lib-python.2.7.test.test_pipes.py Maven / Gradle / Ivy

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import pipes
import os
import string
import unittest
from test.test_support import TESTFN, run_unittest, unlink, reap_children

if os.name != 'posix':
    raise unittest.SkipTest('pipes module only works on posix')

TESTFN2 = TESTFN + "2"

# tr a-z A-Z is not portable, so make the ranges explicit
s_command = 'tr %s %s' % (string.ascii_lowercase, string.ascii_uppercase)

class SimplePipeTests(unittest.TestCase):
    def tearDown(self):
        for f in (TESTFN, TESTFN2):
            unlink(f)

    def testSimplePipe1(self):
        t = pipes.Template()
        t.append(s_command, pipes.STDIN_STDOUT)
        f = t.open(TESTFN, 'w')
        f.write('hello world #1')
        f.close()
        with open(TESTFN) as f:
            self.assertEqual(f.read(), 'HELLO WORLD #1')

    def testSimplePipe2(self):
        with open(TESTFN, 'w') as f:
            f.write('hello world #2')
        t = pipes.Template()
        t.append(s_command + ' < $IN > $OUT', pipes.FILEIN_FILEOUT)
        t.copy(TESTFN, TESTFN2)
        with open(TESTFN2) as f:
            self.assertEqual(f.read(), 'HELLO WORLD #2')

    def testSimplePipe3(self):
        with open(TESTFN, 'w') as f:
            f.write('hello world #2')
        t = pipes.Template()
        t.append(s_command + ' < $IN', pipes.FILEIN_STDOUT)
        with t.open(TESTFN, 'r') as f:
            self.assertEqual(f.read(), 'HELLO WORLD #2')

    def testEmptyPipeline1(self):
        # copy through empty pipe
        d = 'empty pipeline test COPY'
        with open(TESTFN, 'w') as f:
            f.write(d)
        with open(TESTFN2, 'w') as f:
            f.write('')
        t=pipes.Template()
        t.copy(TESTFN, TESTFN2)
        with open(TESTFN2) as f:
            self.assertEqual(f.read(), d)

    def testEmptyPipeline2(self):
        # read through empty pipe
        d = 'empty pipeline test READ'
        with open(TESTFN, 'w') as f:
            f.write(d)
        t=pipes.Template()
        with t.open(TESTFN, 'r') as f:
            self.assertEqual(f.read(), d)

    def testEmptyPipeline3(self):
        # write through empty pipe
        d = 'empty pipeline test WRITE'
        t = pipes.Template()
        with t.open(TESTFN, 'w') as f:
            f.write(d)
        with open(TESTFN) as f:
            self.assertEqual(f.read(), d)

    def testQuoting(self):
        safeunquoted = string.ascii_letters + string.digits + '@%_-+=:,./'
        unsafe = '"`$\\!'

        self.assertEqual(pipes.quote(''), "''")
        self.assertEqual(pipes.quote(safeunquoted), safeunquoted)
        self.assertEqual(pipes.quote('test file name'), "'test file name'")
        for u in unsafe:
            self.assertEqual(pipes.quote('test%sname' % u),
                              "'test%sname'" % u)
        for u in unsafe:
            self.assertEqual(pipes.quote("test%s'name'" % u),
                             "'test%s'\"'\"'name'\"'\"''" % u)

    def testRepr(self):
        t = pipes.Template()
        self.assertEqual(repr(t), "