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diffusers/tests/models/transformers/test_models_transformer_ltx.py
Dhruv Nair 7aa6af1138 [Refactor] Move testing utils out of src (#12238)
* update

* update

* update

* update

* update

* merge main

* Revert "merge main"

This reverts commit 65efbcead5.
2025-08-28 19:53:02 +05:30

91 lines
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Python

# coding=utf-8
# Copyright 2025 HuggingFace Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import unittest
import torch
from diffusers import LTXVideoTransformer3DModel
from ...testing_utils import enable_full_determinism, torch_device
from ..test_modeling_common import ModelTesterMixin, TorchCompileTesterMixin
enable_full_determinism()
class LTXTransformerTests(ModelTesterMixin, unittest.TestCase):
model_class = LTXVideoTransformer3DModel
main_input_name = "hidden_states"
uses_custom_attn_processor = True
@property
def dummy_input(self):
batch_size = 2
num_channels = 4
num_frames = 2
height = 16
width = 16
embedding_dim = 16
sequence_length = 16
hidden_states = torch.randn((batch_size, num_frames * height * width, num_channels)).to(torch_device)
encoder_hidden_states = torch.randn((batch_size, sequence_length, embedding_dim)).to(torch_device)
encoder_attention_mask = torch.ones((batch_size, sequence_length)).bool().to(torch_device)
timestep = torch.randint(0, 1000, size=(batch_size,)).to(torch_device)
return {
"hidden_states": hidden_states,
"encoder_hidden_states": encoder_hidden_states,
"timestep": timestep,
"encoder_attention_mask": encoder_attention_mask,
"num_frames": num_frames,
"height": height,
"width": width,
}
@property
def input_shape(self):
return (512, 4)
@property
def output_shape(self):
return (512, 4)
def prepare_init_args_and_inputs_for_common(self):
init_dict = {
"in_channels": 4,
"out_channels": 4,
"num_attention_heads": 2,
"attention_head_dim": 8,
"cross_attention_dim": 16,
"num_layers": 1,
"qk_norm": "rms_norm_across_heads",
"caption_channels": 16,
}
inputs_dict = self.dummy_input
return init_dict, inputs_dict
def test_gradient_checkpointing_is_applied(self):
expected_set = {"LTXVideoTransformer3DModel"}
super().test_gradient_checkpointing_is_applied(expected_set=expected_set)
class LTXTransformerCompileTests(TorchCompileTesterMixin, unittest.TestCase):
model_class = LTXVideoTransformer3DModel
def prepare_init_args_and_inputs_for_common(self):
return LTXTransformerTests().prepare_init_args_and_inputs_for_common()