b294fd2037
Fixing an issue where formats would not propagate from parents to children in all cases Details follow: an SBValue has children and those are fetched along with their values Now, one calls SBValue::SetFormat() on the parent Technically, the format choices should propagate onto the children (see ValueObject::GetFormat()) But if the children values are already fetched, they won't notice the format change and won't update themselves This commit fixes that by making ValueObject::GetValueAsCString() check if any format change intervened from the previous call to the current one A test case is also added llvm-svn: 183030
92 lines
3.7 KiB
Python
92 lines
3.7 KiB
Python
"""
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Check if changing Format on an SBValue correctly propagates that new format to children as it should
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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 FormatPropagationTestCase(TestBase):
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mydir = os.path.join("functionalities", "data-formatter", "format-propagation")
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# rdar://problem/14035604
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@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
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@dsym_test
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def test_with_dsym_and_run_command(self):
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"""Check if changing Format on an SBValue correctly propagates that new format to children as it should"""
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self.buildDsym()
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self.propagate_test_commands()
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# rdar://problem/14035604
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@dwarf_test
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def test_with_dwarf_and_run_command(self):
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"""Check if changing Format on an SBValue correctly propagates that new format to children as it should"""
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self.buildDwarf()
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self.propagate_test_commands()
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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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# Find the line number to break at.
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self.line = line_number('main.cpp', '// Set break point at this line.')
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def propagate_test_commands(self):
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"""Check for an issue where capping does not work because the Target pointer appears to be changing behind our backs."""
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self.runCmd("file a.out", CURRENT_EXECUTABLE_SET)
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lldbutil.run_break_set_by_file_and_line (self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
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self.runCmd("run", RUN_SUCCEEDED)
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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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# This is the function to remove the custom formats in order to have a
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# clean slate for the next test case.
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def cleanup():
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pass
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# Execute the cleanup function during test case tear down.
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self.addTearDownHook(cleanup)
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# extract the parent and the children
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frame = self.frame()
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parent = self.frame().FindVariable("f")
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self.assertTrue(parent != None and parent.IsValid(),"could not find f")
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X = parent.GetChildMemberWithName("X")
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self.assertTrue(X != None and X.IsValid(),"could not find X")
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Y = parent.GetChildMemberWithName("Y")
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self.assertTrue(Y != None and Y.IsValid(),"could not find Y")
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# check their values now
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self.assertTrue(X.GetValue() == "1", "X has an invalid value")
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self.assertTrue(Y.GetValue() == "2", "Y has an invalid value")
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# set the format on the parent
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parent.SetFormat(lldb.eFormatHex)
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self.assertTrue(X.GetValue() == "0x00000001", "X has not changed format")
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self.assertTrue(Y.GetValue() == "0x00000002", "Y has not changed format")
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# Step and check if the values make sense still
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self.runCmd("next")
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self.assertTrue(X.GetValue() == "0x00000004", "X has not become 4")
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self.assertTrue(Y.GetValue() == "0x00000002", "Y has not stuck as hex")
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# Check that children can still make their own choices
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Y.SetFormat(lldb.eFormatDecimal)
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self.assertTrue(X.GetValue() == "0x00000004", "X is still hex")
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self.assertTrue(Y.GetValue() == "2", "Y has not been reset")
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# Make a few more changes
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parent.SetFormat(lldb.eFormatDefault)
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X.SetFormat(lldb.eFormatHex)
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Y.SetFormat(lldb.eFormatDefault)
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self.assertTrue(X.GetValue() == "0x00000004", "X is not hex as it asked")
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self.assertTrue(Y.GetValue() == "2", "Y is not defaulted")
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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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