diff --git a/tests/core/collators/test_collator.py b/tests/core/collators/test_collator.py
index 2b56624a..ba1e7e08 100644
--- a/tests/core/collators/test_collator.py
+++ b/tests/core/collators/test_collator.py
@@ -1,81 +1,293 @@
+
+import numpy as np
 import pytest
 
-from fastNLP.core.collators import AutoCollator
-from fastNLP.core.collators.collator import _MultiCollator
-from fastNLP.core.dataset import DataSet
+from fastNLP.envs.imports import _NEED_IMPORT_TORCH, _NEED_IMPORT_PADDLE, _NEED_IMPORT_JITTOR
+
+from fastNLP.core.collators.collator import Collator
+
+
+def _assert_equal(d1, d2):
+    try:
+        if 'torch' in str(type(d1)):
+            if 'float64' in str(d2.dtype):
+                print(d2.dtype)
+            assert (d1 == d2).all().item()
+        else:
+            assert all(d1 == d2)
+    except TypeError:
+        assert d1 == d2
+    except ValueError:
+        assert (d1 == d2).all()
+
+
+def findDictDiff(d1, d2, path=""):
+    for k in d1:
+        if k in d2:
+            if isinstance(d1[k], dict):
+                findDictDiff(d1[k], d2[k], "%s -> %s" % (path, k) if path else k)
+            else:
+                _assert_equal(d1[k], d2[k])
+        else:
+            raise RuntimeError("%s%s as key not in d2\n" % ("%s: " % path if path else "", k))
+
+
+def findListDiff(d1, d2):
+    assert len(d1)==len(d2)
+    for _d1, _d2 in zip(d1, d2):
+        if isinstance(_d1, list):
+            findListDiff(_d1, _d2)
+        else:
+            _assert_equal(_d1, _d2)
 
 
 class TestCollator:
 
-    @pytest.mark.parametrize('as_numpy', [True, False])
-    def test_auto_collator(self, as_numpy):
-        """
-        测试auto_collator的auto_pad功能
-
-        :param as_numpy:
-        :return:
-        """
-        dataset = DataSet({'x': [[1, 2], [0, 1, 2, 3], [3], [9, 0, 10, 1, 5]] * 100,
-                           'y': [0, 1, 1, 0] * 100})
-        collator = AutoCollator(as_numpy=as_numpy)
-        collator.set_input('x', 'y')
-        bucket_data = []
-        data = []
-        for i in range(len(dataset)):
-            data.append(dataset[i])
-            if len(data) == 40:
-                bucket_data.append(data)
-                data = []
-        results = []
-        for bucket in bucket_data:
-            res = collator(bucket)
-            assert res['x'].shape == (40, 5)
-            assert res['y'].shape == (40,)
-            results.append(res)
-
-    def test_auto_collator_v1(self):
-        """
-        测试auto_collator的set_pad_val和set_pad_val功能
-
-        :return:
-        """
-        dataset = DataSet({'x': [[1, 2], [0, 1, 2, 3], [3], [9, 0, 10, 1, 5]] * 100,
-                           'y': [0, 1, 1, 0] * 100})
-        collator = AutoCollator(as_numpy=False)
-        collator.set_input('x')
-        collator.set_pad_val('x', val=-1)
-        collator.set_as_numpy(True)
-        bucket_data = []
-        data = []
-        for i in range(len(dataset)):
-            data.append(dataset[i])
-            if len(data) == 40:
-                bucket_data.append(data)
-                data = []
-        for bucket in bucket_data:
-            res = collator(bucket)
-            print(res)
-
-    def test_multicollator(self):
-        """
-        测试multicollator功能
-
-        :return:
-        """
-        dataset = DataSet({'x': [[1, 2], [0, 1, 2, 3], [3], [9, 0, 10, 1, 5]] * 100,
-                           'y': [0, 1, 1, 0] * 100})
-        collator = AutoCollator(as_numpy=False)
-        multi_collator = _MultiCollator(collator)
-        multi_collator.set_as_numpy(as_numpy=True)
-        multi_collator.set_pad_val('x', val=-1)
-        multi_collator.set_input('x')
-        bucket_data = []
-        data = []
-        for i in range(len(dataset)):
-            data.append(dataset[i])
-            if len(data) == 40:
