Merge branch 'main' of github.com:huggingface/diffusers

tests/test_modeling_utils.py

@@ -31,6 +31,7 @@ from diffusers import (
     DDIMScheduler,
     DDPMScheduler,
     GLIDESuperResUNetModel,
+    GLIDETextToImageUNetModel,
     LatentDiffusion,
     PNDMScheduler,
     UNetGradTTSModel,
@@ -261,8 +262,6 @@ class GLIDESuperResUNetTests(ModelTesterMixin, unittest.TestCase):
         sizes = (32, 32)
         low_res_size = (4, 4)
 
-        torch_device = "cpu"
-
         noise = torch.randn((batch_size, num_channels // 2) + sizes).to(torch_device)
         low_res = torch.randn((batch_size, 3) + low_res_size).to(torch_device)
         time_step = torch.tensor([10] * noise.shape[0], device=torch_device)
@@ -343,6 +342,100 @@ class GLIDESuperResUNetTests(ModelTesterMixin, unittest.TestCase):
         self.assertTrue(torch.allclose(output_slice, expected_output_slice, atol=1e-3))
 
 
+class GLIDETextToImageUNetModelTests(ModelTesterMixin, unittest.TestCase):
+    model_class = GLIDETextToImageUNetModel
+
+    @property
+    def dummy_input(self):
+        batch_size = 4
+        num_channels = 3
+        sizes = (32, 32)
+        transformer_dim = 32
+        seq_len = 16
+
+        noise = torch.randn((batch_size, num_channels) + sizes).to(torch_device)
+        emb = torch.randn((batch_size, seq_len, transformer_dim)).to(torch_device)
+        time_step = torch.tensor([10] * noise.shape[0], device=torch_device)
+
+        return {"x": noise, "timesteps": time_step, "transformer_out": emb}
+
+    @property
+    def get_input_shape(self):
+        return (3, 32, 32)
+
+    @property
+    def get_output_shape(self):
+        return (6, 32, 32)
+
+    def prepare_init_args_and_inputs_for_common(self):
+        init_dict = {
+            "attention_resolutions": (2,),
+            "channel_mult": (1, 2),
+            "in_channels": 3,
+            "out_channels": 6,
+            "model_channels": 32,
+            "num_head_channels": 8,
+            "num_heads_upsample": 1,
+            "num_res_blocks": 2,
+            "resblock_updown": True,
+            "resolution": 32,
+            "use_scale_shift_norm": True,
+            "transformer_dim": 32,
+        }
+        inputs_dict = self.dummy_input
+        return init_dict, inputs_dict
+
+    def test_output(self):
+        init_dict, inputs_dict = self.prepare_init_args_and_inputs_for_common()
+        model = self.model_class(**init_dict)
+        model.to(torch_device)
+        model.eval()
+
+        with torch.no_grad():
+            output = model(**inputs_dict)
+
+        output, _ = torch.split(output, 3, dim=1)
+
+        self.assertIsNotNone(output)
+        expected_shape = inputs_dict["x"].shape
+        self.assertEqual(output.shape, expected_shape, "Input and output shapes do not match")
+
+    def test_from_pretrained_hub(self):
+        model, loading_info = GLIDETextToImageUNetModel.from_pretrained(
+            "fusing/unet-glide-text2im-dummy", output_loading_info=True
+        )
+        self.assertIsNotNone(model)
+        self.assertEqual(len(loading_info["missing_keys"]), 0)
+
+        model.to(torch_device)
+        image = model(**self.dummy_input)
+
+        assert image is not None, "Make sure output is not None"
+
+    def test_output_pretrained(self):
+        model = GLIDETextToImageUNetModel.from_pretrained("fusing/unet-glide-text2im-dummy")
+
+        torch.manual_seed(0)
+        if torch.cuda.is_available():
+            torch.cuda.manual_seed_all(0)
+
+        noise = torch.randn((1, model.config.in_channels, model.config.resolution, model.config.resolution)).to(
+            torch_device
+        )
+        emb = torch.randn((1, 16, model.config.transformer_dim)).to(torch_device)
+        time_step = torch.tensor([10] * noise.shape[0], device=torch_device)
+
+        with torch.no_grad():
+            output = model(noise, time_step, emb)
+
+        output, _ = torch.split(output, 3, dim=1)
+        output_slice = output[0, -1, -3:, -3:].flatten()
+        # fmt: off
+        expected_output_slice = torch.tensor([  2.7766, -10.3558, -14.9149,  -0.9376, -14.9175, -17.7679,  -5.5565, -12.9521, -12.9845])
+        # fmt: on
+        self.assertTrue(torch.allclose(output_slice, expected_output_slice, atol=1e-3))
+
+
 class UNetLDMModelTests(ModelTesterMixin, unittest.TestCase):
     model_class = UNetLDMModel