d0df704d8a
added python.path vm arg to startup script fixed infinite loop in unwrap() when displaying sequences of sequences git-svn-id: http://google-refine.googlecode.com/svn/trunk@509 7d457c2a-affb-35e4-300a-418c747d4874
228 lines
6.4 KiB
Python
228 lines
6.4 KiB
Python
'''
|
|
Tests for fileinput module.
|
|
Nick Mathewson
|
|
'''
|
|
|
|
from test.test_support import verify, verbose, TESTFN, TestFailed
|
|
import sys, os, re
|
|
from StringIO import StringIO
|
|
from fileinput import FileInput, hook_encoded
|
|
|
|
# The fileinput module has 2 interfaces: the FileInput class which does
|
|
# all the work, and a few functions (input, etc.) that use a global _state
|
|
# variable. We only test the FileInput class, since the other functions
|
|
# only provide a thin facade over FileInput.
|
|
|
|
# Write lines (a list of lines) to temp file number i, and return the
|
|
# temp file's name.
|
|
def writeTmp(i, lines, mode='w'): # opening in text mode is the default
|
|
name = TESTFN + str(i)
|
|
f = open(name, mode)
|
|
f.writelines(lines)
|
|
f.close()
|
|
return name
|
|
|
|
pat = re.compile(r'LINE (\d+) OF FILE (\d+)')
|
|
|
|
def remove_tempfiles(*names):
|
|
for name in names:
|
|
try:
|
|
os.unlink(name)
|
|
except:
|
|
pass
|
|
|
|
def runTests(t1, t2, t3, t4, bs=0, round=0):
|
|
start = 1 + round*6
|
|
if verbose:
|
|
print '%s. Simple iteration (bs=%s)' % (start+0, bs)
|
|
fi = FileInput(files=(t1, t2, t3, t4), bufsize=bs)
|
|
lines = list(fi)
|
|
fi.close()
|
|
verify(len(lines) == 31)
|
|
verify(lines[4] == 'Line 5 of file 1\n')
|
|
verify(lines[30] == 'Line 1 of file 4\n')
|
|
verify(fi.lineno() == 31)
|
|
verify(fi.filename() == t4)
|
|
|
|
if verbose:
|
|
print '%s. Status variables (bs=%s)' % (start+1, bs)
|
|
fi = FileInput(files=(t1, t2, t3, t4), bufsize=bs)
|
|
s = "x"
|
|
while s and s != 'Line 6 of file 2\n':
|
|
s = fi.readline()
|
|
verify(fi.filename() == t2)
|
|
verify(fi.lineno() == 21)
|
|
verify(fi.filelineno() == 6)
|
|
verify(not fi.isfirstline())
|
|
verify(not fi.isstdin())
|
|
|
|
if verbose:
|
|
print '%s. Nextfile (bs=%s)' % (start+2, bs)
|
|
fi.nextfile()
|
|
verify(fi.readline() == 'Line 1 of file 3\n')
|
|
verify(fi.lineno() == 22)
|
|
fi.close()
|
|
|
|
if verbose:
|
|
print '%s. Stdin (bs=%s)' % (start+3, bs)
|
|
fi = FileInput(files=(t1, t2, t3, t4, '-'), bufsize=bs)
|
|
savestdin = sys.stdin
|
|
try:
|
|
sys.stdin = StringIO("Line 1 of stdin\nLine 2 of stdin\n")
|
|
lines = list(fi)
|
|
verify(len(lines) == 33)
|
|
verify(lines[32] == 'Line 2 of stdin\n')
|
|
verify(fi.filename() == '<stdin>')
|
|
fi.nextfile()
|
|
finally:
|
|
sys.stdin = savestdin
|
|
|
|
if verbose:
|
|
print '%s. Boundary conditions (bs=%s)' % (start+4, bs)
|
|
fi = FileInput(files=(t1, t2, t3, t4), bufsize=bs)
|
|
verify(fi.lineno() == 0)
|
|
verify(fi.filename() == None)
|
|
fi.nextfile()
|
|
verify(fi.lineno() == 0)
|
|
verify(fi.filename() == None)
|
|
|
|
if verbose:
|
|
print '%s. Inplace (bs=%s)' % (start+5, bs)
|
|
savestdout = sys.stdout
|
|
try:
|
|
fi = FileInput(files=(t1, t2, t3, t4), inplace=1, bufsize=bs)
|
|
for line in fi:
|
|
line = line[:-1].upper()
|
|
print line
|
|
fi.close()
|
|
finally:
|
|
sys.stdout = savestdout
|
|
|
|
fi = FileInput(files=(t1, t2, t3, t4), bufsize=bs)
|
|
for line in fi:
|
|
verify(line[-1] == '\n')
|
|
m = pat.match(line[:-1])
|
|
verify(m != None)
|
|
verify(int(m.group(1)) == fi.filelineno())
|
|
fi.close()
|
|
|
|
|
|
def writeFiles():
|
|
global t1, t2, t3, t4
|
|
t1 = writeTmp(1, ["Line %s of file 1\n" % (i+1) for i in range(15)])
|
|
t2 = writeTmp(2, ["Line %s of file 2\n" % (i+1) for i in range(10)])
|
|
t3 = writeTmp(3, ["Line %s of file 3\n" % (i+1) for i in range(5)])
|
|
t4 = writeTmp(4, ["Line %s of file 4\n" % (i+1) for i in range(1)])
