""" Test many basic expression commands and SBFrame.EvaluateExpression() API. Test cases: o test_many_expr_commands: Test many basic expression commands. o test_evaluate_expression_python: Use Python APIs (SBFrame.EvaluateExpression()) to evaluate expressions. o test_expr_commands_can_handle_quotes: Throw some expression commands with quotes at lldb. """ from __future__ import print_function import unittest2 import os, time import lldb import lldbsuite.test.lldbutil as lldbutil from lldbsuite.test.lldbtest import * class BasicExprCommandsTestCase(TestBase): mydir = TestBase.compute_mydir(__file__) def setUp(self): # Call super's setUp(). TestBase.setUp(self) # Find the line number to break for main.c. self.line = line_number('main.cpp', '// Please test many expressions while stopped at this line:') # Disable confirmation prompt to avoid infinite wait self.runCmd("settings set auto-confirm true") self.addTearDownHook(lambda: self.runCmd("settings clear auto-confirm")) def build_and_run(self): """These basic expression commands should work as expected.""" self.build() self.runCmd("file a.out", CURRENT_EXECUTABLE_SET) lldbutil.run_break_set_by_file_and_line (self, "main.cpp", self.line, num_expected_locations=1, loc_exact=False) self.runCmd("run", RUN_SUCCEEDED) @unittest2.expectedFailure("llvm.org/pr17135 APFloat::toString does not identify the correct (i.e. least) precision.") def test_floating_point_expr_commands(self): self.build_and_run() self.expect("expression 2.234f", patterns = ["\(float\) \$.* = 2\.234"]) # (float) $2 = 2.234 @expectedFailureWindows("llvm.org/pr21765") def test_many_expr_commands(self): self.build_and_run() self.expect("expression 2", patterns = ["\(int\) \$.* = 2"]) # (int) $0 = 1 self.expect("expression 2ull", patterns = ["\(unsigned long long\) \$.* = 2"]) # (unsigned long long) $1 = 2 self.expect("expression 0.5f", patterns = ["\(float\) \$.* = 0\.5"]) # (float) $2 = 0.5 self.expect("expression 2.234", patterns = ["\(double\) \$.* = 2\.234"]) # (double) $3 = 2.234 self.expect("expression 2+3", patterns = ["\(int\) \$.* = 5"]) # (int) $4 = 5 self.expect("expression argc", patterns = ["\(int\) \$.* = 1"]) # (int) $5 = 1 self.expect("expression argc + 22", patterns = ["\(int\) \$.* = 23"]) # (int) $6 = 23 self.expect("expression argv", patterns = ["\(const char \*\*\) \$.* = 0x"]) # (const char *) $7 = ... self.expect("expression argv[0]", substrs = ["(const char *)", "a.out"]) # (const char *) $8 = 0x... "/Volumes/data/lldb/svn/trunk/test/expression_command/test/a.out" @add_test_categories(['pyapi']) @expectedFailureWindows # Test crashes def test_evaluate_expression_python(self): """Test SBFrame.EvaluateExpression() API for evaluating an expression.""" self.build() exe = os.path.join(os.getcwd(), "a.out") target = self.dbg.CreateTarget(exe) self.assertTrue(target, VALID_TARGET) # Create the breakpoint. filespec = lldb.SBFileSpec("main.cpp", False) breakpoint = target.BreakpointCreateByLocation(filespec, self.line) self.assertTrue(breakpoint, VALID_BREAKPOINT) # Verify the breakpoint just created. self.expect(str(breakpoint), BREAKPOINT_CREATED, exe=False, substrs = ['main.cpp', str(self.line)]) # Launch the process, and do not stop at the entry point. # Pass 'X Y Z' as the args, which makes argc == 4. process = target.LaunchSimple (['X', 'Y', 'Z'], None, self.get_process_working_directory()) if not process: self.fail("SBTarget.LaunchProcess() failed") if process.GetState() != lldb.eStateStopped: self.fail("Process should be in the 'stopped' state, " "instead the actual state is: '%s'" % lldbutil.state_type_to_str(process.GetState())) # The stop reason of the thread should be breakpoint. thread = process.GetThreadAtIndex(0) if