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require_relative '../../../spec_helper'
ruby_version_is "3.3" do
describe "ObjectSpace::WeakKeyMap#[]=" do
def should_accept(map, key, value)
(map[key] = value).should == value
map.should.key?(key)
map[key].should == value
end
def should_not_accept(map, key, value)
-> { map[key] = value }.should raise_error(ArgumentError)
end
it "is correct" do
map = ObjectSpace::WeakKeyMap.new
key1, key2 = %w[a b].map(&:upcase)
ref1, ref2 = %w[x y]
should_accept(map, key1, ref1)
should_accept(map, key1, ref1)
should_accept(map, key2, ref2)
map[key1].should == ref1
end
it "requires the keys to implement #hash" do
map = ObjectSpace::WeakKeyMap.new
-> { map[BasicObject.new] = 1 }.should raise_error(NoMethodError, "undefined method `hash' for an instance of BasicObject")
end
it "accepts frozen keys or values" do
map = ObjectSpace::WeakKeyMap.new
x = Object.new
should_accept(map, x, true)
should_accept(map, x, false)
should_accept(map, x, 42)
should_accept(map, x, :foo)
y = Object.new.freeze
should_accept(map, x, y)
should_accept(map, y, x)
end
it "rejects symbols as keys" do
map = ObjectSpace::WeakKeyMap.new
should_not_accept(map, :foo, true)
should_not_accept(map, rand.to_s.to_sym, true)
end
it "rejects integers as keys" do
map = ObjectSpace::WeakKeyMap.new
should_not_accept(map, 42, true)
should_not_accept(map, 2 ** 68, true)
end
it "rejects floats as keys" do
map = ObjectSpace::WeakKeyMap.new
should_not_accept(map, 4.2, true)
end
it "rejects booleans as keys" do
map = ObjectSpace::WeakKeyMap.new
should_not_accept(map, true, true)
should_not_accept(map, false, true)
end
it "rejects nil as keys" do
map = ObjectSpace::WeakKeyMap.new
should_not_accept(map, nil, true)
end
end
end
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