hashie/spec/hashie/extensions/indifferent_access_spec.rb

347 lines
9.3 KiB
Ruby

require 'spec_helper'
describe Hashie::Extensions::IndifferentAccess do
class IndifferentHashWithMergeInitializer < Hash
include Hashie::Extensions::MergeInitializer
include Hashie::Extensions::IndifferentAccess
class << self
alias build new
end
end
class IndifferentHashWithArrayInitializer < Hash
include Hashie::Extensions::IndifferentAccess
class << self
alias build []
end
end
class IndifferentHashWithTryConvertInitializer < Hash
include Hashie::Extensions::IndifferentAccess
class << self
alias build try_convert
end
end
class IndifferentHashWithDash < Hashie::Dash
include Hashie::Extensions::IndifferentAccess
property :foo
end
class IndifferentHashWithIgnoreUndeclaredAndPropertyTranslation < Hashie::Dash
include Hashie::Extensions::IgnoreUndeclared
include Hashie::Extensions::Dash::PropertyTranslation
include Hashie::Extensions::IndifferentAccess
property :foo, from: :bar
end
describe '#merge' do
it 'indifferently merges in a hash' do
indifferent_hash = Class.new(::Hash) do
include Hashie::Extensions::IndifferentAccess
end.new
merged_hash = indifferent_hash.merge(cat: 'meow')
expect(merged_hash[:cat]).to eq('meow')
expect(merged_hash['cat']).to eq('meow')
end
it 'injects the resulting new Hash with IndifferentAccess' do
hash = IndifferentHashWithMergeInitializer.new(
:cat => 'meow',
'dog' => { name: 'Mango', sound: 'woof' }
)
dog = hash[:dog]
merged = dog.merge(foo: 'bar')
expect(merged[:foo]).to eq('bar')
expect(merged['foo']).to eq('bar')
end
end
describe '#merge!' do
it 'indifferently merges in a hash' do
indifferent_hash = Class.new(::Hash) do
include Hashie::Extensions::IndifferentAccess
end.new
indifferent_hash[:cat] = 'meow'
expect(indifferent_hash[:cat]).to eq('meow')
expect(indifferent_hash['cat']).to eq('meow')
end
end
describe 'when included in dash' do
let(:params) { { foo: 'bar' } }
subject { IndifferentHashWithDash.new(params) }
it 'initialize with a symbol' do
expect(subject.foo).to eq params[:foo]
end
end
describe 'when overriding indifferent methods' do
let(:indifferent_hash) do
Class.new(::Hash) do
include Hashie::Extensions::IndifferentAccess
ALIASES = { cat: :grumpy }.freeze
# Override writer to maintain alias of the given key
def indifferent_writer(key, value)
indifferent_value = indifferent_value(value)
regular_writer convert_key(key), indifferent_value
regular_writer convert_key(ALIASES[key]), indifferent_value
end
alias_method :[]=, :indifferent_writer
end.new
end
it '#indifferent_writer' do
indifferent_hash[:cat] = 'meow'
expect(indifferent_hash[:cat]).to eq('meow')
expect(indifferent_hash['cat']).to eq('meow')
expect(indifferent_hash[:grumpy]).to eq('meow')
expect(indifferent_hash['grumpy']).to eq('meow')
end
it '#merge' do
merged_hash = indifferent_hash.merge(cat: 'meow')
expect(merged_hash[:cat]).to eq('meow')
expect(merged_hash['cat']).to eq('meow')
expect(merged_hash[:grumpy]).to eq('meow')
expect(merged_hash['grumpy']).to eq('meow')
end
end
describe 'when translating properties and ignoring undeclared' do
let(:value) { 'baz' }
subject { IndifferentHashWithIgnoreUndeclaredAndPropertyTranslation.new(params) }
context 'and the hash keys are strings' do
let(:params) { { 'bar' => value } }
it 'sets the property' do
expect(subject[:foo]).to eq value
end
end
context 'and the hash keys are symbols' do
let(:params) { { bar: 'baz' } }
it 'sets the property' do
expect(subject[:foo]).to eq value
end
end
context 'and there are undeclared keys' do
let(:params) { { 'bar' => 'baz', 'fail' => false } }
it 'sets the property' do
expect(subject[:foo]).to eq value
end
end
end
shared_examples_for 'hash with indifferent access' do
it 'is able to access via string or symbol' do
h = subject.build(abc: 123)
expect(h[:abc]).to eq 123
expect(h['abc']).to eq 123
end
describe '#values_at' do
it 'indifferently finds values' do
h = subject.build(:foo => 'bar', 'baz' => 'qux')
expect(h.values_at('foo', :baz)).to eq %w[bar qux]
end
