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rails--rails/activesupport/test/hash_with_indifferent_access_test.rb

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# frozen_string_literal: true
require "abstract_unit"
require "active_support/core_ext/hash"
require "bigdecimal"
require "active_support/core_ext/string/access"
require "active_support/ordered_hash"
require "active_support/core_ext/object/conversions"
require "active_support/core_ext/object/deep_dup"
require "active_support/inflections"
class HashWithIndifferentAccessTest < ActiveSupport::TestCase
HashWithIndifferentAccess = ActiveSupport::HashWithIndifferentAccess
class IndifferentHash < ActiveSupport::HashWithIndifferentAccess
end
class SubclassingArray < Array
end
class SubclassingHash < Hash
end
class NonIndifferentHash < Hash
def nested_under_indifferent_access
self
end
end
class HashByConversion
def initialize(hash)
@hash = hash
end
def to_hash
@hash
end
end
def setup
@strings = { "a" => 1, "b" => 2 }
@nested_strings = { "a" => { "b" => { "c" => 3 } } }
@symbols = { a: 1, b: 2 }
@nested_symbols = { a: { b: { c: 3 } } }
@mixed = { :a => 1, "b" => 2 }
@nested_mixed = { "a" => { b: { "c" => 3 } } }
@integers = { 0 => 1, 1 => 2 }
@nested_integers = { 0 => { 1 => { 2 => 3 } } }
@illegal_symbols = { [] => 3 }
@nested_illegal_symbols = { [] => { [] => 3 } }
end
def test_symbolize_keys_for_hash_with_indifferent_access
assert_instance_of Hash, @symbols.with_indifferent_access.symbolize_keys
assert_equal @symbols, @symbols.with_indifferent_access.symbolize_keys
assert_equal @symbols, @strings.with_indifferent_access.symbolize_keys
assert_equal @symbols, @mixed.with_indifferent_access.symbolize_keys
end
def test_to_options_for_hash_with_indifferent_access
assert_instance_of Hash, @symbols.with_indifferent_access.to_options
assert_equal @symbols, @symbols.with_indifferent_access.to_options
assert_equal @symbols, @strings.with_indifferent_access.to_options
assert_equal @symbols, @mixed.with_indifferent_access.to_options
end
def test_deep_symbolize_keys_for_hash_with_indifferent_access
assert_instance_of Hash, @nested_symbols.with_indifferent_access.deep_symbolize_keys
assert_equal @nested_symbols, @nested_symbols.with_indifferent_access.deep_symbolize_keys
assert_equal @nested_symbols, @nested_strings.with_indifferent_access.deep_symbolize_keys
assert_equal @nested_symbols, @nested_mixed.with_indifferent_access.deep_symbolize_keys
end
def test_symbolize_keys_bang_for_hash_with_indifferent_access
assert_raise(NoMethodError) { @symbols.with_indifferent_access.dup.symbolize_keys! }
assert_raise(NoMethodError) { @strings.with_indifferent_access.dup.symbolize_keys! }
assert_raise(NoMethodError) { @mixed.with_indifferent_access.dup.symbolize_keys! }
end
def test_deep_symbolize_keys_bang_for_hash_with_indifferent_access
assert_raise(NoMethodError) { @nested_symbols.with_indifferent_access.deep_dup.deep_symbolize_keys! }
assert_raise(NoMethodError) { @nested_strings.with_indifferent_access.deep_dup.deep_symbolize_keys! }
