diff --git a/tests/models/transformers/test_models_transformer_sana.py b/tests/models/transformers/test_models_transformer_sana.py
index 2e316c3aedc1..8721a9facb90 100644
--- a/tests/models/transformers/test_models_transformer_sana.py
+++ b/tests/models/transformers/test_models_transformer_sana.py
@@ -1,3 +1,4 @@
+# coding=utf-8
 # Copyright 2025 HuggingFace Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,57 +13,58 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import unittest
-
 import torch
 
 from diffusers import SanaTransformer2DModel
+from diffusers.utils.torch_utils import randn_tensor
 
-from ...testing_utils import (
-    enable_full_determinism,
-    torch_device,
+from ...testing_utils import enable_full_determinism, torch_device
+from ..testing_utils import (
+    AttentionTesterMixin,
+    BaseModelTesterConfig,
+    BitsAndBytesTesterMixin,
+    MemoryTesterMixin,
+    ModelTesterMixin,
+    TorchAoTesterMixin,
+    TorchCompileTesterMixin,
+    TrainingTesterMixin,
 )
-from ..test_modeling_common import ModelTesterMixin
 
 
 enable_full_determinism()
 
 
-class SanaTransformerTests(ModelTesterMixin, unittest.TestCase):
-    model_class = SanaTransformer2DModel
-    main_input_name = "hidden_states"
-    uses_custom_attn_processor = True
-    model_split_percents = [0.7, 0.7, 0.9]
+class SanaTransformer2DTesterConfig(BaseModelTesterConfig):
+    @property
+    def model_class(self):
+        return SanaTransformer2DModel
 
     @property
-    def dummy_input(self):
-        batch_size = 2
-        num_channels = 4
-        height = 32
-        width = 32
-        embedding_dim = 8
-        sequence_length = 8
+    def output_shape(self) -> tuple[int, ...]:
+        return (4, 32, 32)
+
+    @property
+    def input_shape(self) -> tuple[int, ...]:
+        return (4, 32, 32)
 
-        hidden_states = torch.randn((batch_size, num_channels, height, width)).to(torch_device)
-        encoder_hidden_states = torch.randn((batch_size, sequence_length, embedding_dim)).to(torch_device)
-        timestep = torch.randint(0, 1000, size=(batch_size,)).to(torch_device)
+    @property
+    def main_input_name(self) -> str:
+        return "hidden_states"
 
-        return {
-            "hidden_states": hidden_states,
-            "encoder_hidden_states": encoder_hidden_states,
-            "timestep": timestep,
-        }
+    @property
+    def uses_custom_attn_processor(self) -> bool:
+        return True
 
     @property
-    def input_shape(self):
-        return (4, 32, 32)
+    def model_split_percents(self) -> list:
+        return [0.7, 0.7, 0.9]
 
     @property
-    def output_shape(self):
-        return (4, 32, 32)
+    def generator(self):
+        return torch.Generator("cpu").manual_seed(0)
 
-    def prepare_init_args_and_inputs_for_common(self):
-        init_dict = {
+    def get_init_dict(self) -> dict[str, int | list[int] | tuple | str | bool]:
+        return {
             "patch_size": 1,
             "in_channels": 4,
             "out_channels": 4,
@@ -75,9 +77,53 @@ def prepare_init_args_and_inputs_for_common(self):
             "caption_channels": 8,
             "sample_size": 32,
         }
-        inputs_dict = self.dummy_input
-        return init_dict, inputs_dict
+
+    def get_dummy_inputs(self) -> dict[str, torch.Tensor]:
+        batch_size = 2
+        num_channels = 4
+        height = 32
+        width = 32
+        embedding_dim = 8
+        sequence_length = 8
+
+        return {
+            "hidden_states": randn_tensor(
+                (batch_size, num_channels, height, width), generator=self.generator, device=torch_device
+            ),
+            "encoder_hidden_states": randn_tensor(
+                (batch_size, sequence_length, embedding_dim), generator=self.generator, device=torch_device
+            ),
+            "timestep": torch.randint(0, 1000, size=(batch_size,)).to(torch_device),
+        }
+
+
+class TestSanaTransformer2D(SanaTransformer2DTesterConfig, ModelTesterMixin):
+    """Core model tests for Sana Transformer 2D."""
+
+
+class TestSanaTransformer2DMemory(SanaTransformer2DTesterConfig, MemoryTesterMixin):
+    """Memory optimization tests for Sana Transformer 2D."""
+
+
+class TestSanaTransformer2DTraining(SanaTransformer2DTesterConfig, TrainingTesterMixin):
+    """Training tests for Sana Transformer 2D."""
 
