完善测试例的import

tests/core/dataloaders/paddle_dataloader/test_fdl.py

@@ -7,6 +7,8 @@ from fastNLP.envs.imports import _NEED_IMPORT_PADDLE
 if _NEED_IMPORT_PADDLE:
     from paddle.io import Dataset, DataLoader
     import paddle
+else:
+    from fastNLP.core.utils.dummy_class import DummyClass as Dataset
 
 
 class RandomDataset(Dataset):

tests/helpers/datasets/paddle_data.py

@@ -4,6 +4,8 @@ from fastNLP.envs.imports import _NEED_IMPORT_PADDLE
 if _NEED_IMPORT_PADDLE:
     import paddle
     from paddle.io import Dataset
+else:
+    from fastNLP.core.utils.dummy_class import DummyClass as Dataset
 
 
 class PaddleNormalDataset(Dataset):

tests/helpers/models/paddle_model.py

@@ -2,8 +2,11 @@ from fastNLP.envs.imports import _NEED_IMPORT_PADDLE
 if _NEED_IMPORT_PADDLE:
     import paddle
     import paddle.nn as nn
+    from paddle.nn import Layer
+else:
+    from fastNLP.core.utils.dummy_class import DummyClass as Layer
 
-class PaddleNormalModel_Classification_1(paddle.nn.Layer):
+class PaddleNormalModel_Classification_1(Layer):
     """
     基础的paddle分类模型
     """
@@ -34,7 +37,7 @@ class PaddleNormalModel_Classification_1(paddle.nn.Layer):
         return {"pred": x, "target": y.reshape((-1,))}
 
 
-class PaddleNormalModel_Classification_2(paddle.nn.Layer):
+class PaddleNormalModel_Classification_2(Layer):
     """
     基础的paddle分类模型，只实现 forward 函数测试用户自己初始化了分布式的场景
     """