assert_raise(NoMethodError) { @nested_mixed.with_indifferent_access.deep_dup.deep_symbolize_keys! }
end
def test_symbolize_keys_preserves_keys_that_cant_be_symbolized_for_hash_with_indifferent_access
assert_equal @illegal_symbols, @illegal_symbols.with_indifferent_access.symbolize_keys
assert_raise(NoMethodError) { @illegal_symbols.with_indifferent_access.dup.symbolize_keys! }
end
def test_deep_symbolize_keys_preserves_keys_that_cant_be_symbolized_for_hash_with_indifferent_access
assert_equal @nested_illegal_symbols, @nested_illegal_symbols.with_indifferent_access.deep_symbolize_keys
assert_raise(NoMethodError) { @nested_illegal_symbols.with_indifferent_access.deep_dup.deep_symbolize_keys! }
end
def test_symbolize_keys_preserves_integer_keys_for_hash_with_indifferent_access
assert_equal @integers, @integers.with_indifferent_access.symbolize_keys
assert_raise(NoMethodError) { @integers.with_indifferent_access.dup.symbolize_keys! }
end
def test_deep_symbolize_keys_preserves_integer_keys_for_hash_with_indifferent_access
assert_equal @nested_integers, @nested_integers.with_indifferent_access.deep_symbolize_keys
assert_raise(NoMethodError) { @nested_integers.with_indifferent_access.deep_dup.deep_symbolize_keys! }
end
def test_stringify_keys_for_hash_with_indifferent_access
assert_instance_of ActiveSupport::HashWithIndifferentAccess, @symbols.with_indifferent_access.stringify_keys
assert_equal @strings, @symbols.with_indifferent_access.stringify_keys
assert_equal @strings, @strings.with_indifferent_access.stringify_keys
assert_equal @strings, @mixed.with_indifferent_access.stringify_keys
end
def test_deep_stringify_keys_for_hash_with_indifferent_access
assert_instance_of ActiveSupport::HashWithIndifferentAccess, @nested_symbols.with_indifferent_access.deep_stringify_keys
assert_equal @nested_strings, @nested_symbols.with_indifferent_access.deep_stringify_keys
assert_equal @nested_strings, @nested_strings.with_indifferent_access.deep_stringify_keys
assert_equal @nested_strings, @nested_mixed.with_indifferent_access.deep_stringify_keys
end
def test_stringify_keys_bang_for_hash_with_indifferent_access
assert_instance_of ActiveSupport::HashWithIndifferentAccess, @symbols.with_indifferent_access.dup.stringify_keys!
assert_equal @strings, @symbols.with_indifferent_access.dup.stringify_keys!
assert_equal @strings, @strings.with_indifferent_access.dup.stringify_keys!
assert_equal @strings, @mixed.with_indifferent_access.dup.stringify_keys!
end
def test_deep_stringify_keys_bang_for_hash_with_indifferent_access
assert_instance_of ActiveSupport::HashWithIndifferentAccess, @nested_symbols.with_indifferent_access.dup.deep_stringify_keys!
assert_equal @nested_strings, @nested_symbols.with_indifferent_access.deep_dup.deep_stringify_keys!
assert_equal @nested_strings, @nested_strings.with_indifferent_access.deep_dup.deep_stringify_keys!
assert_equal @nested_strings, @nested_mixed.with_indifferent_access.deep_dup.deep_stringify_keys!
