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describe :hash_store, :shared => true do
it "associates the key with the value and return the value" do
h = new_hash(:a => 1)
h.send(@method, :b, 2).should == 2
h.should == new_hash(:b=>2, :a=>1)
end
it "duplicates string keys using dup semantics" do
# dup doesn't copy singleton methods
key = "foo"
def key.reverse() "bar" end
h = new_hash
h.send(@method, key, 0)
h.keys[0].reverse.should == "oof"
end
it "stores unequal keys that hash to the same value" do
h = new_hash
k1 = ["x"]
k2 = ["y"]
# So they end up in the same bucket
k1.should_receive(:hash).and_return(0)
k2.should_receive(:hash).and_return(0)
h[k1] = 1
h[k2] = 2
h.size.should == 2
end
it "accepts keys with private #hash method" do
key = HashSpecs::KeyWithPrivateHash.new
h = new_hash
h[key] = "foo"
h[key].should == "foo"
end
it "duplicates and freezes string keys" do
key = "foo"
h = new_hash
h.send(@method, key, 0)
key << "bar"
h.should == new_hash("foo" => 0)
h.keys[0].frozen?.should == true
end
it "doesn't duplicate and freeze already frozen string keys" do
key = "foo".freeze
h = new_hash
h.send(@method, key, 0)
h.keys[0].should equal(key)
end
ruby_version_is ""..."1.9" do
it "raises a TypeError if called on a frozen instance" do
lambda { HashSpecs.frozen_hash.send(@method, 1, 2) }.should raise_error(TypeError)
end
end
ruby_version_is "1.9" do
it "raises a RuntimeError if called on a frozen instance" do
lambda { HashSpecs.frozen_hash.send(@method, 1, 2) }.should raise_error(RuntimeError)
end
end
it "does not raise an exception if changing the value of an existing key during iteration" do
hash = {1 => 2, 3 => 4, 5 => 6}
hash.each { hash.send(@method, 1, :foo) }
hash.should == {1 => :foo, 3 => 4, 5 => 6}
end
end
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