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✏️ test_pipes.py
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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), "<Template instance, steps=[]>") t.append('tr a-z A-Z', pipes.STDIN_STDOUT) self.assertEqual(repr(t), "<Template instance, steps=[('tr a-z A-Z', '--')]>") def testSetDebug(self): t = pipes.Template() t.debug(False) self.assertEqual(t.debugging, False) t.debug(True) self.assertEqual(t.debugging, True) def testReadOpenSink(self): # check calling open('r') on a pipe ending with # a sink raises ValueError t = pipes.Template() t.append('boguscmd', pipes.SINK) self.assertRaises(ValueError, t.open, 'bogusfile', 'r') def testWriteOpenSource(self): # check calling open('w') on a pipe ending with # a source raises ValueError t = pipes.Template() t.prepend('boguscmd', pipes.SOURCE) self.assertRaises(ValueError, t.open, 'bogusfile', 'w') def testBadAppendOptions(self): t = pipes.Template() # try a non-string command self.assertRaises(TypeError, t.append, 7, pipes.STDIN_STDOUT) # try a type that isn't recognized self.assertRaises(ValueError, t.append, 'boguscmd', 'xx') # shouldn't be able to append a source self.assertRaises(ValueError, t.append, 'boguscmd', pipes.SOURCE) # check appending two sinks t = pipes.Template() t.append('boguscmd', pipes.SINK) self.assertRaises(ValueError, t.append, 'boguscmd', pipes.SINK) # command needing file input but with no $IN t = pipes.Template() self.assertRaises(ValueError, t.append, 'boguscmd $OUT', pipes.FILEIN_FILEOUT) t = pipes.Template() self.assertRaises(ValueError, t.append, 'boguscmd', pipes.FILEIN_STDOUT) # command needing file output but with no $OUT t = pipes.Template() self.assertRaises(ValueError, t.append, 'boguscmd $IN', pipes.FILEIN_FILEOUT) t = pipes.Template() self.assertRaises(ValueError, t.append, 'boguscmd', pipes.STDIN_FILEOUT) def testBadPrependOptions(self): t = pipes.Template() # try a non-string command self.assertRaises(TypeError, t.prepend, 7, pipes.STDIN_STDOUT) # try a type that isn't recognized self.assertRaises(ValueError, t.prepend, 'tr a-z A-Z', 'xx') # shouldn't be able to prepend a sink self.assertRaises(ValueError, t.prepend, 'boguscmd', pipes.SINK) # check prepending two sources t = pipes.Template() t.prepend('boguscmd', pipes.SOURCE) self.assertRaises(ValueError, t.prepend, 'boguscmd', pipes.SOURCE) # command needing file input but with no $IN t = pipes.Template() self.assertRaises(ValueError, t.prepend, 'boguscmd $OUT', pipes.FILEIN_FILEOUT) t = pipes.Template() self.assertRaises(ValueError, t.prepend, 'boguscmd', pipes.FILEIN_STDOUT) # command needing file output but with no $OUT t = pipes.Template() self.assertRaises(ValueError, t.prepend, 'boguscmd $IN', pipes.FILEIN_FILEOUT) t = pipes.Template() self.assertRaises(ValueError, t.prepend, 'boguscmd', pipes.STDIN_FILEOUT) def testBadOpenMode(self): t = pipes.Template() self.assertRaises(ValueError, t.open, 'bogusfile', 'x') def testClone(self): t = pipes.Template() t.append('tr a-z A-Z', pipes.STDIN_STDOUT) u = t.clone() self.assertNotEqual(id(t), id(u)) self.assertEqual(t.steps, u.steps) self.assertNotEqual(id(t.steps), id(u.steps)) self.assertEqual(t.debugging, u.debugging) def test_main(): run_unittest(SimplePipeTests) reap_children() if __name__ == "__main__": test_main()
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