packages/Python/lldbsuite/test/lang/objc/foundation/TestConstStrings.py

   1 """
   2 Test that objective-c constant strings are generated correctly by the expression
   3 parser.
   4 """
   5
   6 from __future__ import print_function
   7
   8
   9 import os
  10 import time
  11 import lldb
  12 from lldbsuite.test.decorators import *
  13 from lldbsuite.test.lldbtest import *
  14 from lldbsuite.test import lldbutil
  15
  16
  17 class ConstStringTestCase(TestBase):
  18
  19     mydir = TestBase.compute_mydir(__file__)
  20     d = {'OBJC_SOURCES': 'const-strings.m'}
  21
  22     def setUp(self):
  23         # Call super's setUp().
  24         TestBase.setUp(self)
  25         # Find the line number to break inside main().
  26         self.main_source = "const-strings.m"
  27         self.line = line_number(self.main_source, '// Set breakpoint here.')
  28
  29     @skipUnlessDarwin
  30     def test_break(self):
  31         """Test constant string generation amd comparison by the expression parser."""
  32         self.build(dictionary=self.d)
  33         self.setTearDownCleanup(self.d)
  34
  35         exe = os.path.join(os.getcwd(), "a.out")
  36         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  37
  38         lldbutil.run_break_set_by_file_and_line(
  39             self,
  40             self.main_source,
  41             self.line,
  42             num_expected_locations=1,
  43             loc_exact=True)
  44
  45         self.runCmd("run", RUN_SUCCEEDED)
  46         self.expect("process status", STOPPED_DUE_TO_BREAKPOINT,
  47                     substrs=[" at %s:%d" % (self.main_source, self.line),
  48                              "stop reason = breakpoint"])
  49
  50         self.expect('expression (int)[str compare:@"hello"]',
  51                     startstr="(int) $0 = 0")
  52         self.expect('expression (int)[str compare:@"world"]',
  53                     startstr="(int) $1 = -1")
  54
  55         # Test empty strings, too.
  56         self.expect('expression (int)[@"" length]',
  57                     startstr="(int) $2 = 0")
  58
  59         self.expect('expression (int)[@"123" length]',
  60                     startstr="(int) $3 = 3")