python类SOURCE的实例源码-面圈网

test_pipes.py 文件源码项目：zippy 作者: securesystemslab 项目源码文件源码阅读 22 收藏 0 点赞 0 评论 0

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')

test_pipes.py 文件源码项目：zippy 作者: securesystemslab 项目源码文件源码阅读 21 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：zippy 作者: securesystemslab 项目源码文件源码阅读 22 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：oil 作者: oilshell 项目源码文件源码阅读 21 收藏 0 点赞 0 评论 0

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')

test_pipes.py 文件源码项目：oil 作者: oilshell 项目源码文件源码阅读 19 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：oil 作者: oilshell 项目源码文件源码阅读 18 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：python2-tracer 作者: extremecoders-re 项目源码文件源码阅读 22 收藏 0 点赞 0 评论 0

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')

test_pipes.py 文件源码项目：python2-tracer 作者: extremecoders-re 项目源码文件源码阅读 22 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：python2-tracer 作者: extremecoders-re 项目源码文件源码阅读 24 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：web_ctp 作者: molebot 项目源码文件源码阅读 23 收藏 0 点赞 0 评论 0

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')

test_pipes.py 文件源码项目：web_ctp 作者: molebot 项目源码文件源码阅读 23 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：web_ctp 作者: molebot 项目源码文件源码阅读 33 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：pefile.pypy 作者: cloudtracer 项目源码文件源码阅读 19 收藏 0 点赞 0 评论 0

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')

test_pipes.py 文件源码项目：pefile.pypy 作者: cloudtracer 项目源码文件源码阅读 20 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：pefile.pypy 作者: cloudtracer 项目源码文件源码阅读 21 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：ouroboros 作者: pybee 项目源码文件源码阅读 27 收藏 0 点赞 0 评论 0

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')

test_pipes.py 文件源码项目：ouroboros 作者: pybee 项目源码文件源码阅读 22 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：ouroboros 作者: pybee 项目源码文件源码阅读 20 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：ndk-python 作者: gittor 项目源码文件源码阅读 20 收藏 0 点赞 0 评论 0

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')

test_pipes.py 文件源码项目：ndk-python 作者: gittor 项目源码文件源码阅读 31 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：ndk-python 作者: gittor 项目源码文件源码阅读 24 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：kbe_server 作者: xiaohaoppy 项目源码文件源码阅读 19 收藏 0 点赞 0 评论 0

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')

test_pipes.py 文件源码项目：kbe_server 作者: xiaohaoppy 项目源码文件源码阅读 27 收藏 0 点赞 0 评论 0

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)

test_pipes.py 文件源码项目：kbe_server 作者: xiaohaoppy 项目源码文件源码阅读 22 收藏 0 点赞 0 评论 0

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)