end
def test_nested_under_indifferent_access
foo = { "foo" => SubclassingHash.new.tap { |h| h["bar"] = "baz" } }.with_indifferent_access
assert_kind_of ActiveSupport::HashWithIndifferentAccess, foo["foo"]
foo = { "foo" => NonIndifferentHash.new.tap { |h| h["bar"] = "baz" } }.with_indifferent_access
assert_kind_of NonIndifferentHash, foo["foo"]
foo = { "foo" => IndifferentHash.new.tap { |h| h["bar"] = "baz" } }.with_indifferent_access
assert_kind_of IndifferentHash, foo["foo"]
end
def test_indifferent_assorted
@strings = @strings.with_indifferent_access
@symbols = @symbols.with_indifferent_access
@mixed = @mixed.with_indifferent_access
assert_equal "a", @strings.__send__(:convert_key, :a)
assert_equal 1, @strings.fetch("a")
assert_equal 1, @strings.fetch(:a.to_s)
assert_equal 1, @strings.fetch(:a)
hashes = { :@strings => @strings, :@symbols => @symbols, :@mixed => @mixed }
method_map = { '[]': 1, fetch: 1, values_at: [1],
has_key?: true, include?: true, key?: true,
member?: true }
hashes.each do |name, hash|
method_map.sort_by(&:to_s).each do |meth, expected|
assert_equal(expected, hash.__send__(meth, "a"),
"Calling #{name}.#{meth} 'a'")
assert_equal(expected, hash.__send__(meth, :a),
"Calling #{name}.#{meth} :a")
end
end
assert_equal [1, 2], @strings.values_at("a", "b")
assert_equal [1, 2], @strings.values_at(:a, :b)
assert_equal [1, 2], @symbols.values_at("a", "b")
assert_equal [1, 2], @symbols.values_at(:a, :b)
assert_equal [1, 2], @mixed.values_at("a", "b")
assert_equal [1, 2], @mixed.values_at(:a, :b)
end
def test_indifferent_fetch_values
@mixed = @mixed.with_indifferent_access
assert_equal [1, 2], @mixed.fetch_values("a", "b")
assert_equal [1, 2], @mixed.fetch_values(:a, :b)
assert_equal [1, 2], @mixed.fetch_values(:a, "b")
assert_equal [1, "c"], @mixed.fetch_values(:a, :c) { |key| key }
assert_raise(KeyError) { @mixed.fetch_values(:a, :c) }
end
def test_indifferent_reading
hash = HashWithIndifferentAccess.new
hash["a"] = 1
hash["b"] = true
hash["c"] = false
hash["d"] = nil
assert_equal 1, hash[:a]
assert_equal true, hash[:b]
assert_equal false, hash[:c]
assert_nil hash[:d]
assert_nil hash[:e]
end
def test_indifferent_reading_with_nonnil_default
hash = HashWithIndifferentAccess.new(1)
hash["a"] = 1
hash["b"] = true
hash["c"] = false
hash["d"] = nil
assert_equal 1, hash[:a]
assert_equal true, hash[:b]
assert_equal false, hash[:c]
assert_nil hash[:d]
assert_equal 1, hash[:e]
end
def test_indifferent_writing
hash = HashWithIndifferentAccess.new
hash[:a] = 1
hash["b"] = 2
hash[3] = 3
assert_equal 1, hash["a"]
assert_equal 2, hash["b"]
assert_equal 1, hash[:a]
assert_equal 2, hash[:b]
assert_equal 3, hash[3]
end
def test_indifferent_update
hash = HashWithIndifferentAccess.new
hash[:a] = "a"
hash["b"] = "b"
updated_with_strings = hash.update(@strings)
updated_with_symbols = hash.update(@symbols)
updated_with_mixed = hash.update(@mixed)
assert_equal 1, updated_with_strings[:a]
assert_equal 1, updated_with_strings["a"]
assert_equal 2, updated_with_strings["b"]
assert_equal 1, updated_with_symbols[:a]
assert_equal 2, updated_with_symbols["b"]
assert_equal 2, updated_with_symbols[:b]
assert_equal 1, updated_with_mixed[:a]
assert_equal 2, updated_with_mixed["b"]
assert [updated_with_strings, updated_with_symbols, updated_with_mixed].all? { |h| h.keys.size == 2 }
