diff options
Diffstat (limited to 'Lib')
| -rw-r--r-- | Lib/test/output/test_mmap | 2 | ||||
| -rw-r--r-- | Lib/test/test_mmap.py | 36 |
2 files changed, 38 insertions, 0 deletions
diff --git a/Lib/test/output/test_mmap b/Lib/test/output/test_mmap index 1706ad5..02b24bc 100644 --- a/Lib/test/output/test_mmap +++ b/Lib/test/output/test_mmap @@ -31,4 +31,6 @@ test_mmap Modifying copy-on-write memory map. Ensuring copy-on-write maps cannot be resized. Ensuring invalid access parameter raises exception. + Ensuring that passing 0 as map length sets map size to current file size. + Ensuring that passing 0 as map length sets map size to current file size. Test passed diff --git a/Lib/test/test_mmap.py b/Lib/test/test_mmap.py index a6796d5..d225173 100644 --- a/Lib/test/test_mmap.py +++ b/Lib/test/test_mmap.py @@ -311,7 +311,43 @@ def test_both(): finally: os.unlink(TESTFN) + # test mapping of entire file by passing 0 for map length + if hasattr(os, "stat"): + print " Ensuring that passing 0 as map length sets map size to current file size." + f = open(TESTFN, "w+") + try: + f.write(2**16 * 'm') # Arbitrary character + f.close() + + f = open(TESTFN, "rb+") + mf = mmap.mmap(f.fileno(), 0) + verify(len(mf) == 2**16, "Map size should equal file size.") + vereq(mf.read(2**16), 2**16 * "m") + mf.close() + f.close() + + finally: + os.unlink(TESTFN) + + # test mapping of entire file by passing 0 for map length + if hasattr(os, "stat"): + print " Ensuring that passing 0 as map length sets map size to current file size." + f = open(TESTFN, "w+") + try: + f.write(2**16 * 'm') # Arbitrary character + f.close() + + f = open(TESTFN, "rb+") + mf = mmap.mmap(f.fileno(), 0) + verify(len(mf) == 2**16, "Map size should equal file size.") + vereq(mf.read(2**16), 2**16 * "m") + mf.close() + f.close() + + finally: + os.unlink(TESTFN) + print ' Test passed' test_both() |