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require 'abstract_unit'
class OrderedHashTest < Test::Unit::TestCase
def setup
@keys = %w( blue green red pink orange )
@values = %w( 000099 009900 aa0000 cc0066 cc6633 )
@hash = Hash.new
@ordered_hash = ActiveSupport::OrderedHash.new
@keys.each_with_index do |key, index|
@hash[key] = @values[index]
@ordered_hash[key] = @values[index]
end
end
def test_order
assert_equal @keys, @ordered_hash.keys
assert_equal @values, @ordered_hash.values
end
def test_access
assert @hash.all? { |k, v| @ordered_hash[k] == v }
end
def test_assignment
key, value = 'purple', '5422a8'
@ordered_hash[key] = value
assert_equal @keys.length + 1, @ordered_hash.length
assert_equal key, @ordered_hash.keys.last
assert_equal value, @ordered_hash.values.last
assert_equal value, @ordered_hash[key]
end
def test_delete
key, value = 'white', 'ffffff'
bad_key = 'black'
@ordered_hash[key] = value
assert_equal @keys.length + 1, @ordered_hash.length
assert_equal @ordered_hash.keys.length, @ordered_hash.length
assert_equal value, @ordered_hash.delete(key)
assert_equal @keys.length, @ordered_hash.length
assert_equal @ordered_hash.keys.length, @ordered_hash.length
assert_nil @ordered_hash.delete(bad_key)
end
def test_to_hash
assert_same @ordered_hash, @ordered_hash.to_hash
end
def test_to_a
assert_equal @keys.zip(@values), @ordered_hash.to_a
end
def test_has_key
assert_equal true, @ordered_hash.has_key?('blue')
assert_equal true, @ordered_hash.key?('blue')
assert_equal true, @ordered_hash.include?('blue')
assert_equal true, @ordered_hash.member?('blue')
assert_equal false, @ordered_hash.has_key?('indigo')
assert_equal false, @ordered_hash.key?('indigo')
assert_equal false, @ordered_hash.include?('indigo')
assert_equal false, @ordered_hash.member?('indigo')
end
def test_has_value
assert_equal true, @ordered_hash.has_value?('000099')
assert_equal true, @ordered_hash.value?('000099')
assert_equal false, @ordered_hash.has_value?('ABCABC')
assert_equal false, @ordered_hash.value?('ABCABC')
end
def test_each_key
keys = []
@ordered_hash.each_key { |k| keys << k }
assert_equal @keys, keys
end
def test_each_value
values = []
@ordered_hash.each_value { |v| values << v }
assert_equal @values, values
end
def test_each
values = []
@ordered_hash.each {|key, value| values << value}
assert_equal @values, values
end
def test_each_with_index
@ordered_hash.each_with_index { |pair, index| assert_equal [@keys[index], @values[index]], pair}
end
def test_each_pair
values = []
keys = []
@ordered_hash.each_pair do |key, value|
keys << key
values << value
end
assert_equal @values, values
assert_equal @keys, keys
end
def test_delete_if
copy = @ordered_hash.dup
copy.delete('pink')
assert_equal copy, @ordered_hash.delete_if { |k, _| k == 'pink' }
assert !@ordered_hash.keys.include?('pink')
end
def test_reject!
(copy = @ordered_hash.dup).delete('pink')
@ordered_hash.reject! { |k, _| k == 'pink' }
assert_equal copy, @ordered_hash
assert !@ordered_hash.keys.include?('pink')
end
def test_reject
copy = @ordered_hash.dup
new_ordered_hash = @ordered_hash.reject { |k, _| k == 'pink' }
assert_equal copy, @ordered_hash
assert !new_ordered_hash.keys.include?('pink')
assert @ordered_hash.keys.include?('pink')
end
def test_clear
@ordered_hash.clear
assert_equal [], @ordered_hash.keys
end
def test_merge
other_hash = ActiveSupport::OrderedHash.new
other_hash['purple'] = '800080'
other_hash['violet'] = 'ee82ee'
merged = @ordered_hash.merge other_hash
assert_equal merged.length, @ordered_hash.length + other_hash.length
assert_equal @keys + ['purple', 'violet'], merged.keys
another_hash = ActiveSupport::OrderedHash.new
another_hash['white'] = 'ff'
another_hash['black'] = '00'
merged_with_block = @ordered_hash.merge(another_hash) do |key, old_value, new_value|
new_value * 3
end
assert_equal 'ffffff', merged_with_block['white']
assert_equal '000000', merged_with_block['black']
@ordered_hash.merge! other_hash
assert_equal @ordered_hash, merged
assert_equal @ordered_hash.keys, merged.keys
@ordered_hash.merge! another_hash
assert_equal 'ffffff', merged_with_block['white']
assert_equal '000000', merged_with_block['black']
end
def test_shift
pair = @ordered_hash.shift
assert_equal [@keys.first, @values.first], pair
assert !@ordered_hash.keys.include?(pair.first)
end
def test_keys
original = @ordered_hash.keys.dup
@ordered_hash.keys.pop
assert_equal original, @ordered_hash.keys
end
def test_inspect
assert @ordered_hash.inspect.include?(@hash.inspect)
end
def test_alternate_initialization_with_splat
alternate = ActiveSupport::OrderedHash[1,2,3,4]
assert_kind_of ActiveSupport::OrderedHash, alternate
assert_equal [1, 3], alternate.keys
end
def test_alternate_initialization_with_array
alternate = ActiveSupport::OrderedHash[ [
[1, 2],
[3, 4],
"bad key value pair",
[ 'missing value' ]
]]
assert_kind_of ActiveSupport::OrderedHash, alternate
assert_equal [1, 3, 'missing value'], alternate.keys
assert_equal [2, 4, nil ], alternate.values
end
def test_alternate_initialization_raises_exception_on_odd_length_args
begin
alternate = ActiveSupport::OrderedHash[1,2,3,4,5]
flunk "Hash::[] should have raised an exception on initialization " +
"with an odd number of parameters"
rescue
assert_equal "odd number of arguments for Hash", $!.message
end
end
def test_replace_updates_keys
@other_ordered_hash = ActiveSupport::OrderedHash[:black, '000000', :white, '000000']
original = @ordered_hash.replace(@other_ordered_hash)
assert_same original, @ordered_hash
assert_equal @other_ordered_hash.keys, @ordered_hash.keys
end
def test_each_after_yaml_serialization
values = []
@deserialized_ordered_hash = YAML::load(YAML::dump(@ordered_hash))
@deserialized_ordered_hash.each {|key, value| values << value}
assert_equal @values, values
end
def test_order_after_yaml_serialization
@deserialized_ordered_hash = YAML::load(YAML::dump(@ordered_hash))
assert_equal @keys, @deserialized_ordered_hash.keys
assert_equal @values, @deserialized_ordered_hash.values
end
def test_order_after_yaml_serialization_with_nested_arrays
@ordered_hash[:array] = %w(a b c)
@deserialized_ordered_hash = YAML::load(YAML::dump(@ordered_hash))
assert_equal @ordered_hash.keys, @deserialized_ordered_hash.keys
assert_equal @ordered_hash.values, @deserialized_ordered_hash.values
end
end
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