diff options
| -rw-r--r-- | Lib/test/test_fileinput.py | 159 | ||||
| -rw-r--r-- | Lib/test/test_sundry.py | 1 |
2 files changed, 159 insertions, 1 deletions
diff --git a/Lib/test/test_fileinput.py b/Lib/test/test_fileinput.py new file mode 100644 index 0000000..fe90860 --- /dev/null +++ b/Lib/test/test_fileinput.py @@ -0,0 +1,159 @@ +''' +Tests for fileinput module. +Nick Mathewson +''' + +from test_support import verify, verbose, TESTFN +import sys, os, re +from StringIO import StringIO +from fileinput import FileInput + +# 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): + name = TESTFN + str(i) + f = open(name, 'w') + 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) diff --git a/Lib/test/test_sundry.py b/Lib/test/test_sundry.py index f2a4c76..7b1ff84 100644 --- a/Lib/test/test_sundry.py +++ b/Lib/test/test_sundry.py @@ -30,7 +30,6 @@ import doctest import dumbdbm import encodings import filecmp -import fileinput import fnmatch import formatter import fpformat |