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"""
Test lldb data formatter subsystem.
"""
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class DataFormatterSynthValueTestCase(TestBase):
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break at.
self.line = line_number('main.cpp', 'break here')
@expectedFailureAll(bugnumber="llvm.org/pr50814", compiler="gcc")
def test_with_run_command(self):
"""Test using Python synthetic children provider to provide a value."""
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'])
# This is the function to remove the custom formats in order to have a
# clean slate for the next test case.
def cleanup():
self.runCmd('type format clear', check=False)
self.runCmd('type summary clear', check=False)
self.runCmd('type filter clear', check=False)
self.runCmd('type synth clear', check=False)
# Execute the cleanup function during test case tear down.
self.addTearDownHook(cleanup)
x = self.frame().FindVariable("x")
x.SetPreferSyntheticValue(True)
y = self.frame().FindVariable("y")
y.SetPreferSyntheticValue(True)
z = self.frame().FindVariable("z")
z.SetPreferSyntheticValue(True)
q = self.frame().FindVariable("q")
z.SetPreferSyntheticValue(True)
x_val = x.GetValueAsUnsigned
y_val = y.GetValueAsUnsigned
z_val = z.GetValueAsUnsigned
q_val = q.GetValueAsUnsigned
if self.TraceOn():
print(
"x_val = %s; y_val = %s; z_val = %s; q_val = %s" %
(x_val(), y_val(), z_val(), q_val()))
self.assertNotEqual(x_val(), 3, "x == 3 before synthetics")
self.assertNotEqual(y_val(), 4, "y == 4 before synthetics")
self.assertNotEqual(z_val(), 7, "z == 7 before synthetics")
self.assertNotEqual(q_val(), 8, "q == 8 before synthetics")
# now set up the synth
self.runCmd("script from myIntSynthProvider import *")
self.runCmd("type synth add -l myIntSynthProvider myInt")
self.runCmd("type synth add -l myArraySynthProvider myArray")
self.runCmd("type synth add -l myIntSynthProvider myIntAndStuff")
if self.TraceOn():
print(
"x_val = %s; y_val = %s; z_val = %s; q_val = %s" %
(x_val(), y_val(), z_val(), q_val()))
self.assertEqual(x_val(), 3, "x != 3 after synthetics")
self.assertEqual(y_val(), 4, "y != 4 after synthetics")
self.assertEqual(z_val(), 7, "z != 7 after synthetics")
self.assertEqual(q_val(), 8, "q != 8 after synthetics")
self.expect("frame variable x", substrs=['3'])
self.expect(
"frame variable x",
substrs=['theValue = 3'],
matching=False)
self.expect("frame variable q", substrs=['8'])
self.expect(
"frame variable q",
substrs=['theValue = 8'],
matching=False)
# check that an aptly defined synthetic provider does not affect
# one-lining
if not self.isAArch64Windows():
self.expect(
"expression struct Struct { myInt theInt{12}; }; Struct()",
substrs=['(theInt = 12)'])
# check that we can use a synthetic value in a summary
self.runCmd("type summary add hasAnInt -s ${var.theInt}")
hi = self.frame().FindVariable("hi")
self.assertEqual(hi.GetSummary(), "42")
ma = self.frame().FindVariable("ma")
self.assertTrue(ma.IsValid())
self.assertEqual(ma.GetNumChildren(15), 15)
self.assertEqual(ma.GetNumChildren(16), 16)
self.assertEqual(ma.GetNumChildren(17), 16)
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