Coverage for idle_test/test_warning.py: 96%

1'''Test warnings replacement in pyshell.py and run.py. 

2 

3This file could be expanded to include traceback overrides 

4(in same two modules). If so, change name. 

5Revise if output destination changes (http://bugs.python.org/issue18318). 

6Make sure warnings module is left unaltered (http://bugs.python.org/issue18081). 

7''' 

8from idlelib import run (empty)

9from idlelib import pyshell as shell (empty)

10import unittest (empty)

11from test.support import captured_stderr (empty)

12import warnings (empty)

13 

14# Try to capture default showwarning before Idle modules are imported. 

15showwarning = warnings.showwarning (empty)

16# But if we run this file within idle, we are in the middle of the run.main loop 

17# and default showwarnings has already been replaced. 

18running_in_idle = 'idle' in showwarning.__name__ (empty)

19 

20# The following was generated from pyshell.idle_formatwarning 

21# and checked as matching expectation. 

22idlemsg = ''' (empty)

23Warning (from warnings module): 

24 File "test_warning.py", line 99 

25 Line of code 

26UserWarning: Test 

27''' 

28shellmsg = idlemsg + ">>> " (empty)

29 

30 

31class RunWarnTest(unittest.TestCase): (empty)

32 

33 @unittest.skipIf(running_in_idle, "Does not work when run within Idle.") (empty)

34 def test_showwarnings(self): (empty)

35 self.assertIs(warnings.showwarning, showwarning) 1 ctx1b

36 run.capture_warnings(True) 1 ctx1b

37 self.assertIs(warnings.showwarning, run.idle_showwarning_subproc) 1 ctx1b

38 run.capture_warnings(False) 1 ctx1b

39 self.assertIs(warnings.showwarning, showwarning) 1 ctx1b

40 

41 def test_run_show(self): (empty)

42 with captured_stderr() as f: 1 ctx1d

43 run.idle_showwarning_subproc( 1 ctx1d

44 'Test', UserWarning, 'test_warning.py', 99, f, 'Line of code') 

45 # The following uses .splitlines to erase line-ending differences 

46 self.assertEqual(idlemsg.splitlines(), f.getvalue().splitlines()) 1 ctx1d

47 

48 

49class ShellWarnTest(unittest.TestCase): (empty)

50 

51 @unittest.skipIf(running_in_idle, "Does not work when run within Idle.") (empty)

52 def test_showwarnings(self): (empty)

53 self.assertIs(warnings.showwarning, showwarning) 1 ctx1c

54 shell.capture_warnings(True) 1 ctx1c

55 self.assertIs(warnings.showwarning, shell.idle_showwarning) 1 ctx1c

56 shell.capture_warnings(False) 1 ctx1c

57 self.assertIs(warnings.showwarning, showwarning) 1 ctx1c

58 

59 def test_idle_formatter(self): (empty)

60 # Will fail if format changed without regenerating idlemsg 

61 s = shell.idle_formatwarning( 1 ctx1f

62 'Test', UserWarning, 'test_warning.py', 99, 'Line of code') 

63 self.assertEqual(idlemsg, s) 1 ctx1f

64 

65 def test_shell_show(self): (empty)

66 with captured_stderr() as f: 1 ctx1e

67 shell.idle_showwarning( 1 ctx1e

68 'Test', UserWarning, 'test_warning.py', 99, f, 'Line of code') 

69 self.assertEqual(shellmsg.splitlines(), f.getvalue().splitlines()) 1 ctx1e

70 

71 

72if __name__ == '__main__': 72 ↛ 73line 72 didn't jump to line 73, because the condition on line 72 was never true(empty)

73 unittest.main(verbosity=2)