lldb/test/API/lang/objc/foundation/TestConstStrings.py

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