import pipes import os import string import unittest import shutil from test.support import run_unittest, reap_children, unix_shell from test.support.os_helper import TESTFN, unlink if os.name != 'posix': raise unittest.SkipTest('pipes module only works on posix') if not (unix_shell and os.path.exists(unix_shell)): raise unittest.SkipTest('pipes module requires a shell') 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): if shutil.which('tr') is None: self.skipTest('tr is not available') t = pipes.Template() t.append(s_command, pipes.STDIN_STDOUT) with t.open(TESTFN, 'w') as f: f.write('hello world #1') with open(TESTFN) as f: self.assertEqual(f.read(), 'HELLO WORLD #1') def testSimplePipe2(self): if shutil.which('tr') is None: self.skipTest('tr is not available') 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): if shutil.which('tr') is None: self.skipTest('tr is not available') with open(TESTFN, 'w') as f: f.write('hello world #2') t = pipes.Template() t.append(s_command + ' < $IN', pipes.FILEIN_STDOUT) f = t.open(TESTFN, 'r') try: self.assertEqual(f.read(), 'HELLO WORLD #2') finally: f.close() 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() f = t.open(TESTFN, 'r') try: self.assertEqual(f.read(), d) finally: f.close() 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 testRepr(self): t = pipes.Template() self.assertEqual(repr(t), "