end
def test_update_with_to_hash_conversion
hash = HashWithIndifferentAccess.new
hash.update HashByConversion.new(a: 1)
assert_equal 1, hash["a"]
end
def test_indifferent_merging
hash = HashWithIndifferentAccess.new
hash[:a] = "failure"
hash["b"] = "failure"
other = { "a" => 1, :b => 2 }
merged = hash.merge(other)
assert_equal HashWithIndifferentAccess, merged.class
assert_equal 1, merged[:a]
assert_equal 2, merged["b"]
hash.update(other)
assert_equal 1, hash[:a]
assert_equal 2, hash["b"]
end
def test_merge_with_to_hash_conversion
hash = HashWithIndifferentAccess.new
merged = hash.merge HashByConversion.new(a: 1)
assert_equal 1, merged["a"]
end
def test_indifferent_replace
hash = HashWithIndifferentAccess.new
hash[:a] = 42
replaced = hash.replace(b: 12)
assert hash.key?("b")
assert_not hash.key?(:a)
assert_equal 12, hash[:b]
assert_same hash, replaced
end
def test_replace_with_to_hash_conversion
hash = HashWithIndifferentAccess.new
hash[:a] = 42
replaced = hash.replace(HashByConversion.new(b: 12))
assert hash.key?("b")
assert_not hash.key?(:a)
assert_equal 12, hash[:b]
assert_same hash, replaced
end
def test_indifferent_merging_with_block
hash = HashWithIndifferentAccess.new
hash[:a] = 1
hash["b"] = 3
other = { "a" => 4, :b => 2, "c" => 10 }
merged = hash.merge(other) { |key, old, new| old > new ? old : new }
assert_equal HashWithIndifferentAccess, merged.class
assert_equal 4, merged[:a]
assert_equal 3, merged["b"]
assert_equal 10, merged[:c]
other_indifferent = HashWithIndifferentAccess.new("a" => 9, :b => 2)
merged = hash.merge(other_indifferent) { |key, old, new| old + new }
assert_equal HashWithIndifferentAccess, merged.class
assert_equal 10, merged[:a]
assert_equal 5, merged[:b]
end
def test_indifferent_reverse_merging
hash = HashWithIndifferentAccess.new key: :old_value
hash.reverse_merge! key: :new_value
assert_equal :old_value, hash[:key]
hash = HashWithIndifferentAccess.new("some" => "value", "other" => "value")
hash.reverse_merge!(some: "noclobber", another: "clobber")
assert_equal "value", hash[:some]
assert_equal "clobber", hash[:another]
end
def test_indifferent_with_defaults_aliases_reverse_merge
hash = HashWithIndifferentAccess.new key: :old_value
actual = hash.with_defaults key: :new_value
assert_equal :old_value, actual[:key]
hash = HashWithIndifferentAccess.new key: :old_value
hash.with_defaults! key: :new_value
assert_equal :old_value, hash[:key]
end
def test_indifferent_deleting
get_hash = proc { { a: "foo" }.with_indifferent_access }
hash = get_hash.call
assert_equal "foo", hash.delete(:a)
assert_nil hash.delete(:a)
hash = get_hash.call
assert_equal "foo", hash.delete("a")
assert_nil hash.delete("a")
end
def test_indifferent_select
hash = ActiveSupport::HashWithIndifferentAccess.new(@strings).select { |k, v| v == 1 }
assert_equal({ "a" => 1 }, hash)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, hash
end
def test_indifferent_select_returns_enumerator
enum = ActiveSupport::HashWithIndifferentAccess.new(@strings).select
assert_instance_of Enumerator, enum
end
def test_indifferent_select_returns_a_hash_when_unchanged
hash = ActiveSupport::HashWithIndifferentAccess.new(@strings).select { |k, v| true }
assert_instance_of ActiveSupport::HashWithIndifferentAccess, hash
end
def test_indifferent_select_bang
