1. 为test_paddle_utils添加paddle标签；2.修改test_set_backend测试例适应没有conda的情况

tests/core/utils/test_paddle_utils.py

@@ -64,6 +64,7 @@ class TestPaddleToDevice:
 #
 ############################################################################
 
+@pytest.mark.paddle
 class TestPaddleMoveDataToDevice:
 
     def check_gpu(self, tensor, idx):

tests/envs/test_set_backend.py

@@ -9,10 +9,14 @@ from fastNLP.envs.distributed import rank_zero_rm
 def test_dump_fastnlp_envs():
     filepath = None
     try:
-        with Capturing() as output:
-            dump_fastnlp_backend(backend="torch")
-        filepath = os.path.join(os.path.expanduser('~'), '.fastNLP', 'envs', os.environ['CONDA_DEFAULT_ENV']+'.json')
-        assert filepath in output[0]
-        assert os.path.exists(filepath)
+        if 'CONDA_DEFAULT_ENV' in os.environ:
+            with Capturing() as output:
+                dump_fastnlp_backend(backend="torch")
+            filepath = os.path.join(os.path.expanduser('~'), '.fastNLP', 'envs', os.environ['CONDA_DEFAULT_ENV']+'.json')
+            assert filepath in output[0]
+            assert os.path.exists(filepath)
+        else:
+            with pytest.raises(RuntimeError):
+                dump_fastnlp_backend(backend="torch")
     finally:
         rank_zero_rm(filepath)