-                bucket_data.append(data)
-                data = []
-        for bucket in bucket_data:
-            res = multi_collator(bucket)
-            print(res)
+    @pytest.mark.torch
+    def test_run(self):
+        dict_batch = [{
+            'str': '1',
+            'lst_str': ['1'],
+            'int': 1,
+            'lst_int': [1],
+            'nest_lst_int': [[1]],
+            'float': 1.1,
+            'lst_float': [1.1],
+            'bool': True,
+            'numpy': np.ones(1),
+            'dict': {'1': '1'},
+            'set': {'1'},
+            'nested_dict': {'a': 1, 'b':[1, 2]}
+        },
+            {
+            'str': '2',
+            'lst_str': ['2', '2'],
+            'int': 2,
+            'lst_int': [1, 2],
+            'nest_lst_int': [[1], [1, 2]],
+            'float': 2.1,
+            'lst_float': [2.1],
+            'bool': False,
+            'numpy': np.zeros(1),
+            'dict': {'1': '2'},
+            'set': {'2'},
+            'nested_dict': {'a': 2, 'b': [1, 2]}
+        }
+        ]
+
+        list_batch = [['1', ['1'], 1, [1], [[1]], 1.1, [1.1], True, np.ones(1), {'1': '1'}, {'1'}],
+                      ['2', ['2', '2'], 2, [2, 2], [[1], [1, 2]], 2.1, [2.1], False, np.ones(2), {'2': '2'}, {'2'}]]
+
+        raw_pad_batch = {'str': ['1', '2'], 'lst_str': [['1'], ['2', '2']], 'int': [1, 2], 'lst_int': [[1, 0], [1, 2]], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]], 'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'a': [1, 2], 'b': [[1, 2], [1, 2]]}}
+        collator = Collator(backend='raw')
+        assert raw_pad_batch == collator(dict_batch)
+        collator = Collator(backend='raw')
+        raw_pad_lst = [['1', '2'], [['1'], ['2', '2']], [1, 2], [[1, 0], [2, 2]], [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
+                       [1.1, 2.1], [[1.1], [2.1]], [True, False], [np.ones(1), np.ones(2)], [{'1': '1'}, {'2': '2'}],
+                       [{'1'}, {'2'}]]
+        findListDiff(raw_pad_lst, collator(list_batch))
+
+        collator = Collator(backend='numpy')
+        numpy_pad_batch = {'str': ['1', '2'], 'lst_str': [['1'], ['2', '2']], 'int': np.array([1, 2]), 'lst_int': np.array([[1, 0], [1, 2]]),
+                           'nest_lst_int': np.array([[[1, 0], [0, 0]], [[1, 0], [1, 2]]]), 'float': np.array([1.1, 2.1]),
+                           'lst_float': np.array([[1.1], [2.1]]), 'bool': np.array([True, False]), 'numpy': np.array([[1], [0]]),
+                           'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'a': np.array([1, 2]),
+                                                                                             'b': np.array([[1, 2], [1, 2]])}}
+
+        findDictDiff(numpy_pad_batch, collator(dict_batch))
+        collator = Collator(backend='numpy')
+        numpy_pad_lst = [['1', '2'], [['1'], ['2', '2']], np.array([1, 2]), np.array([[1, 0], [2, 2]]),
+                         np.array([[[1, 0], [0, 0]], [[1, 0], [1, 2]]]),
+                       np.array([1.1, 2.1]), np.array([[1.1], [2.1]]), np.array([True, False]),
+                         np.array([[1, 0], [1, 1]]), [{'1': '1'}, {'2': '2'}],
+                       [{'1'}, {'2'}]]
+        findListDiff(numpy_pad_lst, collator(list_batch))
+
+        if _NEED_IMPORT_TORCH:
+            import torch
+            collator = Collator(backend='torch')
+            numpy_pad_batch = {'str': ['1', '2'], 'lst_str': [['1'], ['2', '2']], 'int': torch.LongTensor([1, 2]),
+                               'lst_int': torch.LongTensor([[1, 0], [1, 2]]),
+                               'nest_lst_int': torch.LongTensor([[[1, 0], [0, 0]], [[1, 0], [1, 2]]]),
+                               'float': torch.FloatTensor([1.1, 2.1]),
