diff options
Diffstat (limited to 'packages/Python/lldbsuite/test/source-manager/TestSourceManager.py')
| -rw-r--r-- | packages/Python/lldbsuite/test/source-manager/TestSourceManager.py | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py b/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py new file mode 100644 index 0000000..b4e7541 --- /dev/null +++ b/packages/Python/lldbsuite/test/source-manager/TestSourceManager.py @@ -0,0 +1,172 @@ +""" +Test lldb core component: SourceManager. + +Test cases: + +o test_display_source_python: + Test display of source using the SBSourceManager API. +o test_modify_source_file_while_debugging: + Test the caching mechanism of the source manager. +""" + +from __future__ import print_function + + + +import lldb +from lldbsuite.test.lldbtest import * +import lldbsuite.test.lldbutil as lldbutil + +class SourceManagerTestCase(TestBase): + + mydir = TestBase.compute_mydir(__file__) + + def setUp(self): + # Call super's setUp(). + TestBase.setUp(self) + # Find the line number to break inside main(). + self.line = line_number('main.c', '// Set break point at this line.') + + @add_test_categories(['pyapi']) + def test_display_source_python(self): + """Test display of source using the SBSourceManager API.""" + self.build() + exe = os.path.join(os.getcwd(), "a.out") + self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) + + target = self.dbg.CreateTarget(exe) + self.assertTrue(target, VALID_TARGET) + + # Launch the process, and do not stop at the entry point. + process = target.LaunchSimple (None, None, self.get_process_working_directory()) + + # + # Exercise Python APIs to display source lines. + # + + # Create the filespec for 'main.c'. + filespec = lldb.SBFileSpec('main.c', False) + source_mgr = self.dbg.GetSourceManager() + # Use a string stream as the destination. + stream = lldb.SBStream() + source_mgr.DisplaySourceLinesWithLineNumbers(filespec, + self.line, + 2, # context before + 2, # context after + "=>", # prefix for current line + stream) + + # 2 + # 3 int main(int argc, char const *argv[]) { + # => 4 printf("Hello world.\n"); // Set break point at this line. + # 5 return 0; + # 6 } + self.expect(stream.GetData(), "Source code displayed correctly", + exe=False, + patterns = ['=> %d.*Hello world' % self.line]) + + # Boundary condition testings for SBStream(). LLDB should not crash! + stream.Print(None) + stream.RedirectToFile(None, True) + + def test_move_and_then_display_source(self): + """Test that target.source-map settings work by moving main.c to hidden/main.c.""" + self.build() + exe = os.path.join(os.getcwd(), "a.out") + self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) + + # Move main.c to hidden/main.c. + main_c = "main.c" + main_c_hidden = os.path.join("hidden", main_c) + os.rename(main_c, main_c_hidden) + + if self.TraceOn(): + system([["ls"]]) + system([["ls", "hidden"]]) + + # Restore main.c after the test. + self.addTearDownHook(lambda: os.rename(main_c_hidden, main_c)) + + # Set target.source-map settings. + self.runCmd("settings set target.source-map %s %s" % (os.getcwd(), os.path.join(os.getcwd(), "hidden"))) + # And verify that the settings work. + self.expect("settings show target.source-map", + substrs = [os.getcwd(), os.path.join(os.getcwd(), "hidden")]) + + # Display main() and verify that the source mapping has been kicked in. + self.expect("source list -n main", SOURCE_DISPLAYED_CORRECTLY, + substrs = ['Hello world']) + + def test_modify_source_file_while_debugging(self): + """Modify a source file while debugging the executable.""" + self.build() + exe = os.path.join(os.getcwd(), "a.out") + self.runCmd("file " + exe, CURRENT_EXECUTABLE_SET) + + lldbutil.run_break_set_by_file_and_line (self, "main.c", self.line, num_expected_locations=1, loc_exact=True) + + self.runCmd("run", RUN_SUCCEEDED) + + # The stop reason of the thread should be breakpoint. + self.expect("thread list", STOPPED_DUE_TO_BREAKPOINT, + substrs = ['stopped', + 'main.c:%d' % self.line, + 'stop reason = breakpoint']) + + # Display some source code. + self.expect("source list -f main.c -l %d" % self.line, SOURCE_DISPLAYED_CORRECTLY, + substrs = ['Hello world']) + + # The '-b' option shows the line table locations from the debug information + # that indicates valid places to set source level breakpoints. + + # The file to display is implicit in this case. + self.runCmd("source list -l %d -c 3 -b" % self.line) + output = self.res.GetOutput().splitlines()[0] + + # If the breakpoint set command succeeded, we should expect a positive number + # of breakpoints for the current line, i.e., self.line. + import re + m = re.search('^\[(\d+)\].*// Set break point at this line.', output) + if not m: + self.fail("Fail to display source level breakpoints") + self.assertTrue(int(m.group(1)) > 0) + + # Read the main.c file content. + with open('main.c', 'r') as f: + original_content = f.read() + if self.TraceOn(): + print("original content:", original_content) + + # Modify the in-memory copy of the original source code. + new_content = original_content.replace('Hello world', 'Hello lldb', 1) + + # This is the function to restore the original content. + def restore_file(): + #print("os.path.getmtime() before restore:", os.path.getmtime('main.c')) + time.sleep(1) + with open('main.c', 'wb') as f: + f.write(original_content) + if self.TraceOn(): + with open('main.c', 'r') as f: + print("content restored to:", f.read()) + # Touch the file just to be sure. + os.utime('main.c', None) + if self.TraceOn(): + print("os.path.getmtime() after restore:", os.path.getmtime('main.c')) + + + + # Modify the source code file. + with open('main.c', 'wb') as f: + time.sleep(1) + f.write(new_content) + if self.TraceOn(): + print("new content:", new_content) + print("os.path.getmtime() after writing new content:", os.path.getmtime('main.c')) + # Add teardown hook to restore the file to the original content. + self.addTearDownHook(restore_file) + + # Display the source code again. We should see the updated line. + self.expect("source list -f main.c -l %d" % self.line, SOURCE_DISPLAYED_CORRECTLY, + substrs = ['Hello lldb']) |
