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tf_test.py

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+# tf_test  Unit test for Text File manipulations
+import tf
+
+# you should have a medium sized file called 'a' in '/'
+# and free space equivalent to 2x the size of 'a'
+
+def bench():
+  import time
+  a=time.ticks_us()
+  cp('a','b')
+  b=time.ticks_us()
+  print("time to copy={}".format((b-a)/1e6))
+  input("next")  
+
+  a=time.ticks_us()
+  grep('a','kernel')
+  b=time.ticks_us()
+  print("time to grep={}".format((b-a)/1e6))
+  input("next")  
+
+  a=time.ticks_us()
+  sed('a','s/kernel\s*/KERNEL /')
+  b=time.ticks_us()
+  print("time to sed-replace={}".format((b-a)/1e6))
+  input("next")  
+
+  os.remove('a.bak')
+  a=time.ticks_us()
+  cp('b','a')
+  b=time.ticks_us()
+  print("time to copy={}".format((b-a)/1e6))
+  input("next")
+
+  a=time.ticks_us()
+  sed('a','100-130x/(PM|AGP):/')
+  b=time.ticks_us()
+  print("time to sed-extract{}".format((b-a)/1e6))
+  input("next")
+
+  a=time.ticks_us()
+  cat('b', numbers=True)
+  b=time.ticks_us()
+  print("time to cat= {}".format((b-a)/1e6))
+  input("next")
+
+  os.remove('a.bak')
+  cp('b','a')
+
+  a=time.ticks_us()
+  sed('a', '100a!! a line of text!!')
+  b=time.ticks_us()
+  print("time to sed-insert= {}".format((b-a)/1e6))
+
+  os.remove('a.bak')
+
+