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
|
require 'spec_helper'
describe Immutable::List do
describe '#intersperse' do
it 'is lazy' do
-> { Immutable.stream { fail }.intersperse('') }.should_not raise_error
end
[
[[], []],
[['A'], ['A']],
[%w[A B C], ['A', '|', 'B', '|', 'C']]
].each do |values, expected|
context "on #{values.inspect}" do
let(:list) { L[*values] }
it 'preserves the original' do
list.intersperse('|')
list.should eql(L[*values])
end
it "returns #{expected.inspect}" do
list.intersperse('|').should eql(L[*expected])
end
end
end
end
end
|
