lldb/packages/Python/lldbsuite/test/lang/cpp/char1632_t/TestChar1632T.py

# coding=utf8
"""
Test that the C++11 support for char16_t and char32_t works correctly.
"""

from __future__ import print_function



import os, time
import lldb
from lldbsuite.test.lldbtest import *
import lldbsuite.test.lldbutil as lldbutil

class Char1632TestCase(TestBase):

    mydir = TestBase.compute_mydir(__file__)

    def setUp(self):
        # Call super's setUp().
        TestBase.setUp(self)
        # Find the line number to break for main.cpp.
        self.source = 'main.cpp'
        self.lines = [ line_number(self.source, '// breakpoint1'), 
                       line_number(self.source, '// breakpoint2') ]

    @expectedFailureIcc # ICC (13.1) does not emit the DW_TAG_base_type for char16_t and char32_t.
    @expectedFailureWindows("llvm.org/pr24489: Name lookup not working correctly on Windows")
    def test(self):
        """Test that the C++11 support for char16_t and char32_t works correctly."""
        self.build()
        exe = os.path.join(os.getcwd(), "a.out")

        # Create a target by the debugger.
        target = self.dbg.CreateTarget(exe)
        self.assertTrue(target, VALID_TARGET)

        # Set breakpoints
        for line in self.lines:
            lldbutil.run_break_set_by_file_and_line (self, "main.cpp", line)

        # Now launch the process, and do not stop at entry point and stop at breakpoint1
        process = target.LaunchSimple (None, None, self.get_process_working_directory())

        if not process:
            self.fail("SBTarget.Launch() failed")

        if self.TraceOn():
             self.runCmd("frame variable")

        # Check that we correctly report the const types
        self.expect("frame variable cs16 cs32",
            substrs = ['(const char16_t *) cs16 = ','(const char32_t *) cs32 = ','u"hello world ྒྙྐ"','U"hello world ྒྙྐ"'])

        # Check that we correctly report the non-const types
        self.expect("frame variable s16 s32",
            substrs = ['(char16_t *) s16 = ','(char32_t *) s32 = ','u"ﺸﺵۻ"','U"ЕЙРГЖО"'])

        # Check that we correctly report the array types
        self.expect("frame variable as16 as32",
            patterns = ['\(char16_t \[[0-9]+\]\) as16 = ', '\(char32_t \[[0-9]+\]\) as32 = '],
            substrs = ['u"ﺸﺵۻ"','U"ЕЙРГЖО"'])

        self.runCmd("next") # step to after the string is nullified

        # check that we don't crash on NULL
        self.expect("frame variable s32",
            substrs = ['(char32_t *) s32 = 0x00000000'])

        # continue and hit breakpoint2
        self.runCmd("continue")

        # check that the new strings show
        self.expect("frame variable s16 s32",
            substrs = ['(char16_t *) s16 = 0x','(char32_t *) s32 = ','"色ハ匂ヘト散リヌルヲ"','"෴"'])

        # check the same as above for arrays
        self.expect("frame variable as16 as32",
            patterns = ['\(char16_t \[[0-9]+\]\) as16 = ', '\(char32_t \[[0-9]+\]\) as32 = '],
            substrs = ['"色ハ匂ヘト散リヌルヲ"','"෴"'])

        # check that zero values are properly handles
        self.expect('frame variable cs16_zero', substrs=["U+0000 u'\\0'"])
        self.expect('frame variable cs32_zero', substrs=["U+0x00000000 U'\\0'"])
        self.expect('expression cs16_zero', substrs=["U+0000 u'\\0'"])
        self.expect('expression cs32_zero', substrs=["U+0x00000000 U'\\0'"])

        # Check that we can run expressions that return charN_t
        self.expect("expression u'a'",substrs = ['(char16_t) $',"61 u'a'"])
        self.expect("expression U'a'",substrs = ['(char32_t) $',"61 U'a'"])