1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
# -*- coding: utf-8 -*-
"""Tests for CommandChainDispatcher."""
#-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
import pytest
from IPython.core.error import TryNext
from IPython.core.hooks import CommandChainDispatcher
#-----------------------------------------------------------------------------
# Local utilities
#-----------------------------------------------------------------------------
# Define two classes, one which succeeds and one which raises TryNext. Each
# sets the attribute `called` to True when it is called.
class Okay(object):
def __init__(self, message):
self.message = message
self.called = False
def __call__(self):
self.called = True
return self.message
class Fail(object):
def __init__(self, message):
self.message = message
self.called = False
def __call__(self):
self.called = True
raise TryNext(self.message)
#-----------------------------------------------------------------------------
# Test functions
#-----------------------------------------------------------------------------
def test_command_chain_dispatcher_ff():
"""Test two failing hooks"""
fail1 = Fail("fail1")
fail2 = Fail("fail2")
dp = CommandChainDispatcher([(0, fail1), (10, fail2)])
with pytest.raises(TryNext) as e:
dp()
assert str(e.value) == "fail2"
assert fail1.called is True
assert fail2.called is True
def test_command_chain_dispatcher_fofo():
"""Test a mixture of failing and succeeding hooks."""
fail1 = Fail("fail1")
fail2 = Fail("fail2")
okay1 = Okay("okay1")
okay2 = Okay("okay2")
dp = CommandChainDispatcher([(0, fail1),
# (5, okay1), # add this later
(10, fail2),
(15, okay2)])
dp.add(okay1, 5)
assert dp() == "okay1"
assert fail1.called is True
assert okay1.called is True
assert fail2.called is False
assert okay2.called is False
def test_command_chain_dispatcher_eq_priority():
okay1 = Okay(u'okay1')
okay2 = Okay(u'okay2')
dp = CommandChainDispatcher([(1, okay1)])
dp.add(okay2, 1)
|