     def test_gradient_checkpointing_is_applied(self):
         expected_set = {"SanaTransformer2DModel"}
         super().test_gradient_checkpointing_is_applied(expected_set=expected_set)
+
+
+class TestSanaTransformer2DAttention(SanaTransformer2DTesterConfig, AttentionTesterMixin):
+    """Attention processor tests for Sana Transformer 2D."""
+
+
+class TestSanaTransformer2DCompile(SanaTransformer2DTesterConfig, TorchCompileTesterMixin):
+    """Torch compile tests for Sana Transformer 2D."""
+
+
+class TestSanaTransformer2DBitsAndBytes(SanaTransformer2DTesterConfig, BitsAndBytesTesterMixin):
+    """BitsAndBytes quantization tests for Sana Transformer 2D."""
+
+
+class TestSanaTransformer2DTorchAo(SanaTransformer2DTesterConfig, TorchAoTesterMixin):
+    """TorchAO quantization tests for Sana Transformer 2D."""
diff --git a/tests/models/transformers/test_models_transformer_sana_video.py b/tests/models/transformers/test_models_transformer_sana_video.py
index ff564ed8918d..4317f0319fb3 100644
--- a/tests/models/transformers/test_models_transformer_sana_video.py
+++ b/tests/models/transformers/test_models_transformer_sana_video.py
@@ -1,3 +1,4 @@
+# coding=utf-8
 # Copyright 2025 HuggingFace Inc.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
@@ -12,57 +13,54 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-import unittest
-
 import torch
 
 from diffusers import SanaVideoTransformer3DModel
-
-from ...testing_utils import (
-    enable_full_determinism,
-    torch_device,
+from diffusers.utils.torch_utils import randn_tensor
+
+from ...testing_utils import enable_full_determinism, torch_device
+from ..testing_utils import (
+    AttentionTesterMixin,
+    BaseModelTesterConfig,
+    BitsAndBytesTesterMixin,
+    MemoryTesterMixin,
+    ModelTesterMixin,
+    TorchAoTesterMixin,
+    TorchCompileTesterMixin,
+    TrainingTesterMixin,
 )
-from ..test_modeling_common import ModelTesterMixin, TorchCompileTesterMixin
 
 
 enable_full_determinism()
 
 
-class SanaVideoTransformer3DTests(ModelTesterMixin, unittest.TestCase):
-    model_class = SanaVideoTransformer3DModel
-    main_input_name = "hidden_states"
-    uses_custom_attn_processor = True
+class SanaVideoTransformer3DTesterConfig(BaseModelTesterConfig):
+    @property
+    def model_class(self):
+        return SanaVideoTransformer3DModel
 
     @property
-    def dummy_input(self):
-        batch_size = 1
-        num_channels = 16
-        num_frames = 2
-        height = 16
-        width = 16
-        text_encoder_embedding_dim = 16
-        sequence_length = 12
+    def output_shape(self) -> tuple[int, ...]:
+        return (16, 2, 16, 16)
 
-        hidden_states = torch.randn((batch_size, num_channels, num_frames, height, width)).to(torch_device)
-        timestep = torch.randint(0, 1000, size=(batch_size,)).to(torch_device)
-        encoder_hidden_states = torch.randn((batch_size, sequence_length, text_encoder_embedding_dim)).to(torch_device)
+    @property
+    def input_shape(self) -> tuple[int, ...]:
+        return (16, 2, 16, 16)
 
