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209 lines
6.7 KiB
209 lines
6.7 KiB
3 years ago
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import pipes
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import os
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import string
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import unittest
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import shutil
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from test.support import reap_children, unix_shell
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from test.support.os_helper import TESTFN, unlink
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if os.name != 'posix':
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raise unittest.SkipTest('pipes module only works on posix')
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if not (unix_shell and os.path.exists(unix_shell)):
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raise unittest.SkipTest('pipes module requires a shell')
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TESTFN2 = TESTFN + "2"
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# tr a-z A-Z is not portable, so make the ranges explicit
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s_command = 'tr %s %s' % (string.ascii_lowercase, string.ascii_uppercase)
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class SimplePipeTests(unittest.TestCase):
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def tearDown(self):
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for f in (TESTFN, TESTFN2):
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unlink(f)
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def testSimplePipe1(self):
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if shutil.which('tr') is None:
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self.skipTest('tr is not available')
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t = pipes.Template()
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t.append(s_command, pipes.STDIN_STDOUT)
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with t.open(TESTFN, 'w') as f:
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f.write('hello world #1')
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with open(TESTFN) as f:
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self.assertEqual(f.read(), 'HELLO WORLD #1')
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def testSimplePipe2(self):
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if shutil.which('tr') is None:
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self.skipTest('tr is not available')
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with open(TESTFN, 'w') as f:
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f.write('hello world #2')
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t = pipes.Template()
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t.append(s_command + ' < $IN > $OUT', pipes.FILEIN_FILEOUT)
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t.copy(TESTFN, TESTFN2)
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with open(TESTFN2) as f:
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self.assertEqual(f.read(), 'HELLO WORLD #2')
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def testSimplePipe3(self):
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if shutil.which('tr') is None:
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self.skipTest('tr is not available')
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with open(TESTFN, 'w') as f:
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f.write('hello world #2')
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t = pipes.Template()
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t.append(s_command + ' < $IN', pipes.FILEIN_STDOUT)
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f = t.open(TESTFN, 'r')
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try:
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self.assertEqual(f.read(), 'HELLO WORLD #2')
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finally:
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f.close()
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def testEmptyPipeline1(self):
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# copy through empty pipe
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d = 'empty pipeline test COPY'
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with open(TESTFN, 'w') as f:
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f.write(d)
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with open(TESTFN2, 'w') as f:
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f.write('')
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t=pipes.Template()
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t.copy(TESTFN, TESTFN2)
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with open(TESTFN2) as f:
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self.assertEqual(f.read(), d)
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def testEmptyPipeline2(self):
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# read through empty pipe
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d = 'empty pipeline test READ'
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with open(TESTFN, 'w') as f:
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f.write(d)
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t=pipes.Template()
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f = t.open(TESTFN, 'r')
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try:
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self.assertEqual(f.read(), d)
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finally:
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f.close()
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def testEmptyPipeline3(self):
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# write through empty pipe
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d = 'empty pipeline test WRITE'
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t = pipes.Template()
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with t.open(TESTFN, 'w') as f:
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f.write(d)
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with open(TESTFN) as f:
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self.assertEqual(f.read(), d)
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def testRepr(self):
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t = pipes.Template()
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self.assertEqual(repr(t), "<Template instance, steps=[]>")
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t.append('tr a-z A-Z', pipes.STDIN_STDOUT)
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self.assertEqual(repr(t),
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"<Template instance, steps=[('tr a-z A-Z', '--')]>")
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def testSetDebug(self):
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t = pipes.Template()
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t.debug(False)
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self.assertEqual(t.debugging, False)
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t.debug(True)
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self.assertEqual(t.debugging, True)
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def testReadOpenSink(self):
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# check calling open('r') on a pipe ending with
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# a sink raises ValueError
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t = pipes.Template()
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t.append('boguscmd', pipes.SINK)
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self.assertRaises(ValueError, t.open, 'bogusfile', 'r')
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def testWriteOpenSource(self):
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# check calling open('w') on a pipe ending with
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# a source raises ValueError
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t = pipes.Template()
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t.prepend('boguscmd', pipes.SOURCE)
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self.assertRaises(ValueError, t.open, 'bogusfile', 'w')
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def testBadAppendOptions(self):
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t = pipes.Template()
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# try a non-string command
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self.assertRaises(TypeError, t.append, 7, pipes.STDIN_STDOUT)
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# try a type that isn't recognized
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self.assertRaises(ValueError, t.append, 'boguscmd', 'xx')
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# shouldn't be able to append a source
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self.assertRaises(ValueError, t.append, 'boguscmd', pipes.SOURCE)
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# check appending two sinks
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t = pipes.Template()
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t.append('boguscmd', pipes.SINK)
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self.assertRaises(ValueError, t.append, 'boguscmd', pipes.SINK)
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# command needing file input but with no $IN
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t = pipes.Template()
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self.assertRaises(ValueError, t.append, 'boguscmd $OUT',
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pipes.FILEIN_FILEOUT)
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t = pipes.Template()
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self.assertRaises(ValueError, t.append, 'boguscmd',
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pipes.FILEIN_STDOUT)
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# command needing file output but with no $OUT
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t = pipes.Template()
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self.assertRaises(ValueError, t.append, 'boguscmd $IN',
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pipes.FILEIN_FILEOUT)
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t = pipes.Template()
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self.assertRaises(ValueError, t.append, 'boguscmd',
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pipes.STDIN_FILEOUT)
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def testBadPrependOptions(self):
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t = pipes.Template()
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# try a non-string command
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self.assertRaises(TypeError, t.prepend, 7, pipes.STDIN_STDOUT)
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# try a type that isn't recognized
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self.assertRaises(ValueError, t.prepend, 'tr a-z A-Z', 'xx')
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# shouldn't be able to prepend a sink
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self.assertRaises(ValueError, t.prepend, 'boguscmd', pipes.SINK)
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# check prepending two sources
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t = pipes.Template()
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t.prepend('boguscmd', pipes.SOURCE)
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self.assertRaises(ValueError, t.prepend, 'boguscmd', pipes.SOURCE)
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# command needing file input but with no $IN
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t = pipes.Template()
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self.assertRaises(ValueError, t.prepend, 'boguscmd $OUT',
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pipes.FILEIN_FILEOUT)
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t = pipes.Template()
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self.assertRaises(ValueError, t.prepend, 'boguscmd',
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pipes.FILEIN_STDOUT)
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# command needing file output but with no $OUT
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t = pipes.Template()
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self.assertRaises(ValueError, t.prepend, 'boguscmd $IN',
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pipes.FILEIN_FILEOUT)
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t = pipes.Template()
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self.assertRaises(ValueError, t.prepend, 'boguscmd',
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pipes.STDIN_FILEOUT)
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def testBadOpenMode(self):
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t = pipes.Template()
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self.assertRaises(ValueError, t.open, 'bogusfile', 'x')
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def testClone(self):
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t = pipes.Template()
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t.append('tr a-z A-Z', pipes.STDIN_STDOUT)
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u = t.clone()
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self.assertNotEqual(id(t), id(u))
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self.assertEqual(t.steps, u.steps)
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self.assertNotEqual(id(t.steps), id(u.steps))
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self.assertEqual(t.debugging, u.debugging)
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def tearDownModule():
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reap_children()
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if __name__ == "__main__":
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unittest.main()
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