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41 lines
1.2 KiB
Python
41 lines
1.2 KiB
Python
5 months ago
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#!/usr/bin/env python
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"""Package: mininet
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Test functions defined in mininet.util."""
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import unittest
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from mininet.util import quietRun
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class testQuietRun( unittest.TestCase ):
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"""Test quietRun that runs a command and returns its merged output from
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STDOUT and STDIN"""
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@staticmethod
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def getEchoCmd( n ):
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"Return a command that will print n characters"
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return "echo -n " + "x" * n
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def testEmpty( self ):
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"Run a command that prints nothing"
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output = quietRun(testQuietRun.getEchoCmd( 0 ) )
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self.assertEqual( 0, len( output ) )
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def testOneRead( self ):
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"""Run a command whose output is entirely read on the first call if
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each call reads at most 1024 characters
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"""
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for n in [ 42, 1024 ]:
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output = quietRun( testQuietRun.getEchoCmd( n ) )
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self.assertEqual( n, len( output ) )
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def testMultipleReads( self ):
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"Run a command whose output is not entirely read on the first read"
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for n in [ 1025, 4242 ]:
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output = quietRun(testQuietRun.getEchoCmd( n ) )
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self.assertEqual( n, len( output ) )
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if __name__ == "__main__":
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unittest.main()
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