thread.GetStopReason() != lldb.eStopReasonBreakpoint: from lldbsuite.test.lldbutil import stop_reason_to_str self.fail(STOPPED_DUE_TO_BREAKPOINT_WITH_STOP_REASON_AS % stop_reason_to_str(thread.GetStopReason())) # The filename of frame #0 should be 'main.cpp' and function is main. self.expect(lldbutil.get_filenames(thread)[0], "Break correctly at main.cpp", exe=False, startstr = "main.cpp") self.expect(lldbutil.get_function_names(thread)[0], "Break correctly at main()", exe=False, startstr = "main") # We should be stopped on the breakpoint with a hit count of 1. self.assertTrue(breakpoint.GetHitCount() == 1, BREAKPOINT_HIT_ONCE) # # Use Python API to evaluate expressions while stopped in a stack frame. # frame = thread.GetFrameAtIndex(0) val = frame.EvaluateExpression("2.234") self.expect(val.GetValue(), "2.345 evaluated correctly", exe=False, startstr = "2.234") self.expect(val.GetTypeName(), "2.345 evaluated correctly", exe=False, startstr = "double") self.DebugSBValue(val) val = frame.EvaluateExpression("argc") self.expect(val.GetValue(), "Argc evaluated correctly", exe=False, startstr = "4") self.DebugSBValue(val) val = frame.EvaluateExpression("*argv[1]") self.expect(val.GetValue(), "Argv[1] evaluated correctly", exe=False, startstr = "'X'") self.DebugSBValue(val) val = frame.EvaluateExpression("*argv[2]") self.expect(val.GetValue(), "Argv[2] evaluated correctly", exe=False, startstr = "'Y'") self.DebugSBValue(val) val = frame.EvaluateExpression("*argv[3]") self.expect(val.GetValue(), "Argv[3] evaluated correctly", exe=False, startstr = "'Z'") self.DebugSBValue(val) callee_break = target.BreakpointCreateByName ("a_function_to_call", None) self.assertTrue(callee_break.GetNumLocations() > 0) # Make sure ignoring breakpoints works from the command line: self.expect("expression -i true -- a_function_to_call()", substrs = ['(int) $', ' 1']) self.assertTrue (callee_break.GetHitCount() == 1) # Now try ignoring breakpoints using the SB API's: options = lldb.SBExpressionOptions() options.SetIgnoreBreakpoints(True) value = frame.EvaluateExpression('a_function_to_call()', options) self.assertTrue (value.IsValid()) self.assertTrue (value.GetValueAsSigned(0) == 2) self.assertTrue (callee_break.GetHitCount() == 2) # rdar://problem/8686536 # CommandInterpreter::HandleCommand is stripping \'s from input for WantsRawCommand commands @expectedFailureWindows("llvm.org/pr21765") def test_expr_commands_can_handle_quotes(self): """Throw some expression commands with quotes at lldb.""" self.build() self.runCmd("file a.out", CURRENT_EXECUTABLE_SET) lldbutil.run_break_set_by_file_and_line(self, "main.cpp", self.line, num_expected_locations=1,loc_exact=False) self.runCmd("run", RUN_SUCCEEDED) # runCmd: expression 'a' # output: (char) $0 = 'a' self.expect("expression 'a'", substrs = ['(char) $', "'a'"]) # runCmd: expression (int) printf ("\n\n\tHello there!\n") # output: (int) $1 = 16 self.expect(r'''expression (int) printf ("\n\n\tHello there!\n")''', substrs = ['(int) $', '16']) # runCmd: expression (int) printf("\t\x68\n") # output: (int) $2 = 3 self.expect(r'''expression (int) printf("\t\x68\n")''', substrs = ['(int) $', '3']) # runCmd: expression (int) printf("\"\n") # output: (int) $3 = 2 self.expect(r'''expression (int) printf("\"\n")''', substrs = ['(int) $', '2']) # runCmd: expression (int) printf("'\n") # output: (int) $4 = 2 self.expect(r'''expression (int) printf("'\n")''', substrs = ['(int) $', '2']) # runCmd: command alias print_hi expression (int) printf ("\n\tHi!\n") # output: self.runCmd(r'''command alias print_hi expression (int) printf ("\n\tHi!\n")''') # This fails currently. self.expect('print_hi', substrs = ['(int) $', '6'])