it 'returns the same instance of the hash that was set' do
hash = {}
h = subject.build(foo: hash)
expect(h.values_at(:foo)[0]).to be(hash)
end
it 'returns the same instance of the array that was set' do
array = []
h = subject.build(foo: array)
expect(h.values_at(:foo)[0]).to be(array)
end
it 'returns the same instance of the string that was set' do
str = 'my string'
h = subject.build(foo: str)
expect(h.values_at(:foo)[0]).to be(str)
end
it 'returns the same instance of the object that was set' do
object = Object.new
h = subject.build(foo: object)
expect(h.values_at(:foo)[0]).to be(object)
end
end
describe '#fetch' do
it 'works like normal fetch, but indifferent' do
h = subject.build(foo: 'bar')
expect(h.fetch(:foo)).to eq h.fetch('foo')
expect(h.fetch(:foo)).to eq 'bar'
end
it 'returns the same instance of the hash that was set' do
hash = {}
h = subject.build(foo: hash)
expect(h.fetch(:foo)).to be(hash)
end
it 'returns the same instance of the array that was set' do
array = []
h = subject.build(foo: array)
expect(h.fetch(:foo)).to be(array)
end
it 'returns the same instance of the string that was set' do
str = 'my string'
h = subject.build(foo: str)
expect(h.fetch(:foo)).to be(str)
end
it 'returns the same instance of the object that was set' do
object = Object.new
h = subject.build(foo: object)
expect(h.fetch(:foo)).to be(object)
end
it 'yields with key name if key does not exists' do
h = subject.build(a: 0)
expect(h.fetch(:foo) { |key| ['default for', key] }).to eq ['default for', 'foo']
end
end
describe '#delete' do
it 'deletes indifferently' do
h = subject.build(:foo => 'bar', 'baz' => 'qux')
h.delete('foo')
h.delete(:baz)
expect(h).to be_empty
end
end
describe '#key?' do
let(:h) { subject.build(foo: 'bar') }
it 'finds it indifferently' do
expect(h).to be_key(:foo)
expect(h).to be_key('foo')
end
%w[include? member? has_key?].each do |key_alias|
it "is aliased as #{key_alias}" do
expect(h.send(key_alias.to_sym, :foo)).to be(true)
expect(h.send(key_alias.to_sym, 'foo')).to be(true)
end
end
end
describe '#update' do
let(:h) { subject.build(foo: 'bar') }
it 'allows keys to be indifferent still' do
h.update(baz: 'qux')
expect(h['foo']).to eq 'bar'
expect(h['baz']).to eq 'qux'
end
it 'recursively injects indifference into sub-hashes' do
h.update(baz: { qux: 'abc' })
expect(h['baz']['qux']).to eq 'abc'
end
it 'does not change the ancestors of the injected object class' do
h.update(baz: { qux: 'abc' })
expect({}).not_to be_respond_to(:indifferent_access?)
end
end
describe '#replace' do
let(:h) { subject.build(foo: 'bar').replace(bar: 'baz', hi: 'bye') }
it 'returns self' do
expect(h).to be_a(subject)
end
it 'removes old keys' do
[:foo, 'foo'].each do |k|
expect(h[k]).to be_nil
expect(h.key?(k)).to be_falsy
end
end
it 'creates new keys with indifferent access' do
[:bar, 'bar', :hi, 'hi'].each { |k| expect(h.key?(k)).to be_truthy }
expect(h[:bar]).to eq 'baz'
expect(h['bar']).to eq 'baz'
expect(h[:hi]).to eq 'bye'
expect(h['hi']).to eq 'bye'
end
end
describe '#try_convert' do
describe 'with conversion' do
let(:h) { subject.try_convert(foo: 'bar') }
it 'is a subject' do
expect(h).to be_a(subject)
end
end
describe 'without conversion' do
let(:h) { subject.try_convert('{ :foo => bar }') }
it 'is nil' do
expect(h).to be_nil
end
end
end
with_minimum_ruby('2.5.0') do
describe '#slice' do
let(:h) { subject.build(foo: 'bar', baz: 'qux') }
it 'indifferently slices the hash' do
sliced_h = { 'foo' => 'bar' }
expect(h.slice('foo')).to eq sliced_h
expect(h.slice(:foo)).to eq sliced_h
end
end
end
end
describe 'with merge initializer' do
subject { IndifferentHashWithMergeInitializer }
it_should_behave_like 'hash with indifferent access'
end
describe 'with array initializer' do
subject { IndifferentHashWithArrayInitializer }
it_should_behave_like 'hash with indifferent access'
end
describe 'with try convert initializer' do
subject { IndifferentHashWithTryConvertInitializer }
it_should_behave_like 'hash with indifferent access'
end
end