86268e4459
Add a keyword argument 'endstr' to TestBase.expect() method to assert that the output will end with 'endstr'. Add TestBase.switch_to_thread_with_stop_reason(stop_reason) to select the thread with the stop reason = 'stop_reason' as the current thread. o TestWatchLocation.py: Modified to switch to the stopped thread with stop reason = watchpoint and to evaluate an expression with expected output for stronger assertion. llvm-svn: 140890
103 lines
4.1 KiB
Python
103 lines
4.1 KiB
Python
"""
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Test lldb watchpoint that uses '-x size' to watch a pointed location with size.
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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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class HelloWatchLocationTestCase(TestBase):
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mydir = os.path.join("functionalities", "watchpoint", "hello_watchlocation")
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@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
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def test_hello_watchlocation_with_dsym(self):
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"""Test watching a location with '-x size' option."""
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self.buildDsym(dictionary=self.d)
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self.setTearDownCleanup(dictionary=self.d)
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self.hello_watchlocation()
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def test_hello_watchlocation_with_dwarf(self):
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"""Test watching a location with '-x size' option."""
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self.buildDwarf(dictionary=self.d)
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self.setTearDownCleanup(dictionary=self.d)
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self.hello_watchlocation()
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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.cpp'
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# Find the line number to break inside main().
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self.line = line_number(self.source, '// Set break point at this line.')
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# This is for verifying that watch location works.
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self.violating_func = "do_bad_thing_with_location";
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# Build dictionary to have unique executable names for each test method.
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self.exe_name = self.testMethodName
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self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
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def hello_watchlocation(self):
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"""Test watching a location with '-x size' option."""
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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 on the breakpoint.
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self.expect("breakpoint set -l %d" % self.line, BREAKPOINT_CREATED,
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startstr = "Breakpoint created: 1: file ='%s', line = %d, locations = 1" %
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(self.source, self.line))
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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 write-type watchpoint pointed to by 'g_char_ptr'.
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# The main.cpp, by design, misbehaves by not following the agreed upon
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# protocol of using a mutex while accessing the global pool and by not
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# incrmenting the global pool by 2.
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self.expect("frame variable -w write -x 1 -g g_char_ptr", WATCHPOINT_CREATED,
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substrs = ['Watchpoint created', 'size = 1', 'type = w'])
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self.runCmd("expr unsigned val = *g_char_ptr; val")
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self.expect(self.res.GetOutput().splitlines()[0], exe=False,
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endstr = ' = 0')
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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.violating_func])
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# Switch to the thread stopped due to watchpoint and issue some commands.
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self.switch_to_thread_with_stop_reason(lldb.eStopReasonWatchpoint)
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self.runCmd("thread backtrace")
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self.runCmd("expr unsigned val = *g_char_ptr; val")
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self.expect(self.res.GetOutput().splitlines()[0], exe=False,
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endstr = ' = 1')
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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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self.runCmd("thread backtrace all")
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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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