indifferent_strings = ActiveSupport::HashWithIndifferentAccess.new(@strings)
indifferent_strings.select! { |k, v| v == 1 }
assert_equal({ "a" => 1 }, indifferent_strings)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, indifferent_strings
end
def test_indifferent_reject
hash = ActiveSupport::HashWithIndifferentAccess.new(@strings).reject { |k, v| v != 1 }
assert_equal({ "a" => 1 }, hash)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, hash
end
def test_indifferent_reject_returns_enumerator
enum = ActiveSupport::HashWithIndifferentAccess.new(@strings).reject
assert_instance_of Enumerator, enum
end
def test_indifferent_reject_bang
indifferent_strings = ActiveSupport::HashWithIndifferentAccess.new(@strings)
indifferent_strings.reject! { |k, v| v != 1 }
assert_equal({ "a" => 1 }, indifferent_strings)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, indifferent_strings
end
def test_indifferent_transform_keys
hash = ActiveSupport::HashWithIndifferentAccess.new(@strings).transform_keys { |k| k * 2 }
assert_equal({ "aa" => 1, "bb" => 2 }, hash)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, hash
hash = ActiveSupport::HashWithIndifferentAccess.new(@strings).transform_keys { |k| k.to_sym }
assert_equal(1, hash[:a])
assert_equal(1, hash["a"])
assert_instance_of ActiveSupport::HashWithIndifferentAccess, hash
end
def test_indifferent_transform_keys_bang
indifferent_strings = ActiveSupport::HashWithIndifferentAccess.new(@strings)
indifferent_strings.transform_keys! { |k| k * 2 }
assert_equal({ "aa" => 1, "bb" => 2 }, indifferent_strings)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, indifferent_strings
indifferent_strings = ActiveSupport::HashWithIndifferentAccess.new(@strings)
indifferent_strings.transform_keys! { |k| k.to_sym }
assert_equal(1, indifferent_strings[:a])
assert_equal(1, indifferent_strings["a"])
assert_instance_of ActiveSupport::HashWithIndifferentAccess, indifferent_strings
end
def test_indifferent_transform_values
hash = ActiveSupport::HashWithIndifferentAccess.new(@strings).transform_values { |v| v * 2 }
assert_equal({ "a" => 2, "b" => 4 }, hash)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, hash
end
def test_indifferent_transform_values_bang
indifferent_strings = ActiveSupport::HashWithIndifferentAccess.new(@strings)
indifferent_strings.transform_values! { |v| v * 2 }
assert_equal({ "a" => 2, "b" => 4 }, indifferent_strings)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, indifferent_strings
end
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def test_indifferent_assoc
indifferent_strings = ActiveSupport::HashWithIndifferentAccess.new(@strings)
key, value = indifferent_strings.assoc(:a)
assert_equal("a", key)
assert_equal(1, value)
end
def test_indifferent_compact
hash_contain_nil_value = @strings.merge("z" => nil)
hash = ActiveSupport::HashWithIndifferentAccess.new(hash_contain_nil_value)
compacted_hash = hash.compact
assert_equal(@strings, compacted_hash)
assert_equal(hash_contain_nil_value, hash)
assert_instance_of ActiveSupport::HashWithIndifferentAccess, compacted_hash
empty_hash = ActiveSupport::HashWithIndifferentAccess.new
compacted_hash = empty_hash.compact
assert_equal compacted_hash, empty_hash
non_empty_hash = ActiveSupport::HashWithIndifferentAccess.new(foo: :bar)
