add test code for testing action.py

test/core/test_action.py

@@ -0,0 +1,18 @@
+import os
+
+import unittest
+
+from fastNLP.core.action import Action, Batchifier, SequentialSampler
+
+class TestAction(unittest.TestCase):
+    def test_case_1(self):
+        x = [1, 2, 3, 4, 5, 6, 7, 8]
+        y = [1, 1, 1, 1, 2, 2, 2, 2]
+        data = []
+        for i in range(len(x)):
+            data.append([[x[i]], [y[i]]])
+        data = Batchifier(SequentialSampler(data), batch_size=2, drop_last=False)
+        action = Action()
+        for batch_x in action.make_batch(data, use_cuda=False, output_length=True, max_len=None):
+            print(batch_x)
+