add the workflow test

tests/test_workflow.py

@@ -0,0 +1,37 @@
+import sys
+import os
+sys.path.append("..")
+from workflow import workflow
+from visualizer import *
+
+case_file = "../conf/cases.conf"
+case_old = ""
+case_new = "fiorbd          40                 10G        seqwrite             64k                      64             300             300          fiorbd             rbd        4osd    restart"
+dest_dir = '/mnt/data'
+path = 'summary_excel'
+
+def run():
+    if os.path.exists(case_file):
+        f_read =  open(case_file, 'r')
+        case_old = f_read.read()
+        f_read.close()
+
+        f_write = open(case_file, 'w')
+        f_write.write(case_new)
+        f_write.close()
+
+        file_list_old = os.listdir(dest_dir)
+        workflow.main([])
+        file_list_new = os.listdir(dest_dir)
+        for l in file_list_old:
+            file_list_new.remove(l)
+        cmd = ['--dest_dir', '%s/' % (dest_dir), '--type','filestore','--path']
+        cmd.extend(file_list_new)
+        excel_summary_generator.main(cmd)
+
+        f_write = open(case_file, 'w')
+        f_write.write(case_old)
+        f_write.close()
+
+if __name__ == '__main__':
+    run()