+                               'lst_float': torch.FloatTensor([[1.1], [2.1]]), 'bool': torch.BoolTensor([True, False]),
+                               'numpy': torch.FloatTensor([[1], [0]]),
+                               'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'a': torch.LongTensor([1, 2]),
+                                                                                                 'b': torch.LongTensor(
+                                                                                                     [[1, 2], [1, 2]])}}
+
+            findDictDiff(numpy_pad_batch, collator(dict_batch))
+            collator = Collator(backend='torch')
+            torch_pad_lst = [['1', '2'], [['1'], ['2', '2']], torch.LongTensor([1, 2]), torch.LongTensor([[1, 0], [2, 2]]),
+                             torch.LongTensor([[[1, 0], [0, 0]], [[1, 0], [1, 2]]]),
+                             torch.FloatTensor([1.1, 2.1]), torch.FloatTensor([[1.1], [2.1]]), torch.BoolTensor([True, False]),
+                             torch.LongTensor([[1, 0], [1, 1]]), [{'1': '1'}, {'2': '2'}],
+                             [{'1'}, {'2'}]]
+            findListDiff(torch_pad_lst, collator(list_batch))
+
+    def test_pad(self):
+        dict_batch = [{
+            'str': '1',
+            'lst_str': ['1'],
+            'int': 1,
+            'lst_int': [1],
+            'nest_lst_int': [[1]],
+            'float': 1.1,
+            'lst_float': [1.1],
+            'bool': True,
+            'numpy': np.ones(1),
+            'dict': {'1': '1'},
+            'set': {'1'},
+            'nested_dict': {'a': 1, 'b':[1, 2]}
+        },
+            {
+                'str': '2',
+                'lst_str': ['2', '2'],
+                'int': 2,
+                'lst_int': [1, 2],
+                'nest_lst_int': [[1], [1, 2]],
+                'float': 2.1,
+                'lst_float': [2.1],
+                'bool': False,
+                'numpy': np.zeros(1),
+                'dict': {'1': '2'},
+                'set': {'2'},
+                'nested_dict': {'a': 2, 'b': [1, 2]}
+            }
+        ]
+
+        raw_pad_batch = {'str': ['1', '2'], 'lst_str': [['1'], ['2', '2']], 'int': [1, 2], 'lst_int': [[1, 0], [1, 2]], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]], 'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'a': [1, 2], 'b': [[1, 2], [1, 2]]}}
+
+        # 测试 ignore
+        collator = Collator(backend='raw')
+        collator.set_ignore('str', 'int', 'lst_int', ('nested_dict', 'a'))
+        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]], 'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'b': [[1, 2], [1, 2]]}}
+        findDictDiff(raw_pad_batch, collator(dict_batch))
+
+        # 测试 set_pad
+        collator = Collator(backend='raw')
+        collator.set_pad('str', pad_val=1)
+        with pytest.raises(BaseException):
+            collator(dict_batch)
+
+        # 测试设置 pad 值
+        collator = Collator(backend='raw')
+        collator.set_pad('nest_lst_int', pad_val=100)
+        collator.set_ignore('str', 'int', 'lst_int', ('nested_dict','a'))
+        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 100], [100, 100]], [[1, 100], [1, 2]]],
+                         'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'b': [[1, 2], [1, 2]]}}
+        findDictDiff(raw_pad_batch, collator(dict_batch))
+
+        # 设置 backend 和 type
+        collator.set_pad('float', pad_val=100, backend='numpy', dtype=int)
+        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 100], [100, 100]], [[1, 100], [1, 2]]],
+                         'float': np.array([1, 2]), 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'b': [[1, 2], [1, 2]]}}
+        findDictDiff(raw_pad_batch, collator(dict_batch))
+
+
+        # raw_pad_lst = [['1', '2'], [['1'], ['2', '2']], [1, 2], [[1, 0], [2, 2]], [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
