mirror of
https://github.com/thegeeklab/ansible-later.git
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106 lines
3.4 KiB
Python
106 lines
3.4 KiB
Python
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from .lib import TestBase, FileCreator
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from smmap.util import (
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MapWindow,
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MapRegion,
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MapRegionList,
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ALLOCATIONGRANULARITY,
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is_64_bit,
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align_to_mmap
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)
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import os
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import sys
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class TestMMan(TestBase):
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def test_window(self):
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wl = MapWindow(0, 1) # left
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wc = MapWindow(1, 1) # center
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wc2 = MapWindow(10, 5) # another center
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wr = MapWindow(8000, 50) # right
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assert wl.ofs_end() == 1
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assert wc.ofs_end() == 2
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assert wr.ofs_end() == 8050
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# extension does nothing if already in place
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maxsize = 100
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wc.extend_left_to(wl, maxsize)
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assert wc.ofs == 1 and wc.size == 1
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wl.extend_right_to(wc, maxsize)
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wl.extend_right_to(wc, maxsize)
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assert wl.ofs == 0 and wl.size == 1
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# an actual left extension
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pofs_end = wc2.ofs_end()
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wc2.extend_left_to(wc, maxsize)
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assert wc2.ofs == wc.ofs_end() and pofs_end == wc2.ofs_end()
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# respects maxsize
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wc.extend_right_to(wr, maxsize)
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assert wc.ofs == 1 and wc.size == maxsize
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wc.extend_right_to(wr, maxsize)
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assert wc.ofs == 1 and wc.size == maxsize
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# without maxsize
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wc.extend_right_to(wr, sys.maxsize)
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assert wc.ofs_end() == wr.ofs and wc.ofs == 1
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# extend left
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wr.extend_left_to(wc2, maxsize)
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wr.extend_left_to(wc2, maxsize)
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assert wr.size == maxsize
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wr.extend_left_to(wc2, sys.maxsize)
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assert wr.ofs == wc2.ofs_end()
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wc.align()
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assert wc.ofs == 0 and wc.size == align_to_mmap(wc.size, True)
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def test_region(self):
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with FileCreator(self.k_window_test_size, "window_test") as fc:
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half_size = fc.size // 2
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rofs = align_to_mmap(4200, False)
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rfull = MapRegion(fc.path, 0, fc.size)
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rhalfofs = MapRegion(fc.path, rofs, fc.size)
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rhalfsize = MapRegion(fc.path, 0, half_size)
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# offsets
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assert rfull.ofs_begin() == 0 and rfull.size() == fc.size
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assert rfull.ofs_end() == fc.size # if this method works, it works always
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assert rhalfofs.ofs_begin() == rofs and rhalfofs.size() == fc.size - rofs
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assert rhalfsize.ofs_begin() == 0 and rhalfsize.size() == half_size
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assert rfull.includes_ofs(0) and rfull.includes_ofs(fc.size - 1) and rfull.includes_ofs(half_size)
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assert not rfull.includes_ofs(-1) and not rfull.includes_ofs(sys.maxsize)
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# auto-refcount
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assert rfull.client_count() == 1
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rfull2 = rfull
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assert rfull.client_count() == 1, "no auto-counting"
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# window constructor
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w = MapWindow.from_region(rfull)
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assert w.ofs == rfull.ofs_begin() and w.ofs_end() == rfull.ofs_end()
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def test_region_list(self):
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with FileCreator(100, "sample_file") as fc:
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fd = os.open(fc.path, os.O_RDONLY)
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try:
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for item in (fc.path, fd):
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ml = MapRegionList(item)
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assert len(ml) == 0
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assert ml.path_or_fd() == item
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assert ml.file_size() == fc.size
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finally:
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os.close(fd)
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def test_util(self):
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assert isinstance(is_64_bit(), bool) # just call it
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assert align_to_mmap(1, False) == 0
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assert align_to_mmap(1, True) == ALLOCATIONGRANULARITY
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