TestGlobalVariables.py revision a1b9a90b7aef446302de9b845dc4f3b0e1473aa7 
1"""Show global variables and check that they do indeed have global scopes."""
2
3import os, time
4import unittest2
5import lldb
6from lldbtest import *
7
8class GlobalVariablesTestCase(TestBase):
9
10    mydir = os.path.join("lang", "c", "global_variables")
11
12    @unittest2.skipUnless(sys.platform.startswith("darwin"), "requires Darwin")
13    def test_with_dsym(self):
14        """Test 'frame variable -s -a' which omits args and shows scopes."""
15        self.buildDsym()
16        self.global_variables()
17
18    def test_with_dwarf(self):
19        """Test 'frame variable -s -a' which omits args and shows scopes."""
20        self.buildDwarf()
21        self.global_variables()
22
23    def setUp(self):
24        # Call super's setUp().
25        TestBase.setUp(self)
26        # Find the line number to break inside main().
27        self.line = line_number('main.c', '// Set break point at this line.')
28
29    def global_variables(self):
30        """Test 'frame variable -s -a' which omits args and shows scopes."""
31        exe = os.path.join(os.getcwd(), "a.out")
32        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
33
34        # Break inside the main.
35        self.expect("breakpoint set -f main.c -l %d" % self.line,
36                    BREAKPOINT_CREATED,
37            startstr = "Breakpoint created: 1: file ='main.c', line = %d, locations = 1" %
38                        self.line)
39
40        self.runCmd("run", RUN_SUCCEEDED)
41
42        # The stop reason of the thread should be breakpoint.
43        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
44            substrs = ['stopped',
45                       'stop reason = breakpoint'])
46
47        # The breakpoint should have a hit count of 1.
48        self.expect("breakpoint list -f", BREAKPOINT_HIT_ONCE,
49            substrs = [' resolved, hit count = 1'])
50
51        # Check that GLOBAL scopes are indicated for the variables.
52        self.expect("frame variable -T -s -g -a", VARIABLES_DISPLAYED_CORRECTLY,
53            substrs = ['GLOBAL: (int) g_file_global_int = 42',
54                       'GLOBAL: (const char *) g_file_global_cstr',
55                       '"g_file_global_cstr"',
56                       'STATIC: (const char *) g_file_static_cstr',
57                       '"g_file_static_cstr"',
58                       'GLOBAL: (int) g_common_1 = 21'])
59
60        # 'frame variable' should support address-of operator.
61        self.runCmd("frame variable &g_file_global_int")
62
63        # Exercise the 'target variable' command to display globals in a.c file.
64        self.expect("target variable g_a", VARIABLES_DISPLAYED_CORRECTLY,
65                    substrs = ['g_a', '123'])
66        self.expect("target variable g_marked_spot.x", VARIABLES_DISPLAYED_CORRECTLY,
67                    substrs = ['g_marked_spot.x', '20'])
68
69        # rdar://problem/9747668
70        # runCmd: target variable g_marked_spot.y
71        # output: (int) g_marked_spot.y = <a.o[0x214] can't be resolved,  in not currently loaded.
72        #         >
73        self.expect("target variable g_marked_spot.y", VARIABLES_DISPLAYED_CORRECTLY,
74                    substrs = ['g_marked_spot.y', '21'])
75        self.expect("target variable g_marked_spot.y", VARIABLES_DISPLAYED_CORRECTLY, matching=False,
76                    substrs = ["can't be resolved"])
77
78
79if __name__ == '__main__':
80    import atexit
81    lldb.SBDebugger.Initialize()
82    atexit.register(lambda: lldb.SBDebugger.Terminate())
83    unittest2.main()
84