-        return {
-            "hidden_states": hidden_states,
-            "encoder_hidden_states": encoder_hidden_states,
-            "timestep": timestep,
-        }
+    @property
+    def main_input_name(self) -> str:
+        return "hidden_states"
 
     @property
-    def input_shape(self):
-        return (16, 2, 16, 16)
+    def uses_custom_attn_processor(self) -> bool:
+        return True
 
     @property
-    def output_shape(self):
-        return (16, 2, 16, 16)
+    def generator(self):
+        return torch.Generator("cpu").manual_seed(0)
 
-    def prepare_init_args_and_inputs_for_common(self):
-        init_dict = {
+    def get_init_dict(self) -> dict[str, int | float | list[int] | tuple | str | bool]:
+        return {
             "in_channels": 16,
             "out_channels": 16,
             "num_attention_heads": 2,
@@ -82,16 +80,56 @@ def prepare_init_args_and_inputs_for_common(self):
             "qk_norm": "rms_norm_across_heads",
             "rope_max_seq_len": 32,
         }
-        inputs_dict = self.dummy_input
-        return init_dict, inputs_dict
+
+    def get_dummy_inputs(self) -> dict[str, torch.Tensor]:
+        batch_size = 1
+        num_channels = 16
+        num_frames = 2
+        height = 16
+        width = 16
+        text_encoder_embedding_dim = 16
+        sequence_length = 12
+
+        return {
+            "hidden_states": randn_tensor(
+                (batch_size, num_channels, num_frames, height, width), generator=self.generator, device=torch_device
+            ),
+            "encoder_hidden_states": randn_tensor(
+                (batch_size, sequence_length, text_encoder_embedding_dim),
+                generator=self.generator,
+                device=torch_device,
+            ),
+            "timestep": torch.randint(0, 1000, size=(batch_size,)).to(torch_device),
+        }
+
+
+class TestSanaVideoTransformer3D(SanaVideoTransformer3DTesterConfig, ModelTesterMixin):
+    """Core model tests for Sana Video Transformer 3D."""
+
+
+class TestSanaVideoTransformer3DMemory(SanaVideoTransformer3DTesterConfig, MemoryTesterMixin):
+    """Memory optimization tests for Sana Video Transformer 3D."""
+
+
+class TestSanaVideoTransformer3DTraining(SanaVideoTransformer3DTesterConfig, TrainingTesterMixin):
+    """Training tests for Sana Video Transformer 3D."""
 
     def test_gradient_checkpointing_is_applied(self):
         expected_set = {"SanaVideoTransformer3DModel"}
         super().test_gradient_checkpointing_is_applied(expected_set=expected_set)
 
 
-class SanaVideoTransformerCompileTests(TorchCompileTesterMixin, unittest.TestCase):
-    model_class = SanaVideoTransformer3DModel
+class TestSanaVideoTransformer3DAttention(SanaVideoTransformer3DTesterConfig, AttentionTesterMixin):
+    """Attention processor tests for Sana Video Transformer 3D."""
+
+
+class TestSanaVideoTransformer3DCompile(SanaVideoTransformer3DTesterConfig, TorchCompileTesterMixin):
+    """Torch compile tests for Sana Video Transformer 3D."""
+
+
+class TestSanaVideoTransformer3DBitsAndBytes(SanaVideoTransformer3DTesterConfig, BitsAndBytesTesterMixin):
+    """BitsAndBytes quantization tests for Sana Video Transformer 3D."""
+
 
-    def prepare_init_args_and_inputs_for_common(self):
-        return SanaVideoTransformer3DTests().prepare_init_args_and_inputs_for_common()
+class TestSanaVideoTransformer3DTorchAo(SanaVideoTransformer3DTesterConfig, TorchAoTesterMixin):
+    """TorchAO quantization tests for Sana Video Transformer 3D."""