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04f357cffe
imports e.g. test_support must do so using an absolute package name such as "import test.test_support" or "from test import test_support". This also updates the README in Lib/test, and gets rid of the duplicate data dirctory in Lib/test/data (replaced by Lib/email/test/data). Now Tim and Jack can have at it. :)
159 lines
4.5 KiB
Python
159 lines
4.5 KiB
Python
'''
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Tests for fileinput module.
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Nick Mathewson
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'''
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from test.test_support import verify, verbose, TESTFN
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import sys, os, re
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from StringIO import StringIO
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from fileinput import FileInput
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# The fileinput module has 2 interfaces: the FileInput class which does
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# all the work, and a few functions (input, etc.) that use a global _state
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# variable. We only test the FileInput class, since the other functions
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# only provide a thin facade over FileInput.
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# Write lines (a list of lines) to temp file number i, and return the
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# temp file's name.
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def writeTmp(i, lines):
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name = TESTFN + str(i)
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f = open(name, 'w')
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f.writelines(lines)
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f.close()
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return name
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pat = re.compile(r'LINE (\d+) OF FILE (\d+)')
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def remove_tempfiles(*names):
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for name in names:
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try:
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os.unlink(name)
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except:
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pass
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def runTests(t1, t2, t3, t4, bs=0, round=0):
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start = 1 + round*6
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if verbose:
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print '%s. Simple iteration (bs=%s)' % (start+0, bs)
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fi = FileInput(files=(t1, t2, t3, t4), bufsize=bs)
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lines = list(fi)
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fi.close()
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verify(len(lines) == 31)
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verify(lines[4] == 'Line 5 of file 1\n')
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verify(lines[30] == 'Line 1 of file 4\n')
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verify(fi.lineno() == 31)
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verify(fi.filename() == t4)
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if verbose:
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print '%s. Status variables (bs=%s)' % (start+1, bs)
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fi = FileInput(files=(t1, t2, t3, t4), bufsize=bs)
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s = "x"
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while s and s != 'Line 6 of file 2\n':
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s = fi.readline()
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verify(fi.filename() == t2)
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verify(fi.lineno() == 21)
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verify(fi.filelineno() == 6)
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verify(not fi.isfirstline())
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verify(not fi.isstdin())
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if verbose:
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print '%s. Nextfile (bs=%s)' % (start+2, bs)
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fi.nextfile()
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verify(fi.readline() == 'Line 1 of file 3\n')
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verify(fi.lineno() == 22)
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fi.close()
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if verbose:
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print '%s. Stdin (bs=%s)' % (start+3, bs)
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fi = FileInput(files=(t1, t2, t3, t4, '-'), bufsize=bs)
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savestdin = sys.stdin
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try:
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sys.stdin = StringIO("Line 1 of stdin\nLine 2 of stdin\n")
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lines = list(fi)
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verify(len(lines) == 33)
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verify(lines[32] == 'Line 2 of stdin\n')
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verify(fi.filename() == '<stdin>')
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fi.nextfile()
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finally:
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sys.stdin = savestdin
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if verbose:
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print '%s. Boundary conditions (bs=%s)' % (start+4, bs)
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fi = FileInput(files=(t1, t2, t3, t4), bufsize=bs)
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verify(fi.lineno() == 0)
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verify(fi.filename() == None)
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fi.nextfile()
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verify(fi.lineno() == 0)
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verify(fi.filename() == None)
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if verbose:
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print '%s. Inplace (bs=%s)' % (start+5, bs)
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savestdout = sys.stdout
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try:
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fi = FileInput(files=(t1, t2, t3, t4), inplace=1, bufsize=bs)
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for line in fi:
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line = line[:-1].upper()
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print line
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fi.close()
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finally:
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sys.stdout = savestdout
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fi = FileInput(files=(t1, t2, t3, t4), bufsize=bs)
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for line in fi:
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verify(line[-1] == '\n')
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m = pat.match(line[:-1])
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verify(m != None)
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verify(int(m.group(1)) == fi.filelineno())
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fi.close()
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def writeFiles():
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global t1, t2, t3, t4
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t1 = writeTmp(1, ["Line %s of file 1\n" % (i+1) for i in range(15)])
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t2 = writeTmp(2, ["Line %s of file 2\n" % (i+1) for i in range(10)])
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t3 = writeTmp(3, ["Line %s of file 3\n" % (i+1) for i in range(5)])
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t4 = writeTmp(4, ["Line %s of file 4\n" % (i+1) for i in range(1)])
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# First, run the tests with default and teeny buffer size.
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for round, bs in (0, 0), (1, 30):
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try:
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writeFiles()
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runTests(t1, t2, t3, t4, bs, round)
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finally:
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remove_tempfiles(t1, t2, t3, t4)
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# Next, check for proper behavior with 0-byte files.
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if verbose:
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print "13. 0-byte files"
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try:
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t1 = writeTmp(1, [""])
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t2 = writeTmp(2, [""])
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t3 = writeTmp(3, ["The only line there is.\n"])
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t4 = writeTmp(4, [""])
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fi = FileInput(files=(t1, t2, t3, t4))
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line = fi.readline()
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verify(line == 'The only line there is.\n')
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verify(fi.lineno() == 1)
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verify(fi.filelineno() == 1)
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verify(fi.filename() == t3)
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line = fi.readline()
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verify(not line)
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verify(fi.lineno() == 1)
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verify(fi.filelineno() == 0)
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verify(fi.filename() == t4)
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fi.close()
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finally:
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remove_tempfiles(t1, t2, t3, t4)
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if verbose:
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print "14. Files that don't end with newline"
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try:
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t1 = writeTmp(1, ["A\nB\nC"])
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t2 = writeTmp(2, ["D\nE\nF"])
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fi = FileInput(files=(t1, t2))
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lines = list(fi)
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verify(lines == ["A\n", "B\n", "C", "D\n", "E\n", "F"])
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verify(fi.filelineno() == 3)
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verify(fi.lineno() == 6)
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finally:
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remove_tempfiles(t1, t2)
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