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1"""
2Test error cases for the 'watchpoint set' command to make sure it errors out when necessary.
3"""
4
5import os, time
6import unittest2
7import lldb
8from lldbtest import *
9import lldbutil
10
11class WatchpointSetErrorTestCase(TestBase):
12
13    mydir = os.path.join("functionalities", "watchpoint", "watchpoint_set_command")
14
15    def test_error_cases_with_watchpoint_set(self):
16        """Test error cases with the 'watchpoint set' command."""
17        self.buildDwarf(dictionary=self.d)
18        self.setTearDownCleanup(dictionary=self.d)
19        self.error_cases_with_watchpoint_set()
20
21    def setUp(self):
22        # Call super's setUp().
23        TestBase.setUp(self)
24        # Our simple source filename.
25        self.source = 'main.cpp'
26        # Find the line number to break inside main().
27        self.line = line_number(self.source, '// Set break point at this line.')
28        # Build dictionary to have unique executable names for each test method.
29        self.exe_name = self.testMethodName
30        self.d = {'CXX_SOURCES': self.source, 'EXE': self.exe_name}
31
32    def error_cases_with_watchpoint_set(self):
33        """Test error cases with the 'watchpoint set' command."""
34        exe = os.path.join(os.getcwd(), self.exe_name)
35        self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET)
36
37        # Add a breakpoint to set a watchpoint when stopped on the breakpoint.
38        lldbutil.run_break_set_by_file_and_line (self, None, self.line, num_expected_locations=1)
39
40        # Run the program.
41        self.runCmd("run", RUN_SUCCEEDED)
42
43        # We should be stopped again due to the breakpoint.
44        # The stop reason of the thread should be breakpoint.
45        self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT,
46            substrs = ['stopped',
47                       'stop reason = breakpoint'])
48
49        # Try some error conditions:
50
51        # 'watchpoint set' is now a multiword command.
52        self.expect("watchpoint set",
53            substrs = ['The following subcommands are supported:',
54                       'expression',
55                       'variable'])
56        self.runCmd("watchpoint set variable -w read_write", check=False)
57
58        # 'watchpoint set expression' with '-w' or '-x' specified now needs
59        # an option terminator and a raw expression after that.
60        self.expect("watchpoint set expression -w write --", error=True,
61            startstr = 'error: ')
62
63        # It's an error if the expression did not evaluate to an address.
64        self.expect("watchpoint set expression MyAggregateDataType", error=True,
65            startstr = 'error: expression did not evaluate to an address')
66
67        # Wrong size parameter is an error.
68        self.expect("watchpoint set variable -x -128", error=True,
69            substrs = ['invalid enumeration value'])
70
71
72if __name__ == '__main__':
73    import atexit
74    lldb.SBDebugger.Initialize()
75    atexit.register(lambda: lldb.SBDebugger.Terminate())
76    unittest2.main()
77