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require 'spec_helper'
describe Hashie::Extensions::DeepFind do
subject { Class.new(Hash) { include Hashie::Extensions::DeepFind } }
let(:hash) do
{
library: {
books: [
{ title: 'Call of the Wild' },
{ title: 'Moby Dick' }
],
shelves: nil,
location: {
address: '123 Library St.',
title: 'Main Library'
}
}
}
end
let(:instance) { subject.new.update(hash) }
describe '#deep_find' do
it 'detects a value from a nested hash' do
expect(instance.deep_find(:address)).to eq('123 Library St.')
end
it 'detects a value from a nested array' do
expect(instance.deep_find(:title)).to eq('Call of the Wild')
end
it 'returns nil if it does not find a match' do
expect(instance.deep_find(:wahoo)).to be_nil
end
end
describe '#deep_find_all' do
it 'detects all values from a nested hash' do
expect(instance.deep_find_all(:title))
.to eq(['Call of the Wild', 'Moby Dick', 'Main Library'])
end
it 'returns nil if it does not find any matches' do
expect(instance.deep_find_all(:wahoo)).to be_nil
end
context 'when match value is hash itself' do
let(:hash) do
{
title: {
type: :string
},
library: {
books: [
{ title: 'Call of the Wild' },
{ title: 'Moby Dick' }
],
shelves: nil,
location: {
address: '123 Library St.',
title: 'Main Library'
}
}
}
end
it 'detects all values from a nested hash' do
expect(instance.deep_find_all(:title))
.to eq([{ type: :string }, 'Call of the Wild', 'Moby Dick', 'Main Library'])
end
end
end
context 'on a Hash including Hashie::Extensions::IndifferentAccess' do
let(:klass) { Class.new(Hash) { include Hashie::Extensions::IndifferentAccess } }
subject(:instance) { klass[hash.dup].extend(Hashie::Extensions::DeepFind) }
describe '#deep_find' do
it 'indifferently detects a value from a nested hash' do
expect(instance.deep_find(:address)).to eq('123 Library St.')
expect(instance.deep_find('address')).to eq('123 Library St.')
end
it 'indifferently detects a value from a nested array' do
expect(instance.deep_find(:title)).to eq('Call of the Wild')
expect(instance.deep_find('title')).to eq('Call of the Wild')
end
it 'indifferently returns nil if it does not find a match' do
expect(instance.deep_find(:wahoo)).to be_nil
expect(instance.deep_find('wahoo')).to be_nil
end
end
describe '#deep_find_all' do
it 'indifferently detects all values from a nested hash' do
expect(instance.deep_find_all(:title))
.to eq(['Call of the Wild', 'Moby Dick', 'Main Library'])
expect(instance.deep_find_all('title'))
.to eq(['Call of the Wild', 'Moby Dick', 'Main Library'])
end
it 'indifferently returns nil if it does not find any matches' do
expect(instance.deep_find_all(:wahoo)).to be_nil
expect(instance.deep_find_all('wahoo')).to be_nil
end
end
end
end
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