TestStaticVariables.py
6.41 KB
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"""
Test display and Python APIs on file and class static variables.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class StaticVariableTestCase(TestBase):
mydir = TestBase.compute_mydir(__file__)
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break at.
self.line = line_number('main.cpp', '// Set break point at this line.')
def test_with_run_command(self):
"""Test that file and class static variables display correctly."""
self.build()
self.runCmd("file " + self.getBuildArtifact("a.out"), CURRENT_EXECUTABLE_SET)
lldbutil.run_break_set_by_file_and_line(
self, "main.cpp", self.line, num_expected_locations=1, loc_exact=True)
self.runCmd("run", RUN_SUCCEEDED)
# The stop reason of the thread should be breakpoint.
self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
substrs=['stopped',
'stop reason = breakpoint'])
# Global variables are no longer displayed with the "frame variable"
# command.
self.expect(
'target variable A::g_points',
VARIABLES_DISPLAYED_CORRECTLY,
patterns=['\(PointType \[[1-9]*\]\) A::g_points = {'])
self.expect('target variable g_points', VARIABLES_DISPLAYED_CORRECTLY,
substrs=['(PointType [2]) g_points'])
# On Mac OS X, gcc 4.2 emits the wrong debug info for A::g_points.
# A::g_points is an array of two elements.
if self.platformIsDarwin() or self.getPlatform() == "linux":
self.expect(
"target variable A::g_points[1].x",
VARIABLES_DISPLAYED_CORRECTLY,
startstr="(int) A::g_points[1].x = 11")
@expectedFailureAll(
compiler=["gcc"],
bugnumber="Compiler emits incomplete debug info")
@expectedFailureAll(
compiler=["clang"],
compiler_version=["<", "3.9"],
bugnumber='llvm.org/pr20550')
def test_with_run_command_complete(self):
"""
Test that file and class static variables display correctly with
complete debug information.
"""
self.build()
target = self.dbg.CreateTarget(self.getBuildArtifact("a.out"))
self.assertTrue(target, VALID_TARGET)
# Global variables are no longer displayed with the "frame variable"
# command.
self.expect(
'target variable A::g_points',
VARIABLES_DISPLAYED_CORRECTLY,
patterns=[
'\(PointType \[[1-9]*\]\) A::g_points = {', '(x = 1, y = 2)',
'(x = 11, y = 22)'
])
# Ensure that we take the context into account and only print
# A::g_points.
self.expect(
'target variable A::g_points',
VARIABLES_DISPLAYED_CORRECTLY,
matching=False,
patterns=['(x = 3, y = 4)', '(x = 33, y = 44)'])
# Finally, ensure that we print both points when not specifying a
# context.
self.expect(
'target variable g_points',
VARIABLES_DISPLAYED_CORRECTLY,
substrs=[
'(PointType [2]) g_points', '(x = 1, y = 2)',
'(x = 11, y = 22)', '(x = 3, y = 4)', '(x = 33, y = 44)'
])
@expectedFailureAll(
compiler=["gcc"],
bugnumber="Compiler emits incomplete debug info")
@expectedFailureAll(
compiler=["clang"],
compiler_version=["<", "3.9"],
bugnumber='llvm.org/pr20550')
@expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr24764")
@add_test_categories(['pyapi'])
def test_with_python_api(self):
"""Test Python APIs on file and class static variables."""
self.build()
exe = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
breakpoint = target.BreakpointCreateByLocation("main.cpp", self.line)
self.assertTrue(breakpoint, VALID_BREAKPOINT)
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(
None, None, self.get_process_working_directory())
self.assertTrue(process, PROCESS_IS_VALID)
# The stop reason of the thread should be breakpoint.
thread = lldbutil.get_stopped_thread(
process, lldb.eStopReasonBreakpoint)
self.assertIsNotNone(thread)
# Get the SBValue of 'A::g_points' and 'g_points'.
frame = thread.GetFrameAtIndex(0)
# arguments => False
# locals => False
# statics => True
# in_scope_only => False
valList = frame.GetVariables(False, False, True, False)
for val in valList:
self.DebugSBValue(val)
name = val.GetName()
self.assertTrue(name in ['g_points', 'A::g_points'])
if name == 'g_points':
self.assertTrue(
val.GetValueType() == lldb.eValueTypeVariableStatic)
self.assertEqual(val.GetNumChildren(), 2)
elif name == 'A::g_points':
self.assertTrue(
val.GetValueType() == lldb.eValueTypeVariableGlobal)
self.assertEqual(val.GetNumChildren(), 2)
child1 = val.GetChildAtIndex(1)
self.DebugSBValue(child1)
child1_x = child1.GetChildAtIndex(0)
self.DebugSBValue(child1_x)
self.assertTrue(child1_x.GetTypeName() == 'int' and
child1_x.GetValue() == '11')
# SBFrame.FindValue() should also work.
val = frame.FindValue("A::g_points", lldb.eValueTypeVariableGlobal)
self.DebugSBValue(val)
self.assertTrue(val.GetName() == 'A::g_points')
# Also exercise the "parameter" and "local" scopes while we are at it.
val = frame.FindValue("argc", lldb.eValueTypeVariableArgument)
self.DebugSBValue(val)
self.assertTrue(val.GetName() == 'argc')
val = frame.FindValue("argv", lldb.eValueTypeVariableArgument)
self.DebugSBValue(val)
self.assertTrue(val.GetName() == 'argv')
val = frame.FindValue("hello_world", lldb.eValueTypeVariableLocal)
self.DebugSBValue(val)
self.assertTrue(val.GetName() == 'hello_world')