forked from OSchip/llvm-project
99 lines
3.5 KiB
Python
99 lines
3.5 KiB
Python
"""
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Test that a variable watchpoint should only hit when in scope.
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"""
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import os, time
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import unittest2
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import lldb
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from lldbtest import *
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import lldbutil
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class WatchedVariableHitWhenInScopeTestCase(TestBase):
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mydir = TestBase.compute_mydir(__file__)
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#
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# This test depends on not tracking watchpoint expression hits if we have
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# left the watchpoint scope. We will provide such an ability at some point
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# but the way this was done was incorrect, and it is unclear that for the
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# most part that's not what folks mostly want, so we have to provide a
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# clearer API to express this.
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#
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@dsym_test
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@unittest2.expectedFailure
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def test_watched_var_should_only_hit_when_in_scope_with_dsym(self):
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"""Test that a variable watchpoint should only hit when in scope."""
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self.buildDsym(dictionary=self.d)
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self.setTearDownCleanup(dictionary=self.d)
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self.watched_var()
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@unittest2.expectedFailure
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@dwarf_test
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def test_watched_var_should_only_hit_when_in_scope_with_dwarf(self):
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"""Test that a variable watchpoint should only hit when in scope."""
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self.buildDwarf(dictionary=self.d)
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self.setTearDownCleanup(dictionary=self.d)
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self.watched_var()
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def setUp(self):
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# Call super's setUp().
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TestBase.setUp(self)
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# Our simple source filename.
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self.source = 'main.c'
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self.exe_name = self.testMethodName
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self.d = {'C_SOURCES': self.source, 'EXE': self.exe_name}
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def watched_var(self):
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"""Test a simple sequence of watchpoint creation and watchpoint hit."""
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exe = os.path.join(os.getcwd(), self.exe_name)
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self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
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# Add a breakpoint to set a watchpoint when stopped in main.
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lldbutil.run_break_set_by_symbol (self, "main", num_expected_locations=-1)
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# Run the program.
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self.runCmd("run", RUN_SUCCEEDED)
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# We should be stopped again due to the breakpoint.
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# The stop reason of the thread should be breakpoint.
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self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
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substrs = ['stopped',
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'stop reason = breakpoint'])
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# Now let's set a watchpoint for 'c.a'.
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# There should be only one watchpoint hit (see main.c).
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self.expect("watchpoint set variable c.a", WATCHPOINT_CREATED,
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substrs = ['Watchpoint created', 'size = 4', 'type = w'])
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# Use the '-v' option to do verbose listing of the watchpoint.
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# The hit count should be 0 initially.
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self.expect("watchpoint list -v",
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substrs = ['hit_count = 0'])
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self.runCmd("process continue")
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# We should be stopped again due to the watchpoint (write type), but
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# only once. The stop reason of the thread should be watchpoint.
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self.expect("thread list", STOPPED_DUE_TO_WATCHPOINT,
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substrs = ['stopped',
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'stop reason = watchpoint'])
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self.runCmd("process continue")
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# Don't expect the read of 'global' to trigger a stop exception.
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# The process status should be 'exited'.
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self.expect("process status",
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substrs = ['exited'])
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# Use the '-v' option to do verbose listing of the watchpoint.
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# The hit count should now be 1.
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self.expect("watchpoint list -v",
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substrs = ['hit_count = 1'])
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if __name__ == '__main__':
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import atexit
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lldb.SBDebugger.Initialize()
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atexit.register(lambda: lldb.SBDebugger.Terminate())
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unittest2.main()
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