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require_relative '../../../spec_helper'
describe "ObjectSpace::WeakKeyMap#delete" do
it "removes the entry and returns the deleted value" do
m = ObjectSpace::WeakKeyMap.new
key = Object.new
value = Object.new
m[key] = value
m.delete(key).should == value
m.key?(key).should == false
end
it "uses equality semantic" do
m = ObjectSpace::WeakKeyMap.new
key = "foo".upcase
value = Object.new
m[key] = value
m.delete("foo".upcase).should == value
m.key?(key).should == false
end
it "calls supplied block if the key is not found" do
key = Object.new
m = ObjectSpace::WeakKeyMap.new
return_value = m.delete(key) do |yielded_key|
yielded_key.should == key
5
end
return_value.should == 5
end
it "returns nil if the key is not found when no block is given" do
m = ObjectSpace::WeakKeyMap.new
m.delete(Object.new).should == nil
end
it "returns nil when a key cannot be garbage collected" do
map = ObjectSpace::WeakKeyMap.new
map.delete(1).should == nil
map.delete(1.0).should == nil
map.delete(:a).should == nil
map.delete(true).should == nil
map.delete(false).should == nil
map.delete(nil).should == nil
end
end
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