+        #                [1.1, 2.1], [[1.1], [2.1]], [True, False], [np.ones(1), np.ones(2)], [{'1': '1'}, {'2': '2'}],
+        #                [{'1'}, {'2'}]]
+        list_batch = [['1', ['1'], 1, [1], [[1]], 1.1, [1.1], True, np.ones(1), {'1': '1'}, {'1'}],
+                      ['2', ['2', '2'], 2, [2, 2], [[1], [1, 2]], 2.1, [2.1], False, np.ones(2), {'2': '2'}, {'2'}]]
+        collator = Collator(backend='raw')
+        collator.set_ignore('_0', '_3', '_1')
+        collator.set_pad('_4', pad_val=None)
+        raw_pad_lst = [[1, 2], [[[1]], [[1], [1, 2]]],
+                       [1.1, 2.1], [[1.1], [2.1]], [True, False], [np.ones(1), np.ones(2)], [{'1': '1'}, {'2': '2'}],
+                       [{'1'}, {'2'}]]
+        findListDiff(raw_pad_lst, collator(list_batch))
+
+        collator = Collator(backend='raw')
+        collator.set_pad('_0', pad_val=1)
+        with pytest.raises(BaseException):
+            collator(dict_batch)
+
+        list_batch = [['1', ['1'], 1, [1], [[1]], 1.1, [1.1], True, np.ones(1), {'1': '1'}, {'1'}],
+                      ['2', ['2', '2'], 2, [2, 2], [[1], [1, 2]], 2.1, [2.1], False, np.ones(2), {'2': '2'}, {'2'}]]
+        collator = Collator(backend='raw')
+        collator.set_ignore('_0', '_3', '_1')
+        collator.set_pad('_2', backend='numpy')
+        collator.set_pad('_4', backend='numpy', pad_val=100)
+        raw_pad_lst = [np.array([1, 2]), np.array([[[1, 100], [100, 100]], [[1, 100], [1, 2]]]),
+                       [1.1, 2.1], [[1.1], [2.1]], [True, False], [np.ones(1), np.ones(2)], [{'1': '1'}, {'2': '2'}],
+                       [{'1'}, {'2'}]]
+        findListDiff(raw_pad_lst, collator(list_batch))
+
+        # _single
+        collator = Collator()
+        collator.set_pad('_single')
+        findListDiff(list_batch, collator(list_batch))
+
+    def test_nest_ignore(self):
+        dict_batch = [{
+            'str': '1',
+            'lst_str': ['1'],
+            'int': 1,
+            'lst_int': [1],
+            'nest_lst_int': [[1]],
+            'float': 1.1,
+            'lst_float': [1.1],
+            'bool': True,
+            'numpy': np.ones(1),
+            'dict': {'1': '1'},
+            'set': {'1'},
+            'nested_dict': {'int': 1, 'lst_int':[1, 2], 'c': {'int': 1}}
+        },
+            {
+                'str': '2',
+                'lst_str': ['2', '2'],
+                'int': 2,
+                'lst_int': [1, 2],
+                'nest_lst_int': [[1], [1, 2]],
+                'float': 2.1,
+                'lst_float': [2.1],
+                'bool': False,
+                'numpy': np.zeros(1),
+                'dict': {'1': '2'},
+                'set': {'2'},
+                'nested_dict': {'int': 1, 'lst_int': [1, 2], 'c': {'int': 1}}
+            }
+        ]
+        # 测试 ignore
+        collator = Collator(backend='raw')
+        collator.set_ignore('str', 'int', 'lst_int', ('nested_dict', 'int'))
+        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
+                         'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False],
+                         'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']},
+                         'set': [{'1'}, {'2'}], 'nested_dict': {'lst_int': [[1, 2], [1, 2]],
+                                                                'c': {'int':[1, 1]}}}
+        findDictDiff(raw_pad_batch, collator(dict_batch))
+
+        collator = Collator(backend='raw')
+        collator.set_pad(('nested_dict', 'c'), pad_val=None)
+        collator.set_ignore('str', 'int', 'lst_int')
+        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
+                         'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False],
