_compile_with_group_offload_leaf(self):
+        super()._test_torch_compile_with_group_offload_leaf(quantization_config=self.quantization_config)
+
+    def _init_pipeline(self, *args, **kwargs):
+        transformer = FluxTransformer2DModel.from_single_file(
+            self.gguf_ckpt, quantization_config=self.quantization_config, torch_dtype=self.torch_dtype
+        )
+        pipe = DiffusionPipeline.from_pretrained(
+            "black-forest-labs/FLUX.1-dev", transformer=transformer, torch_dtype=self.torch_dtype
+        )
+        return pipe