compacted_hash = non_empty_hash.compact
assert_equal compacted_hash, non_empty_hash
end
def test_indifferent_to_hash
# Should convert to a Hash with String keys.
assert_equal @strings, @mixed.with_indifferent_access.to_hash
# Should preserve the default value.
mixed_with_default = @mixed.dup
mixed_with_default.default = "1234"
roundtrip = mixed_with_default.with_indifferent_access.to_hash
assert_equal @strings, roundtrip
assert_equal "1234", roundtrip.default
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# Ensure nested hashes are not HashWithIndifferentAccess
new_to_hash = @nested_mixed.with_indifferent_access.to_hash
assert_not new_to_hash.instance_of?(HashWithIndifferentAccess)
assert_not new_to_hash["a"].instance_of?(HashWithIndifferentAccess)
assert_not new_to_hash["a"]["b"].instance_of?(HashWithIndifferentAccess)
end
def test_lookup_returns_the_same_object_that_is_stored_in_hash_indifferent_access
hash = HashWithIndifferentAccess.new { |h, k| h[k] = [] }
hash[:a] << 1
assert_equal [1], hash[:a]
end
def test_with_indifferent_access_has_no_side_effects_on_existing_hash
hash = { content: [{ :foo => :bar, "bar" => "baz" }] }
hash.with_indifferent_access
assert_equal [:foo, "bar"], hash[:content].first.keys
end
def test_indifferent_hash_with_array_of_hashes
hash = { "urls" => { "url" => [ { "address" => "1" }, { "address" => "2" } ] } }.with_indifferent_access
assert_equal "1", hash[:urls][:url].first[:address]
hash = hash.to_hash
assert_not hash.instance_of?(HashWithIndifferentAccess)
assert_not hash["urls"].instance_of?(HashWithIndifferentAccess)
assert_not hash["urls"]["url"].first.instance_of?(HashWithIndifferentAccess)
end
def test_should_preserve_array_subclass_when_value_is_array
array = SubclassingArray.new
array << { "address" => "1" }
hash = { "urls" => { "url" => array } }.with_indifferent_access
assert_equal SubclassingArray, hash[:urls][:url].class
end
def test_should_preserve_array_class_when_hash_value_is_frozen_array
array = SubclassingArray.new
array << { "address" => "1" }
hash = { "urls" => { "url" => array.freeze } }.with_indifferent_access
assert_equal SubclassingArray, hash[:urls][:url].class
end
def test_stringify_and_symbolize_keys_on_indifferent_preserves_hash
h = HashWithIndifferentAccess.new
h[:first] = 1
h = h.stringify_keys
assert_equal 1, h["first"]
h = HashWithIndifferentAccess.new
h["first"] = 1
h = h.symbolize_keys
assert_equal 1, h[:first]
end
def test_deep_stringify_and_deep_symbolize_keys_on_indifferent_preserves_hash
h = HashWithIndifferentAccess.new
h[:first] = 1
h = h.deep_stringify_keys
assert_equal 1, h["first"]
h = HashWithIndifferentAccess.new
h["first"] = 1
h = h.deep_symbolize_keys
assert_equal 1, h[:first]
end
def test_to_options_on_indifferent_preserves_hash
h = HashWithIndifferentAccess.new
h["first"] = 1
h.to_options!
assert_equal 1, h["first"]
end
def test_to_options_on_indifferent_preserves_works_as_hash_with_dup
h = HashWithIndifferentAccess.new(a: { b: "b" })
dup = h.dup
dup[:a][:c] = "c"
assert_equal "c", h[:a][:c]
end
def test_indifferent_sub_hashes
h = { "user" => { "id" => 5 } }.with_indifferent_access
["user", :user].each { |user| [:id, "id"].each { |id| assert_equal 5, h[user][id], "h[#{user.inspect}][#{id.inspect}] should be 5" } }
h = { user: { id: 5 } }.with_indifferent_access
["user", :user].each { |user| [:id, "id"].each { |id| assert_equal 5, h[user][id], "h[#{user.inspect}][#{id.inspect}] should be 5" } }
end
def test_indifferent_duplication
# Should preserve default value
h = HashWithIndifferentAccess.new
h.default = "1234"
assert_equal h.default, h.dup.default
# Should preserve class for subclasses
h = IndifferentHash.new
assert_equal h.class, h.dup.class
end
def test_nested_dig_indifferent_access
data = { "this" => { "views" => 1234 } }.with_indifferent_access
assert_equal 1234, data.dig(:this, :views)
end
def test_argless_default_with_existing_nil_key
h = Hash.new(:default).merge(nil => "defined").with_indifferent_access
assert_equal :default, h.default
end
def test_default_with_argument
h = Hash.new { 5 }.merge(1 => 2).with_indifferent_access
assert_equal 5, h.default(1)
end
def test_default_proc
h = ActiveSupport::HashWithIndifferentAccess.new { |hash, key| key }
assert_nil h.default
assert_equal "foo", h.default("foo")
assert_equal "foo", h.default(:foo)
end
def test_double_conversion_with_nil_key
h = { nil => "defined" }.with_indifferent_access.with_indifferent_access
assert_nil h[:undefined_key]
end
def test_assorted_keys_not_stringified
original = { Object.new => 2, 1 => 2, [] => true }
indiff = original.with_indifferent_access
assert_not(indiff.keys.any? { |k| k.kind_of? String }, "A key was converted to a string!")
