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
|
require 'spec_helper'
describe Immutable::Hash do
describe '#values_at' do
context 'on Hash without default proc' do
let(:hash) { H[:a => 9, :b => 'a', :c => -10, :d => nil] }
it 'returns an empty vector when no keys are given' do
hash.values_at.should be_kind_of(Immutable::Vector)
hash.values_at.should eql(V.empty)
end
it 'returns a vector of values for the given keys' do
hash.values_at(:a, :d, :b).should be_kind_of(Immutable::Vector)
hash.values_at(:a, :d, :b).should eql(V[9, nil, 'a'])
end
it 'fills nil when keys are missing' do
hash.values_at(:x, :a, :y, :b).should be_kind_of(Immutable::Vector)
hash.values_at(:x, :a, :y, :b).should eql(V[nil, 9, nil, 'a'])
end
end
context 'on Hash with default proc' do
let(:hash) { Immutable::Hash.new(:a => 9) { |key| "#{key}-VAL" } }
it 'fills the result of the default proc when keys are missing' do
hash.values_at(:x, :a, :y).should be_kind_of(Immutable::Vector)
hash.values_at(:x, :a, :y).should eql(V['x-VAL', 9, 'y-VAL'])
end
end
end
end
|
