47d9ca87b0
The decorators caused the `test_set_use_source_cache_true()` test to be skipped in most scenarios. It was only run on a Windows host targeting a non-Windows remote platform. The source file is opened with the `FILE_SHARE_DELETE` sharing mode, which allows the file to be removed even though it is also memory-mapped; at least, this behavior is observed on Windows 11. The patch replaces the operation with an attempt to overwrite the file, which still fails for such files on Windows 11.
72 lines
2.3 KiB
Python
72 lines
2.3 KiB
Python
"""
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Tests large source files are not locked on Windows when source cache is disabled
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"""
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import lldb
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import os
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from lldbsuite.test.decorators import *
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from lldbsuite.test.lldbtest import *
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from lldbsuite.test import lldbutil
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from shutil import copy
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class SettingsUseSourceCacheTestCase(TestBase):
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NO_DEBUG_INFO_TESTCASE = True
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def test_set_use_source_cache_false(self):
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"""Test that after 'set use-source-cache false', files are not locked."""
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self.set_use_source_cache_and_test(False)
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@skipIf(hostoslist=no_match(["windows"]))
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def test_set_use_source_cache_true(self):
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"""Test that after 'set use-source-cache true', files are locked."""
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self.set_use_source_cache_and_test(True)
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def set_use_source_cache_and_test(self, is_cache_enabled):
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"""Common test for both True/False values of use-source-cache."""
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self.build()
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# Enable/Disable source cache
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self.runCmd(
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"settings set use-source-cache " + ("true" if is_cache_enabled else "false")
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)
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# Get paths for the main source file.
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src = self.getBuildArtifact("main-copy.cpp")
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self.assertTrue(src)
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# Make sure source file is bigger than 16K to trigger memory mapping
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self.assertGreater(os.stat(src).st_size, 4 * 4096)
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target, process, thread, breakpoint = lldbutil.run_to_name_breakpoint(
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self, "calc"
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)
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# Show the source file contents to make sure LLDB loads src file.
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self.runCmd("source list")
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# Try overwriting the source file.
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is_file_overwritten = self.overwriteFile(src)
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if is_cache_enabled:
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self.assertFalse(
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is_file_overwritten,
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"Source cache is enabled, but writing to file succeeded",
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)
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if not is_cache_enabled:
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self.assertTrue(
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is_file_overwritten,
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"Source cache is disabled, but writing to file failed",
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)
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def overwriteFile(self, src):
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"""Write to file and return true iff file was successfully written."""
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try:
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f = open(src, "w")
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f.writelines(["// hello world\n"])
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f.close()
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return True
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except Exception:
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return False
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