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require 'spec_helper'
require 'extlib/mash'
class AwesomeHash < Hash
end
describe Mash do
before(:each) do
@hash = { "mash" => "indifferent", :hash => "different" }
@sub = AwesomeHash.new("mash" => "indifferent", :hash => "different")
end
describe "#initialize" do
it 'converts all keys into strings when param is a Hash' do
mash = Mash.new(@hash)
mash.keys.any? { |key| key.is_a?(Symbol) }.should be(false)
end
it 'converts all pure Hash values into Mashes if param is a Hash' do
mash = Mash.new :hash => @hash
mash["hash"].should be_an_instance_of(Mash)
# sanity check
mash["hash"]["hash"].should == "different"
end
it 'doesn not convert Hash subclass values into Mashes' do
mash = Mash.new :sub => @sub
mash["sub"].should be_an_instance_of(AwesomeHash)
end
it 'converts all value items if value is an Array' do
mash = Mash.new :arry => { :hash => [@hash] }
mash["arry"].should be_an_instance_of(Mash)
# sanity check
mash["arry"]["hash"].first["hash"].should == "different"
end
it 'delegates to superclass constructor if param is not a Hash' do
mash = Mash.new("dash berlin")
mash["unexisting key"].should == "dash berlin"
end
end # describe "#initialize"
describe "#update" do
it 'converts all keys into strings when param is a Hash' do
mash = Mash.new(@hash)
mash.update("starry" => "night")
mash.keys.any? { |key| key.is_a?(Symbol) }.should be(false)
end
it 'converts all Hash values into Mashes if param is a Hash' do
mash = Mash.new :hash => @hash
mash.update(:hash => { :hash => "is buggy in Ruby 1.8.6" })
mash["hash"].should be_an_instance_of(Mash)
end
end # describe "#update"
describe "#[]=" do
it 'converts key into string' do
mash = Mash.new(@hash)
mash[:hash] = { "starry" => "night" }
mash.keys.any? { |key| key.is_a?(Symbol) }.should be(false)
end
it 'converts all Hash value into Mash' do
mash = Mash.new :hash => @hash
mash[:hash] = { :hash => "is buggy in Ruby 1.8.6" }
mash["hash"].should be_an_instance_of(Mash)
end
end # describe "#[]="
describe "#key?" do
before(:each) do
@mash = Mash.new(@hash)
end
it 'converts key before lookup' do
@mash.key?("mash").should be(true)
@mash.key?(:mash).should be(true)
@mash.key?("hash").should be(true)
@mash.key?(:hash).should be(true)
@mash.key?(:rainclouds).should be(false)
@mash.key?("rainclouds").should be(false)
end
it 'is aliased as include?' do
@mash.include?("mash").should be(true)
@mash.include?(:mash).should be(true)
@mash.include?("hash").should be(true)
@mash.include?(:hash).should be(true)
@mash.include?(:rainclouds).should be(false)
@mash.include?("rainclouds").should be(false)
end
it 'is aliased as member?' do
@mash.member?("mash").should be(true)
@mash.member?(:mash).should be(true)
@mash.member?("hash").should be(true)
@mash.member?(:hash).should be(true)
@mash.member?(:rainclouds).should be(false)
@mash.member?("rainclouds").should be(false)
end
end # describe "#key?"
describe "#dup" do
it 'returns instance of Mash' do
Mash.new(@hash).dup.should be_an_instance_of(Mash)
end
it 'preserves keys' do
mash = Mash.new(@hash)
dup = mash.dup
mash.keys.sort.should == dup.keys.sort
end
it 'preserves value' do
mash = Mash.new(@hash)
dup = mash.dup
mash.values.sort.should == dup.values.sort
end
end
describe "#to_hash" do
it 'returns instance of Mash' do
Mash.new(@hash).to_hash.should be_an_instance_of(Hash)
end
it 'preserves keys' do
mash = Mash.new(@hash)
converted = mash.to_hash
mash.keys.sort.should == converted.keys.sort
end
it 'preserves value' do
mash = Mash.new(@hash)
converted = mash.to_hash
mash.values.sort.should == converted.values.sort
end
end
describe "#symbolize_keys" do
it 'returns instance of Mash' do
Mash.new(@hash).symbolize_keys.should be_an_instance_of(Hash)
end
it 'converts keys to symbols' do
mash = Mash.new(@hash)
converted = mash.symbolize_keys
converted_keys = converted.keys.sort{|k1, k2| k1.to_s <=> k2.to_s}
orig_keys = mash.keys.map{|k| k.to_sym}.sort{|i1, i2| i1.to_s <=> i2.to_s}
converted_keys.should == orig_keys
end
it 'preserves value' do
mash = Mash.new(@hash)
converted = mash.symbolize_keys
mash.values.sort.should == converted.values.sort
end
end
describe "#delete" do
it 'converts Symbol key into String before deleting' do
mash = Mash.new(@hash)
mash.delete(:hash)
mash.key?("hash").should be(false)
end
it 'works with String keys as well' do
mash = Mash.new(@hash)
mash.delete("mash")
mash.key?("mash").should be(false)
end
end
describe "#except" do
it "converts Symbol key into String before calling super" do
mash = Mash.new(@hash)
hashless_mash = mash.except(:hash)
hashless_mash.key?("hash").should be(false)
end
it "works with String keys as well" do
mash = Mash.new(@hash)
mashless_mash = mash.except("mash")
mashless_mash.key?("mash").should be(false)
end
it "works with multiple keys" do
mash = Mash.new(@hash)
mashless = mash.except("hash", :mash)
mashless.key?(:hash).should be(false)
mashless.key?("mash").should be(false)
end
it "should return a mash" do
mash = Mash.new(@hash)
hashless_mash = mash.except(:hash)
hashless_mash.class.should be(Mash)
end
end
describe "#merge" do
before(:each) do
@mash = Mash.new(@hash).merge(:no => "in between")
end
it 'returns instance of Mash' do
@mash.should be_an_instance_of(Mash)
end
it 'merges in give Hash' do
@mash["no"].should == "in between"
end
end
describe "#fetch" do
before(:each) do
@mash = Mash.new(@hash).merge(:no => "in between")
end
it 'converts key before fetching' do
@mash.fetch("no").should == "in between"
end
it 'returns alternative value if key lookup fails' do
@mash.fetch("flying", "screwdriver").should == "screwdriver"
end
end
describe "#default" do
before(:each) do
@mash = Mash.new(:yet_another_technical_revolution)
end
it 'returns default value unless key exists in mash' do
@mash.default("peak oil is now behind, baby").should == :yet_another_technical_revolution
end
it 'returns existing value if key is Symbol and exists in mash' do
@mash.update(:no => "in between")
@mash.default(:no).should == "in between"
end
end
describe "#values_at" do
before(:each) do
@mash = Mash.new(@hash).merge(:no => "in between")
end
it 'is indifferent to whether keys are strings or symbols' do
@mash.values_at("hash", :mash, :no).should == ["different", "indifferent", "in between"]
end
end
describe "#stringify_keys!" do
it 'returns the mash itself' do
mash = Mash.new(@hash)
mash.stringify_keys!.object_id.should == mash.object_id
end
end
end
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