143 lines
4.5 KiB
Python
143 lines
4.5 KiB
Python
import unittest
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from StringIO import StringIO
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from util.registry.filelike import FilelikeStreamConcat, LimitingStream, StreamSlice
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class TestFilelikeStreamConcat(unittest.TestCase):
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def somegenerator(self):
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yield 'some'
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yield 'cool'
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yield 'file-contents'
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def test_parts(self):
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gens = iter([StringIO(s) for s in self.somegenerator()])
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fileobj = FilelikeStreamConcat(gens)
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self.assertEquals('so', fileobj.read(2))
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self.assertEquals('mec', fileobj.read(3))
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self.assertEquals('oolfile', fileobj.read(7))
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self.assertEquals('-contents', fileobj.read(-1))
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def test_entire(self):
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gens = iter([StringIO(s) for s in self.somegenerator()])
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fileobj = FilelikeStreamConcat(gens)
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self.assertEquals('somecoolfile-contents', fileobj.read(-1))
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class TestLimitingStream(unittest.TestCase):
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def test_nolimit(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj)
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self.assertEquals('this is a cool test', stream.read(-1))
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self.assertEquals(stream.tell(), len('this is a cool test'))
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def test_simplelimit(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj, 4)
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self.assertEquals('this', stream.read(-1))
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self.assertEquals(stream.tell(), 4)
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def test_simplelimit_readdefined(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj, 4)
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self.assertEquals('th', stream.read(2))
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self.assertEquals(stream.tell(), 2)
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def test_nolimit_readdefined(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj, -1)
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self.assertEquals('th', stream.read(2))
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self.assertEquals(stream.tell(), 2)
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def test_limit_multiread(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj, 7)
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self.assertEquals('this', stream.read(4))
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self.assertEquals(' is', stream.read(3))
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self.assertEquals('', stream.read(2))
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self.assertEquals(stream.tell(), 7)
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def test_limit_multiread2(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj, 7)
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self.assertEquals('this', stream.read(4))
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self.assertEquals(' is', stream.read(-1))
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self.assertEquals(stream.tell(), 7)
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def test_seek(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj)
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stream.seek(2)
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self.assertEquals('is', stream.read(2))
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self.assertEquals(stream.tell(), 4)
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def test_seek_withlimit(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj, 3)
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stream.seek(2)
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self.assertEquals('i', stream.read(2))
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self.assertEquals(stream.tell(), 3)
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def test_seek_pastlimit(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj, 3)
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stream.seek(4)
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self.assertEquals('', stream.read(1))
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self.assertEquals(stream.tell(), 3)
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def test_seek_to_tell(self):
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fileobj = StringIO('this is a cool test')
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stream = LimitingStream(fileobj, 3)
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stream.seek(stream.tell())
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self.assertEquals('thi', stream.read(4))
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self.assertEquals(stream.tell(), 3)
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class TestStreamSlice(unittest.TestCase):
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def test_none_read(self):
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class NoneReader(object):
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def read(self, size=None):
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return None
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stream = StreamSlice(NoneReader(), 0)
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self.assertEquals(None, stream.read(-1))
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self.assertEquals(0, stream.tell())
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def test_noslice(self):
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fileobj = StringIO('this is a cool test')
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stream = StreamSlice(fileobj, 0)
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self.assertEquals('this is a cool test', stream.read(-1))
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self.assertEquals(stream.tell(), len('this is a cool test'))
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def test_startindex(self):
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fileobj = StringIO('this is a cool test')
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stream = StreamSlice(fileobj, 5)
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self.assertEquals('is a cool test', stream.read(-1))
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self.assertEquals(stream.tell(), len('is a cool test'))
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def test_startindex_limitedread(self):
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fileobj = StringIO('this is a cool test')
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stream = StreamSlice(fileobj, 5)
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self.assertEquals('is a', stream.read(4))
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self.assertEquals(stream.tell(), 4)
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def test_slice(self):
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fileobj = StringIO('this is a cool test')
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stream = StreamSlice(fileobj, 5, 9)
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self.assertEquals('is a', stream.read(-1))
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self.assertEquals(stream.tell(), len('is a'))
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def test_slice_explictread(self):
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fileobj = StringIO('this is a cool test')
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stream = StreamSlice(fileobj, 5, 9)
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self.assertEquals('is', stream.read(2))
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self.assertEquals(' a', stream.read(5))
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self.assertEquals(stream.tell(), len('is a'))
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if __name__ == '__main__':
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unittest.main()
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