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
|
# frozen_string_literal: true
RSpec.describe Morpher::Transform::Block do
subject { described_class.new(name: name, block: block) }
let(:block) { ->(value) { right(value * 2) } }
let(:name) { :external }
describe '#call' do
def apply
subject.call(input)
end
let(:input) { 3 }
context 'when block suceeds' do
it 'returns success' do
expect(apply).to eql(right(6))
end
end
context 'when block fails' do
let(:block) { ->(_value) { left('some error') } }
it 'returns expected error' do
expect(apply).to eql(
left(
Morpher::Transform::Error.new(
cause: nil,
input: input,
message: 'some error',
transform: subject
)
)
)
end
end
end
describe '#slug' do
def apply
subject.slug
end
it 'returns name' do
expect(apply).to be(name)
end
end
describe '.capture' do
def apply
described_class.capture(name, &block)
end
it 'returns expected transform' do
expect(apply).to eql(described_class.new(name: name, block: block))
end
end
end
|
