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"""Test the go expression parser/interpreter."""
import os
import time
import unittest2
import lldb
from lldbsuite.test.decorators import *
from lldbsuite.test.lldbtest import *
from lldbsuite.test import lldbutil
class TestGoUserExpression(TestBase):
mydir = TestBase.compute_mydir(__file__)
@add_test_categories(['pyapi'])
@skipIfRemote # Not remote test suit ready
@skipIfFreeBSD # Test hanging on FreeBSD - llvm.org/pr37194
@skipUnlessGoInstalled
def test_with_dsym_and_python_api(self):
"""Test GoASTUserExpress."""
self.buildGo()
self.launchProcess()
self.go_expressions()
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line numbers to break inside main().
self.main_source = "main.go"
self.break_line = line_number(
self.main_source, '// Set breakpoint here.')
def check_builtin(self, name, size=0, typeclass=lldb.eTypeClassBuiltin):
tl = self.target().FindTypes(name)
self.assertEqual(1, len(tl))
t = list(tl)[0]
self.assertEqual(name, t.name)
self.assertEqual(typeclass, t.type)
if size > 0:
self.assertEqual(size, t.size)
def launchProcess(self):
exe = self.getBuildArtifact("a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
bpt = target.BreakpointCreateByLocation(
self.main_source, self.break_line)
self.assertTrue(bpt, 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_list = lldbutil.get_threads_stopped_at_breakpoint(process, bpt)
# Make sure we stopped at the first breakpoint.
self.assertTrue(
len(thread_list) != 0,
"No thread stopped at our breakpoint.")
self.assertTrue(len(thread_list) == 1,
"More than one thread stopped at our breakpoint.")
frame = thread_list[0].GetFrameAtIndex(0)
self.assertTrue(frame, "Got a valid frame 0 frame.")
def go_expressions(self):
frame = self.frame()
v = frame.EvaluateExpression("1")
self.assertEqual(1, v.GetValueAsSigned())
x = frame.EvaluateExpression("x")
self.assertEqual(22, x.GetValueAsSigned())
a = frame.EvaluateExpression("a")
self.assertEqual(3, a.GetNumChildren())
a0 = a.GetChildAtIndex(0)
self.assertEqual(8, a0.GetValueAsSigned())
# Array indexing
a0 = frame.EvaluateExpression("a[0]")
self.assertEqual(8, a0.GetValueAsSigned())
# Slice indexing
b1 = frame.EvaluateExpression("b[1]")
self.assertEqual(9, b1.GetValueAsSigned())
# Test global in this package
g = frame.EvaluateExpression("myGlobal")
self.assertEqual(17, g.GetValueAsSigned(), str(g))
# Global with package name
g = frame.EvaluateExpression("main.myGlobal")
self.assertEqual(17, g.GetValueAsSigned(), str(g))
# Global with quoted package name
g = frame.EvaluateExpression('"main".myGlobal')
self.assertEqual(17, g.GetValueAsSigned(), str(g))
# Casting with package local type
s = frame.EvaluateExpression("*(*myStruct)(i.data)")
sb = s.GetChildMemberWithName("a")
self.assertEqual(2, sb.GetValueAsSigned())
# casting with explicit package
s = frame.EvaluateExpression("*(*main.myStruct)(i.data)")
sb = s.GetChildMemberWithName("a")
self.assertEqual(2, sb.GetValueAsSigned())
# Casting quoted package
s = frame.EvaluateExpression('*(*"main".myStruct)(i.data)')
sb = s.GetChildMemberWithName("b")
self.assertEqual(-1, sb.GetValueAsSigned())
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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