+                         'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']},
+                         'set': [{'1'}, {'2'}], 'nested_dict': {'lst_int': [[1, 2], [1, 2]],
+                                                                'c': [{'int':1}, {'int':1}]}}
+        pad_batch = collator(dict_batch)
+        findDictDiff(raw_pad_batch, pad_batch)
+
+        collator = Collator(backend='raw')
+        collator.set_pad(('nested_dict', 'c'), pad_val=1)
+        with pytest.raises(BaseException):
+            collator(dict_batch)
+
+        collator = Collator(backend='raw')
+        collator.set_ignore('str', 'int', 'lst_int')
+        collator.set_pad(('nested_dict', 'c'), pad_fn=lambda x: [d['int'] for d in x])
+        pad_batch = collator(dict_batch)
+        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
+                         'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False],
+                         'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']},
+                         'set': [{'1'}, {'2'}], 'nested_dict': {'lst_int': [[1, 2], [1, 2]],
+                                                                'c': [1, 1]}}
+        findDictDiff(raw_pad_batch, pad_batch)
+
+
+
+
+
+
diff --git a/tests/core/collators/test_new_collator.py b/tests/core/collators/test_new_collator.py
deleted file mode 100644
index ba1e7e08..00000000
--- a/tests/core/collators/test_new_collator.py
+++ /dev/null
@@ -1,293 +0,0 @@
-
-import numpy as np
-import pytest
-
-from fastNLP.envs.imports import _NEED_IMPORT_TORCH, _NEED_IMPORT_PADDLE, _NEED_IMPORT_JITTOR
-
-from fastNLP.core.collators.collator import Collator
-
-
-def _assert_equal(d1, d2):
-    try:
-        if 'torch' in str(type(d1)):
-            if 'float64' in str(d2.dtype):
-                print(d2.dtype)
-            assert (d1 == d2).all().item()
-        else:
-            assert all(d1 == d2)
-    except TypeError:
-        assert d1 == d2
-    except ValueError:
-        assert (d1 == d2).all()
-
-
-def findDictDiff(d1, d2, path=""):
-    for k in d1:
-        if k in d2:
-            if isinstance(d1[k], dict):
-                findDictDiff(d1[k], d2[k], "%s -> %s" % (path, k) if path else k)
-            else:
-                _assert_equal(d1[k], d2[k])
-        else:
-            raise RuntimeError("%s%s as key not in d2\n" % ("%s: " % path if path else "", k))
-
-
-def findListDiff(d1, d2):
-    assert len(d1)==len(d2)
-    for _d1, _d2 in zip(d1, d2):
-        if isinstance(_d1, list):
-            findListDiff(_d1, _d2)
-        else:
-            _assert_equal(_d1, _d2)
-
-
-class TestCollator:
-
-    @pytest.mark.torch
-    def test_run(self):
-        dict_batch = [{
-            'str': '1',
-            'lst_str': ['1'],
-            'int': 1,
-            'lst_int': [1],
-            'nest_lst_int': [[1]],
-            'float': 1.1,
-            'lst_float': [1.1],
-            'bool': True,
-            'numpy': np.ones(1),
-            'dict': {'1': '1'},
-            'set': {'1'},
-            'nested_dict': {'a': 1, 'b':[1, 2]}
-        },
-            {
-            'str': '2',
-            'lst_str': ['2', '2'],
-            'int': 2,
-            'lst_int': [1, 2],
-            'nest_lst_int': [[1], [1, 2]],
-            'float': 2.1,
-            'lst_float': [2.1],
-            'bool': False,
-            'numpy': np.zeros(1),
-            'dict': {'1': '2'},
-            'set': {'2'},
-            'nested_dict': {'a': 2, 'b': [1, 2]}
-        }
-        ]
-
-        list_batch = [['1', ['1'], 1, [1], [[1]], 1.1, [1.1], True, np.ones(1), {'1': '1'}, {'1'}],
-                      ['2', ['2', '2'], 2, [2, 2], [[1], [1, 2]], 2.1, [2.1], False, np.ones(2), {'2': '2'}, {'2'}]]
-