end
def test_deep_merge_on_indifferent_access
hash_1 = HashWithIndifferentAccess.new(a: "a", b: "b", c: { c1: "c1", c2: "c2", c3: { d1: "d1" } })
hash_2 = HashWithIndifferentAccess.new(a: 1, c: { c1: 2, c3: { d2: "d2" } })
hash_3 = { a: 1, c: { c1: 2, c3: { d2: "d2" } } }
expected = { "a" => 1, "b" => "b", "c" => { "c1" => 2, "c2" => "c2", "c3" => { "d1" => "d1", "d2" => "d2" } } }
assert_equal expected, hash_1.deep_merge(hash_2)
assert_equal expected, hash_1.deep_merge(hash_3)
hash_1.deep_merge!(hash_2)
assert_equal expected, hash_1
end
def test_store_on_indifferent_access
hash = HashWithIndifferentAccess.new
hash.store(:test1, 1)
hash.store("test1", 11)
hash[:test2] = 2
hash["test2"] = 22
expected = { "test1" => 11, "test2" => 22 }
assert_equal expected, hash
end
def test_constructor_on_indifferent_access
hash = HashWithIndifferentAccess[:foo, 1]
assert_equal 1, hash[:foo]
assert_equal 1, hash["foo"]
hash[:foo] = 3
assert_equal 3, hash[:foo]
assert_equal 3, hash["foo"]
end
def test_indifferent_slice
original = { a: "x", b: "y", c: 10 }.with_indifferent_access
expected = { a: "x", b: "y" }.with_indifferent_access
[["a", "b"], [:a, :b]].each do |keys|
# Should return a new hash with only the given keys.
assert_equal expected, original.slice(*keys), keys.inspect
assert_not_equal expected, original
end
end
def test_indifferent_slice_inplace
original = { a: "x", b: "y", c: 10 }.with_indifferent_access
expected = { c: 10 }.with_indifferent_access
[["a", "b"], [:a, :b]].each do |keys|
# Should replace the hash with only the given keys.
copy = original.dup
assert_equal expected, copy.slice!(*keys)
end
end
def test_indifferent_slice_access_with_symbols
original = { "login" => "bender", "password" => "shiny", "stuff" => "foo" }
original = original.with_indifferent_access
slice = original.slice(:login, :password)
assert_equal "bender", slice[:login]
assert_equal "bender", slice["login"]
