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"""
Set breakpoints on objective-c class and instance methods in foundation.
Also lookup objective-c data types and evaluate expressions.
"""
import os, time
import unittest2
import lldb
from lldbtest import *
@unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
class FoundationTestCase(TestBase):
mydir = os.path.join("lang", "objc", "foundation")
def test_break_with_dsym(self):
"""Test setting objc breakpoints using '_regexp-break' and 'breakpoint set'."""
self.buildDsym()
self.break_on_objc_methods()
def test_break_with_dwarf(self):
"""Test setting objc breakpoints using '_regexp-break' and 'breakpoint set'."""
self.buildDwarf()
self.break_on_objc_methods()
#@unittest2.expectedFailure
# rdar://problem/8542091
# rdar://problem/8492646
def test_data_type_and_expr_with_dsym(self):
"""Lookup objective-c data types and evaluate expressions."""
self.buildDsym()
self.data_type_and_expr_objc()
#@unittest2.expectedFailure
# rdar://problem/8542091
# rdar://problem/8492646
def test_data_type_and_expr_with_dwarf(self):
"""Lookup objective-c data types and evaluate expressions."""
self.buildDwarf()
self.data_type_and_expr_objc()
@python_api_test
def test_print_ivars_correctly_with_dsym (self):
self.buildDsym()
self.print_ivars_correctly()
@python_api_test
def test_print_ivars_correctly_with_dwarf (self):
self.buildDwarf()
self.print_ivars_correctly()
def break_on_objc_methods(self):
"""Test setting objc breakpoints using '_regexp-break' and 'breakpoint set'."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Stop at +[NSString stringWithFormat:].
self.expect("_regexp-break +[NSString stringWithFormat:]", BREAKPOINT_CREATED,
substrs = ["Breakpoint created: 1: name = '+[NSString stringWithFormat:]', locations = 1"])
# Stop at -[MyString initWithNSString:].
self.expect("breakpoint set -n '-[MyString initWithNSString:]'", BREAKPOINT_CREATED,
startstr = "Breakpoint created: 2: name = '-[MyString initWithNSString:]', locations = 1")
# Stop at the "description" selector.
self.expect("breakpoint set -S description", BREAKPOINT_CREATED,
startstr = "Breakpoint created: 3: name = 'description', locations = 1")
# Stop at -[NSAutoreleasePool release].
self.expect("_regexp-break -[NSAutoreleasePool release]", BREAKPOINT_CREATED,
substrs = ["Breakpoint created: 4: name = '-[NSAutoreleasePool release]', locations = 1"])
self.runCmd("run", RUN_SUCCEEDED)
# First stop is +[NSString stringWithFormat:].
self.expect("thread backtrace", "Stop at +[NSString stringWithFormat:]",
substrs = ["Foundation`+[NSString stringWithFormat:]"])
self.runCmd("process continue")
# Second stop is still +[NSString stringWithFormat:].
self.expect("thread backtrace", "Stop at +[NSString stringWithFormat:]",
substrs = ["Foundation`+[NSString stringWithFormat:]"])
self.runCmd("process continue")
# Followed by a.out`-[MyString initWithNSString:].
self.expect("thread backtrace", "Stop at a.out`-[MyString initWithNSString:]",
substrs = ["a.out`-[MyString initWithNSString:]"])
self.runCmd("process continue")
# Followed by -[MyString description].
self.expect("thread backtrace", "Stop at -[MyString description]",
substrs = ["a.out`-[MyString description]"])
self.runCmd("process continue")
# Followed by the same -[MyString description].
self.expect("thread backtrace", "Stop at -[MyString description]",
substrs = ["a.out`-[MyString description]"])
self.runCmd("process continue")
# Followed by -[NSAutoreleasePool release].
self.expect("thread backtrace", "Stop at -[NSAutoreleasePool release]",
substrs = ["Foundation`-[NSAutoreleasePool release]"])
def setUp(self):
# Call super's setUp().
TestBase.setUp(self)
# Find the line number to break inside main().
self.main_source = "main.m"
self.line = line_number(self.main_source, '// Set break point at this line.')
def data_type_and_expr_objc(self):
"""Lookup objective-c data types and evaluate expressions."""
