add basic tests for buffer module

Author: justinemarie

bessctl/conf/testing/module_tests/buffer.py

@@ -0,0 +1,22 @@
+## CRASH TESTS ##
+buf0 = Buffer() #Buffer takes no parameters
+CRASH_TEST_INPUTS.append([buf0, 1, 1])
+
+## INPUT TESTS ##
+batch_size = 32
+
+buf1 = Buffer()
+test_packet = gen_packet(scapy.TCP, '22.22.22.22', '22.22.22.22')
+test_packet2 = gen_packet(scapy.TCP, '33.22.22.22', '22.22.22.22')
+test_data = []
+
+#Should withhold data until it has a full batch to push through.
+for i in range(batch_size - 1):
+    test_data.append({'input_port' : 0, 'input_packet': test_packet,
+        'output_port' : 0, 'output_packet': None})
+
+test_data.append({'input_port' : 0, 'input_packet': test_packet2,
+        'output_port' : 0, 'output_packet': test_packet})
+
+OUTPUT_TEST_INPUTS.append([buf1, 1, 1, test_data])
+