end
def test_indifferent_without
original = { a: "x", b: "y", c: 10 }.with_indifferent_access
expected = { c: 10 }.with_indifferent_access
[["a", "b"], [:a, :b]].each do |keys|
# Should return a new hash without the given keys.
assert_equal expected, original.without(*keys), keys.inspect
assert_not_equal expected, original
end
end
def test_indifferent_extract
original = { :a => 1, "b" => 2, :c => 3, "d" => 4 }.with_indifferent_access
expected = { a: 1, b: 2 }.with_indifferent_access
remaining = { c: 3, d: 4 }.with_indifferent_access
[["a", "b"], [:a, :b]].each do |keys|
copy = original.dup
assert_equal expected, copy.extract!(*keys)
assert_equal remaining, copy
end
end
def test_new_with_to_hash_conversion
hash = HashWithIndifferentAccess.new(HashByConversion.new(a: 1))
assert hash.key?("a")
assert_equal 1, hash[:a]
end
def test_dup_with_default_proc
hash = HashWithIndifferentAccess.new
hash.default_proc = proc { |h, v| raise "walrus" }
assert_nothing_raised { hash.dup }
end
def test_dup_with_default_proc_sets_proc
hash = HashWithIndifferentAccess.new
hash.default_proc = proc { |h, k| k + 1 }
new_hash = hash.dup
assert_equal 3, new_hash[2]
new_hash.default = 2
assert_equal 2, new_hash[:non_existent]
end
def test_to_hash_with_raising_default_proc
hash = HashWithIndifferentAccess.new
hash.default_proc = proc { |h, k| raise "walrus" }
assert_nothing_raised { hash.to_hash }
end
def test_new_with_to_hash_conversion_copies_default
normal_hash = Hash.new(3)
normal_hash[:a] = 1
hash = HashWithIndifferentAccess.new(HashByConversion.new(normal_hash))
assert_equal 1, hash[:a]
assert_equal 3, hash[:b]
end
def test_new_with_to_hash_conversion_copies_default_proc
normal_hash = Hash.new { 1 + 2 }
normal_hash[:a] = 1
hash = HashWithIndifferentAccess.new(HashByConversion.new(normal_hash))
assert_equal 1, hash[:a]
assert_equal 3, hash[:b]
end
def test_inheriting_from_top_level_hash_with_indifferent_access_preserves_ancestors_chain
klass = Class.new(::HashWithIndifferentAccess)
assert_equal ActiveSupport::HashWithIndifferentAccess, klass.ancestors[1]
end
def test_inheriting_from_hash_with_indifferent_access_properly_dumps_ivars
klass = Class.new(::HashWithIndifferentAccess) do
def initialize(*)
@foo = "bar"
super
end
end
yaml_output = klass.new.to_yaml
# `hash-with-ivars` was introduced in 2.0.9 (https://git.io/vyUQW)
if Gem::Version.new(Psych::VERSION) >= Gem::Version.new("2.0.9")
assert_includes yaml_output, "hash-with-ivars"
assert_includes yaml_output, "@foo: bar"
else
assert_includes yaml_output, "hash"
end
end
def test_should_use_default_proc_for_unknown_key
hash_wia = HashWithIndifferentAccess.new { 1 + 2 }
assert_equal 3, hash_wia[:new_key]
end
def test_should_return_nil_if_no_key_is_supplied
hash_wia = HashWithIndifferentAccess.new { 1 + 2 }
assert_nil hash_wia.default
end
def test_should_use_default_value_for_unknown_key
hash_wia = HashWithIndifferentAccess.new(3)
assert_equal 3, hash_wia[:new_key]
end
def test_should_use_default_value_if_no_key_is_supplied
hash_wia = HashWithIndifferentAccess.new(3)
assert_equal 3, hash_wia.default
end
def test_should_nil_if_no_default_value_is_supplied
hash_wia = HashWithIndifferentAccess.new
assert_nil hash_wia.default
end
def test_should_return_dup_for_with_indifferent_access
hash_wia = HashWithIndifferentAccess.new
assert_equal hash_wia, hash_wia.with_indifferent_access
assert_not_same hash_wia, hash_wia.with_indifferent_access
end
def test_allows_setting_frozen_array_values_with_indifferent_access
value = [1, 2, 3].freeze
hash = HashWithIndifferentAccess.new
hash[:key] = value
assert_equal hash[:key], value
end
def test_should_copy_the_default_value_when_converting_to_hash_with_indifferent_access
hash = Hash.new(3)
hash_wia = hash.with_indifferent_access
assert_equal 3, hash_wia.default
end
def test_should_copy_the_default_proc_when_converting_to_hash_with_indifferent_access
hash = Hash.new do
2 + 1
end
assert_equal 3, hash[:foo]
hash_wia = hash.with_indifferent_access
assert_equal 3, hash_wia[:foo]
assert_equal 3, hash_wia[:bar]
end
end