exe = os.path.join(os.getcwd(), "a.out")
self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
# Stop at -[MyString description].
self.expect("breakpoint set -n '-[MyString description]", BREAKPOINT_CREATED,
startstr = "Breakpoint created: 1: name = '-[MyString description]', locations = 1")
self.runCmd("run", RUN_SUCCEEDED)
# The backtrace should show we stop at -[MyString description].
self.expect("thread backtrace", "Stop at -[MyString description]",
substrs = ["a.out`-[MyString description]"])
# Lookup objc data type MyString and evaluate some expressions.
self.expect("image lookup -t NSString", DATA_TYPES_DISPLAYED_CORRECTLY,
substrs = ['name = "NSString"',
'clang_type = "@interface NSString'])
self.expect("image lookup -t MyString", DATA_TYPES_DISPLAYED_CORRECTLY,
substrs = ['name = "MyString"',
'clang_type = "@interface MyString',
'NSString * str;',
'NSDate * date;'])
self.expect("frame variable -T -s", VARIABLES_DISPLAYED_CORRECTLY,
substrs = ["ARG: (MyString *) self"],
patterns = ["ARG: \(.*\) _cmd",
"(objc_selector *)|(SEL)"])
# rdar://problem/8651752
# don't crash trying to ask clang how many children an empty record has
self.runCmd("frame variable *_cmd")
# rdar://problem/8492646
# test/foundation fails after updating to tot r115023
# self->str displays nothing as output
self.expect("frame variable -T self->str", VARIABLES_DISPLAYED_CORRECTLY,
startstr = "(NSString *) self->str")
# rdar://problem/8447030
# 'frame variable self->date' displays the wrong data member
self.expect("frame variable -T self->date", VARIABLES_DISPLAYED_CORRECTLY,
startstr = "(NSDate *) self->date")
# This should display the str and date member fields as well.
self.expect("frame variable -T *self", VARIABLES_DISPLAYED_CORRECTLY,
substrs = ["(MyString) *self",
"(NSString *) str",
"(NSDate *) date"])
# This should fail expectedly.
self.expect("expression self->non_existent_member",
COMMAND_FAILED_AS_EXPECTED, error=True,
startstr = "error: 'MyString' does not have a member named 'non_existent_member'")
# Use expression parser.
self.runCmd("expression self->str")
self.runCmd("expression self->date")
# (lldb) expression self->str
# error: instance variable 'str' is protected
# error: 1 errors parsing expression
#
# (lldb) expression self->date
# error: instance variable 'date' is protected
# error: 1 errors parsing expression
#
self.runCmd("breakpoint delete 1")
self.expect("breakpoint set -f main.m -l %d" % self.line,
BREAKPOINT_CREATED,
startstr = "Breakpoint created: 2: file ='main.m', line = %d, locations = 1" %
self.line)
self.runCmd("process continue")
# rdar://problem/8542091
# test/foundation: expr -o -- my not working?
#
# Test new feature with r115115:
# Add "-o" option to "expression" which prints the object description if available.
self.expect("expression -o -- my", "Object description displayed correctly",
patterns = ["Hello from.*a.out.*with timestamp: "])
# See: <rdar://problem/8717050> lldb needs to use the ObjC runtime symbols for ivar offsets
# Only fails for the ObjC 2.0 runtime.
def print_ivars_correctly(self) :
exe = os.path.join(os.getcwd(), "a.out")
target = self.dbg.CreateTarget(exe)
self.assertTrue(target, VALID_TARGET)
break1 = target.BreakpointCreateByLocation(self.main_source, self.line)
self.assertTrue(break1, VALID_BREAKPOINT)
# Now launch the process, and do not stop at entry point.
process = target.LaunchSimple(None, None, os.getcwd())
self.assertTrue(process, PROCESS_IS_VALID)
# The stop reason of the thread should be breakpoint.
thread = process.GetThreadAtIndex(0)
if thread.GetStopReason() != lldb.eStopReasonBreakpoint:
from lldbutil import stop_reason_to_str
self.fail(STOPPED_DUE_TO_BREAKPOINT_WITH_STOP_REASON_AS %
stop_reason_to_str(thread.GetStopReason()))
# Make sure we stopped at the first breakpoint.
cur_frame = thread.GetFrameAtIndex(0)
line_number = cur_frame.GetLineEntry().GetLine()
self.assertTrue (line_number == self.line, "Hit the first breakpoint.")
my_var = cur_frame.FindVariable("my")
self.assertTrue(my_var, "Made a variable object for my")
str_var = cur_frame.FindVariable("str")
self.assertTrue(str_var, "Made a variable object for str")
# Now make sure that the my->str == str:
my_str_var = my_var.GetChildMemberWithName("str")
self.assertTrue(my_str_var, "Found a str ivar in my")
str_value = int(str_var.GetValue(), 0)
my_str_value = int(my_str_var.GetValue(), 0)
self.assertTrue(str_value == my_str_value, "Got the correct value for my->str")
if __name__ == '__main__':
import atexit
lldb.SBDebugger.Initialize()
atexit.register(lambda: lldb.SBDebugger.Terminate())
unittest2.main()
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