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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
# frozen_string_literal: true
require 'spec_helper'
RSpec.describe 'Enumerator#next patch fix', feature_category: :shared do
describe 'Enumerator' do
RSpec::Matchers.define :contain_unique_method_calls_in_order do |expected|
attr_reader :actual
match do |actual|
@actual_err = actual
@actual = actual.backtrace.filter_map do |line|
match = source_regexp.match(line)
match[1] if match
end
expected == @actual
end
diffable
failure_message do
"#{super()}\n\nFull error backtrace:\n #{@actual_err.backtrace.join("\n ")}"
end
private
def source_regexp
@source_regexp ||= Regexp.new("/spec/initializers/enumerator_next_patch_spec\\.rb:[0-9]+:in `([a-zA-Z_]*)'$")
end
end
def have_been_raised_by_next_and_not_fixed_up
contain_unique_method_calls_in_order %w[call_enum_method]
end
def have_been_raised_by_enum_object_and_fixed_up
contain_unique_method_calls_in_order %w[make_error call_enum_method]
end
def have_been_raised_by_enum_object_and_not_fixed_up
contain_unique_method_calls_in_order %w[make_error]
end
def have_been_raised_by_nested_next_and_fixed_up
contain_unique_method_calls_in_order %w[call_nested_next call_enum_method]
end
methods = [
{
name: 'next',
expected_value: 'Test value'
},
{
name: 'next_values',
expected_value: ['Test value']
},
{
name: 'peek',
expected_value: 'Test value'
},
{
name: 'peek_values',
expected_value: ['Test value']
}
]
methods.each do |method|
describe "##{method[:name]}" do
def call_enum_method
enumerator.send(method_name)
end
let(:method_name) { method[:name] }
subject { call_enum_method }
describe 'normal yield' do
let(:enumerator) { Enumerator.new { |yielder| yielder << 'Test value' } }
it 'returns yielded value' do
is_expected.to eq(method[:expected_value])
end
end
describe 'end of iteration' do
let(:enumerator) { Enumerator.new { |_| } }
it 'does not fix up StopIteration' do
expect { subject }.to raise_error do |err|
expect(err).to be_a(StopIteration)
expect(err).to have_been_raised_by_next_and_not_fixed_up
end
end
end
describe 'arguments error' do
def call_enum_method
enumerator.send(method_name, 'extra argument')
end
let(:enumerator) { Enumerator.new { |_| } }
it 'does not fix up ArgumentError' do
expect { subject }.to raise_error do |err|
expect(err).to be_a(ArgumentError)
expect(err).to have_been_raised_by_next_and_not_fixed_up
end
end
end
describe 'error' do
let(:enumerator) { Enumerator.new { |_| raise error } }
let(:error) { make_error }
it 'does not fix up StopIteration' do
def make_error
StopIteration.new.tap { |err| err.set_backtrace(caller) }
end
expect { subject }.to raise_error do |err|
expect(err).to be(error)
expect(err).to have_been_raised_by_enum_object_and_not_fixed_up
end
end
it 'fixes up ArgumentError' do
def make_error
ArgumentError.new.tap { |err| err.set_backtrace(caller) }
end
expect { subject }.to raise_error do |err|
expect(err).to be(error)
expect(err).to have_been_raised_by_enum_object_and_fixed_up
end
end
it 'adds backtrace from other errors' do
def make_error
StandardError.new('This is a test').tap { |err| err.set_backtrace(caller) }
end
expect { subject }.to raise_error do |err|
expect(err).to be(error)
expect(err).to have_been_raised_by_enum_object_and_fixed_up
expect(err.message).to eq('This is a test')
end
end
end
end
end
end
end
|