|
|
|
|
# First, run the tests with default and teeny buffer size.
|
|
for round, bs in (0, 0), (1, 30):
|
|
try:
|
|
writeFiles()
|
|
runTests(t1, t2, t3, t4, bs, round)
|
|
finally:
|
|
remove_tempfiles(t1, t2, t3, t4)
|
|
|
|
# Next, check for proper behavior with 0-byte files.
|
|
if verbose:
|
|
print "13. 0-byte files"
|
|
try:
|
|
t1 = writeTmp(1, [""])
|
|
t2 = writeTmp(2, [""])
|
|
t3 = writeTmp(3, ["The only line there is.\n"])
|
|
t4 = writeTmp(4, [""])
|
|
fi = FileInput(files=(t1, t2, t3, t4))
|
|
line = fi.readline()
|
|
verify(line == 'The only line there is.\n')
|
|
verify(fi.lineno() == 1)
|
|
verify(fi.filelineno() == 1)
|
|
verify(fi.filename() == t3)
|
|
line = fi.readline()
|
|
verify(not line)
|
|
verify(fi.lineno() == 1)
|
|
verify(fi.filelineno() == 0)
|
|
verify(fi.filename() == t4)
|
|
fi.close()
|
|
finally:
|
|
remove_tempfiles(t1, t2, t3, t4)
|
|
|
|
if verbose:
|
|
print "14. Files that don't end with newline"
|
|
try:
|
|
t1 = writeTmp(1, ["A\nB\nC"])
|
|
t2 = writeTmp(2, ["D\nE\nF"])
|
|
fi = FileInput(files=(t1, t2))
|
|
lines = list(fi)
|
|
verify(lines == ["A\n", "B\n", "C", "D\n", "E\n", "F"])
|
|
verify(fi.filelineno() == 3)
|
|
verify(fi.lineno() == 6)
|
|
finally:
|
|
remove_tempfiles(t1, t2)
|
|
|
|
if verbose:
|
|
print "15. Unicode filenames"
|
|
try:
|
|
t1 = writeTmp(1, ["A\nB"])
|
|
encoding = sys.getfilesystemencoding()
|
|
if encoding is None:
|
|
encoding = 'ascii'
|
|
fi = FileInput(files=unicode(t1, encoding))
|
|
lines = list(fi)
|
|
verify(lines == ["A\n", "B"])
|
|
finally:
|
|
remove_tempfiles(t1)
|
|
|
|
if verbose:
|
|
print "16. fileno()"
|
|
try:
|
|
t1 = writeTmp(1, ["A\nB"])
|
|
t2 = writeTmp(2, ["C\nD"])
|
|
fi = FileInput(files=(t1, t2))
|
|
verify(fi.fileno() == -1)
|
|
line = fi.next()
|
|
verify(fi.fileno() != -1)
|
|
fi.nextfile()
|
|
verify(fi.fileno() == -1)
|
|
line = list(fi)
|
|
verify(fi.fileno() == -1)
|
|
finally:
|
|
remove_tempfiles(t1, t2)
|
|
|
|
if verbose:
|
|
print "17. Specify opening mode"
|
|
try:
|
|
# invalid mode, should raise ValueError
|
|
fi = FileInput(mode="w")
|
|
raise TestFailed("FileInput should reject invalid mode argument")
|
|
except ValueError:
|
|
pass
|
|
try:
|
|
# try opening in universal newline mode
|
|
t1 = writeTmp(1, ["A\nB\r\nC\rD"], mode="wb")
|
|
fi = FileInput(files=t1, mode="U")
|
|
lines = list(fi)
|
|
verify(lines == ["A\n", "B\n", "C\n", "D"])
|
|
finally:
|
|
remove_tempfiles(t1)
|
|
|
|
if verbose:
|
|
print "18. Test file opening hook"
|
|
try:
|
|
# cannot use openhook and inplace mode
|
|
fi = FileInput(inplace=1, openhook=lambda f,m: None)
|
|
raise TestFailed("FileInput should raise if both inplace "
|
|
"and openhook arguments are given")
|
|
except ValueError:
|
|
pass
|
|
try:
|
|
fi = FileInput(openhook=1)
|
|
raise TestFailed("FileInput should check openhook for being callable")
|
|
except ValueError:
|
|
pass
|
|
try:
|
|
t1 = writeTmp(1, ["A\nB"], mode="wb")
|
|
fi = FileInput(files=t1, openhook=hook_encoded("rot13"))
|
|
lines = list(fi)
|
|
verify(lines == ["N\n", "O"])
|
|
finally:
|
|
remove_tempfiles(t1)
|