-        raw_pad_batch = {'str': ['1', '2'], 'lst_str': [['1'], ['2', '2']], 'int': [1, 2], 'lst_int': [[1, 0], [1, 2]], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]], 'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'a': [1, 2], 'b': [[1, 2], [1, 2]]}}
-        collator = Collator(backend='raw')
-        assert raw_pad_batch == collator(dict_batch)
-        collator = Collator(backend='raw')
-        raw_pad_lst = [['1', '2'], [['1'], ['2', '2']], [1, 2], [[1, 0], [2, 2]], [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
-                       [1.1, 2.1], [[1.1], [2.1]], [True, False], [np.ones(1), np.ones(2)], [{'1': '1'}, {'2': '2'}],
-                       [{'1'}, {'2'}]]
-        findListDiff(raw_pad_lst, collator(list_batch))
-
-        collator = Collator(backend='numpy')
-        numpy_pad_batch = {'str': ['1', '2'], 'lst_str': [['1'], ['2', '2']], 'int': np.array([1, 2]), 'lst_int': np.array([[1, 0], [1, 2]]),
-                           'nest_lst_int': np.array([[[1, 0], [0, 0]], [[1, 0], [1, 2]]]), 'float': np.array([1.1, 2.1]),
-                           'lst_float': np.array([[1.1], [2.1]]), 'bool': np.array([True, False]), 'numpy': np.array([[1], [0]]),
-                           'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'a': np.array([1, 2]),
-                                                                                             'b': np.array([[1, 2], [1, 2]])}}
-
-        findDictDiff(numpy_pad_batch, collator(dict_batch))
-        collator = Collator(backend='numpy')
-        numpy_pad_lst = [['1', '2'], [['1'], ['2', '2']], np.array([1, 2]), np.array([[1, 0], [2, 2]]),
-                         np.array([[[1, 0], [0, 0]], [[1, 0], [1, 2]]]),
-                       np.array([1.1, 2.1]), np.array([[1.1], [2.1]]), np.array([True, False]),
-                         np.array([[1, 0], [1, 1]]), [{'1': '1'}, {'2': '2'}],
-                       [{'1'}, {'2'}]]
-        findListDiff(numpy_pad_lst, collator(list_batch))
-
-        if _NEED_IMPORT_TORCH:
-            import torch
-            collator = Collator(backend='torch')
-            numpy_pad_batch = {'str': ['1', '2'], 'lst_str': [['1'], ['2', '2']], 'int': torch.LongTensor([1, 2]),
-                               'lst_int': torch.LongTensor([[1, 0], [1, 2]]),
-                               'nest_lst_int': torch.LongTensor([[[1, 0], [0, 0]], [[1, 0], [1, 2]]]),
-                               'float': torch.FloatTensor([1.1, 2.1]),
-                               'lst_float': torch.FloatTensor([[1.1], [2.1]]), 'bool': torch.BoolTensor([True, False]),
-                               'numpy': torch.FloatTensor([[1], [0]]),
-                               'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'a': torch.LongTensor([1, 2]),
-                                                                                                 'b': torch.LongTensor(
-                                                                                                     [[1, 2], [1, 2]])}}
-
-            findDictDiff(numpy_pad_batch, collator(dict_batch))
-            collator = Collator(backend='torch')
-            torch_pad_lst = [['1', '2'], [['1'], ['2', '2']], torch.LongTensor([1, 2]), torch.LongTensor([[1, 0], [2, 2]]),
-                             torch.LongTensor([[[1, 0], [0, 0]], [[1, 0], [1, 2]]]),
-                             torch.FloatTensor([1.1, 2.1]), torch.FloatTensor([[1.1], [2.1]]), torch.BoolTensor([True, False]),
-                             torch.LongTensor([[1, 0], [1, 1]]), [{'1': '1'}, {'2': '2'}],
-                             [{'1'}, {'2'}]]
-            findListDiff(torch_pad_lst, collator(list_batch))
-
-    def test_pad(self):
-        dict_batch = [{
-            'str': '1',
-            'lst_str': ['1'],
-            'int': 1,
-            'lst_int': [1],
-            'nest_lst_int': [[1]],
-            'float': 1.1,
