lldb/test/API/lang/c/blocks/TestBlocks.py

   1 """Test that lldb can invoke blocks and access variables inside them"""
   2
   3
   4 import lldb
   5 from lldbsuite.test.lldbtest import *
   6 from lldbsuite.test.decorators import *
   7 import lldbsuite.test.lldbutil as lldbutil
   8
   9
  10 class BlocksTestCase(TestBase):
  11     lines = []
  12
  13     def setUp(self):
  14         # Call super's setUp().
  15         TestBase.setUp(self)
  16         # Find the line numbers to break at.
  17         self.lines.append(line_number("main.c", "// Set breakpoint 0 here."))
  18         self.lines.append(line_number("main.c", "// Set breakpoint 1 here."))
  19         self.lines.append(line_number("main.c", "// Set breakpoint 2 here."))
  20
  21     def launch_common(self):
  22         self.build()
  23         exe = self.getBuildArtifact("a.out")
  24         self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
  25
  26         self.is_started = False
  27
  28         # Break inside the foo function which takes a bar_ptr argument.
  29         for line in self.lines:
  30             lldbutil.run_break_set_by_file_and_line(
  31                 self, "main.c", line, num_expected_locations=1, loc_exact=True
  32             )
  33
  34         self.wait_for_breakpoint()
  35
  36     @skipUnlessDarwin
  37     def test_expr(self):
  38         self.launch_common()
  39
  40         self.expect("expression a + b", VARIABLES_DISPLAYED_CORRECTLY, substrs=["= 7"])
  41
  42         self.expect("expression c", VARIABLES_DISPLAYED_CORRECTLY, substrs=["= 1"])
  43
  44         self.wait_for_breakpoint()
  45
  46         # This should display correctly.
  47         self.expect(
  48             "expression (int)neg (-12)", VARIABLES_DISPLAYED_CORRECTLY, substrs=["= 12"]
  49         )
  50
  51         self.wait_for_breakpoint()
  52
  53         self.expect_expr("h(cg)", result_type="int", result_value="42")
  54
  55     @skipUnlessDarwin
  56     def test_define(self):
  57         self.launch_common()
  58
  59         self.runCmd(
  60             "expression int (^$add)(int, int) = ^int(int a, int b) { return a + b; };"
  61         )
  62         self.expect(
  63             "expression $add(2,3)", VARIABLES_DISPLAYED_CORRECTLY, substrs=[" = 5"]
  64         )
  65
  66         self.runCmd("expression int $a = 3")
  67         self.expect(
  68             "expression int (^$addA)(int) = ^int(int b) { return $a + b; };",
  69             "Proper error is reported on capture",
  70             error=True,
  71         )
  72
  73     def wait_for_breakpoint(self):
  74         if not self.is_started:
  75             self.is_started = True
  76             self.runCmd("process launch", RUN_SUCCEEDED)
  77         else:
  78             self.runCmd("process continue", RUN_SUCCEEDED)
  79
  80         # The stop reason of the thread should be breakpoint.
  81         self.expect(
  82             "thread list",
  83             STOPPED_DUE_TO_BREAKPOINT,
  84             substrs=["stopped", "stop reason = breakpoint"],
  85         )