def testPipeFourNamedCommands(self): #{{{
'''Create pipes between four named commands'''
ls, grep, sed = cmd.name('ls'), cmd.name('grep'), cmd.name('sed')
p = ls(datadir) | grep('a') | grep('ariel') | sed('-e', 's/a/O/g')
res = p().replace('\n', '')
self.assertEqual(res, 'Oriel')
def testPipeTwoNamedCommands(self): #{{{
'''Create pipe between two named commands'''
ls, grep = cmd.name('ls'), cmd.name('grep')
p = ls(datadir) | grep('a')
res = set(n for n in p().replace('\n', ' ').split(' ') if n)
self.assertEqual(res, set(['a', 'ariel']))