-            'lst_float': [1.1],
-            'bool': True,
-            'numpy': np.ones(1),
-            'dict': {'1': '1'},
-            'set': {'1'},
-            'nested_dict': {'a': 1, 'b':[1, 2]}
-        },
-            {
-                'str': '2',
-                'lst_str': ['2', '2'],
-                'int': 2,
-                'lst_int': [1, 2],
-                'nest_lst_int': [[1], [1, 2]],
-                'float': 2.1,
-                'lst_float': [2.1],
-                'bool': False,
-                'numpy': np.zeros(1),
-                'dict': {'1': '2'},
-                'set': {'2'},
-                'nested_dict': {'a': 2, 'b': [1, 2]}
-            }
-        ]
-
-        raw_pad_batch = {'str': ['1', '2'], 'lst_str': [['1'], ['2', '2']], 'int': [1, 2], 'lst_int': [[1, 0], [1, 2]], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]], 'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'a': [1, 2], 'b': [[1, 2], [1, 2]]}}
-
-        # 测试 ignore
-        collator = Collator(backend='raw')
-        collator.set_ignore('str', 'int', 'lst_int', ('nested_dict', 'a'))
-        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]], 'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'b': [[1, 2], [1, 2]]}}
-        findDictDiff(raw_pad_batch, collator(dict_batch))
-
-        # 测试 set_pad
-        collator = Collator(backend='raw')
-        collator.set_pad('str', pad_val=1)
-        with pytest.raises(BaseException):
-            collator(dict_batch)
-
-        # 测试设置 pad 值
-        collator = Collator(backend='raw')
-        collator.set_pad('nest_lst_int', pad_val=100)
-        collator.set_ignore('str', 'int', 'lst_int', ('nested_dict','a'))
-        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 100], [100, 100]], [[1, 100], [1, 2]]],
-                         'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'b': [[1, 2], [1, 2]]}}
-        findDictDiff(raw_pad_batch, collator(dict_batch))
-
-        # 设置 backend 和 type
-        collator.set_pad('float', pad_val=100, backend='numpy', dtype=int)
-        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 100], [100, 100]], [[1, 100], [1, 2]]],
-                         'float': np.array([1, 2]), 'lst_float': [[1.1], [2.1]], 'bool': [True, False], 'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']}, 'set': [{'1'}, {'2'}], 'nested_dict': {'b': [[1, 2], [1, 2]]}}
-        findDictDiff(raw_pad_batch, collator(dict_batch))
-
-
-        # raw_pad_lst = [['1', '2'], [['1'], ['2', '2']], [1, 2], [[1, 0], [2, 2]], [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
-        #                [1.1, 2.1], [[1.1], [2.1]], [True, False], [np.ones(1), np.ones(2)], [{'1': '1'}, {'2': '2'}],
-        #                [{'1'}, {'2'}]]
-        list_batch = [['1', ['1'], 1, [1], [[1]], 1.1, [1.1], True, np.ones(1), {'1': '1'}, {'1'}],
-                      ['2', ['2', '2'], 2, [2, 2], [[1], [1, 2]], 2.1, [2.1], False, np.ones(2), {'2': '2'}, {'2'}]]
-        collator = Collator(backend='raw')
-        collator.set_ignore('_0', '_3', '_1')
-        collator.set_pad('_4', pad_val=None)
-        raw_pad_lst = [[1, 2], [[[1]], [[1], [1, 2]]],
-                       [1.1, 2.1], [[1.1], [2.1]], [True, False], [np.ones(1), np.ones(2)], [{'1': '1'}, {'2': '2'}],
-                       [{'1'}, {'2'}]]
-        findListDiff(raw_pad_lst, collator(list_batch))
-
-        collator = Collator(backend='raw')
-        collator.set_pad('_0', pad_val=1)
-        with pytest.raises(BaseException):
-            collator(dict_batch)
-
-        list_batch = [['1', ['1'], 1, [1], [[1]], 1.1, [1.1], True, np.ones(1), {'1': '1'}, {'1'}],
-                      ['2', ['2', '2'], 2, [2, 2], [[1], [1, 2]], 2.1, [2.1], False, np.ones(2), {'2': '2'}, {'2'}]]
-        collator = Collator(backend='raw')
-        collator.set_ignore('_0', '_3', '_1')
-        collator.set_pad('_2', backend='numpy')
-        collator.set_pad('_4', backend='numpy', pad_val=100)
-        raw_pad_lst = [np.array([1, 2]), np.array([[[1, 100], [100, 100]], [[1, 100], [1, 2]]]),
-                       [1.1, 2.1], [[1.1], [2.1]], [True, False], [np.ones(1), np.ones(2)], [{'1': '1'}, {'2': '2'}],
-                       [{'1'}, {'2'}]]
-        findListDiff(raw_pad_lst, collator(list_batch))
-
-        # _single
-        collator = Collator()
-        collator.set_pad('_single')
-        findListDiff(list_batch, collator(list_batch))
-
-    def test_nest_ignore(self):
-        dict_batch = [{
-            'str': '1',
-            'lst_str': ['1'],
-            'int': 1,
-            'lst_int': [1],
-            'nest_lst_int': [[1]],
-            'float': 1.1,
-            'lst_float': [1.1],
-            'bool': True,
-            'numpy': np.ones(1),
-            'dict': {'1': '1'},
-            'set': {'1'},
-            'nested_dict': {'int': 1, 'lst_int':[1, 2], 'c': {'int': 1}}
-        },
-            {
-                'str': '2',
-                'lst_str': ['2', '2'],
-                'int': 2,
-                'lst_int': [1, 2],
-                'nest_lst_int': [[1], [1, 2]],
-                'float': 2.1,
-                'lst_float': [2.1],
-                'bool': False,
-                'numpy': np.zeros(1),
-                'dict': {'1': '2'},
-                'set': {'2'},
-                'nested_dict': {'int': 1, 'lst_int': [1, 2], 'c': {'int': 1}}
-            }
-        ]
-        # 测试 ignore
-        collator = Collator(backend='raw')
-        collator.set_ignore('str', 'int', 'lst_int', ('nested_dict', 'int'))
-        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
-                         'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False],
-                         'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']},
-                         'set': [{'1'}, {'2'}], 'nested_dict': {'lst_int': [[1, 2], [1, 2]],
-                                                                'c': {'int':[1, 1]}}}
-        findDictDiff(raw_pad_batch, collator(dict_batch))
-
-        collator = Collator(backend='raw')
-        collator.set_pad(('nested_dict', 'c'), pad_val=None)
-        collator.set_ignore('str', 'int', 'lst_int')
-        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
-                         'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False],
-                         'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']},
-                         'set': [{'1'}, {'2'}], 'nested_dict': {'lst_int': [[1, 2], [1, 2]],
-                                                                'c': [{'int':1}, {'int':1}]}}
-        pad_batch = collator(dict_batch)
-        findDictDiff(raw_pad_batch, pad_batch)
-
-        collator = Collator(backend='raw')
-        collator.set_pad(('nested_dict', 'c'), pad_val=1)
-        with pytest.raises(BaseException):
-            collator(dict_batch)
-
-        collator = Collator(backend='raw')
-        collator.set_ignore('str', 'int', 'lst_int')
-        collator.set_pad(('nested_dict', 'c'), pad_fn=lambda x: [d['int'] for d in x])
-        pad_batch = collator(dict_batch)
-        raw_pad_batch = {'lst_str': [['1'], ['2', '2']], 'nest_lst_int': [[[1, 0], [0, 0]], [[1, 0], [1, 2]]],
-                         'float': [1.1, 2.1], 'lst_float': [[1.1], [2.1]], 'bool': [True, False],
-                         'numpy': [np.array([1.]), np.array([0.])], 'dict': {'1': ['1', '2']},
-                         'set': [{'1'}, {'2'}], 'nested_dict': {'lst_int': [[1, 2], [1, 2]],
-                                                                'c': [1, 1]}}
-        findDictDiff(raw_pad_batch, pad_batch)
-
-
-
-
-
-