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describe :hash_update, :shared => true do
it "adds the entries from other, overwriting duplicate keys. Returns self" do
h = new_hash(:_1 => 'a', :_2 => '3')
h.send(@method, :_1 => '9', :_9 => 2).should equal(h)
h.should == new_hash(:_1 => "9", :_2 => "3", :_9 => 2)
end
it "sets any duplicate key to the value of block if passed a block" do
h1 = new_hash(:a => 2, :b => -1)
h2 = new_hash(:a => -2, :c => 1)
h1.send(@method, h2) { |k,x,y| 3.14 }.should equal(h1)
h1.should == new_hash(:c => 1, :b => -1, :a => 3.14)
h1.send(@method, h1) { nil }
h1.should == new_hash(:a => nil, :b => nil, :c => nil)
end
it "tries to convert the passed argument to a hash using #to_hash" do
obj = mock('{1=>2}')
obj.should_receive(:to_hash).and_return(new_hash(1 => 2))
new_hash(3 => 4).send(@method, obj).should == new_hash(1 => 2, 3 => 4)
end
it "does not call to_hash on hash subclasses" do
new_hash(3 => 4).send(@method, HashSpecs::ToHashHash[1 => 2]).should == new_hash(1 => 2, 3 => 4)
end
it "processes entries with same order as merge()" do
h = new_hash(1 => 2, 3 => 4, 5 => 6, "x" => nil, nil => 5, [] => [])
merge_bang_pairs = []
merge_pairs = []
h.merge(h) { |*arg| merge_pairs << arg }
h.send(@method, h) { |*arg| merge_bang_pairs << arg }
merge_bang_pairs.should == merge_pairs
end
ruby_version_is ""..."1.9" do
it "raises a TypeError if called on a non-empty, frozen instance" do
lambda { HashSpecs.frozen_hash.send(@method, 1 => 2) }.should raise_error(TypeError)
end
it "does not raise an exception on a frozen instance that would not be modified" do
hash = HashSpecs.frozen_hash.send(@method, HashSpecs.empty_frozen_hash)
hash.should == HashSpecs.frozen_hash
end
end
ruby_version_is "1.9" do
it "raises a RuntimeError on a frozen instance that is modified" do
lambda do
HashSpecs.frozen_hash.send(@method, 1 => 2)
end.should raise_error(RuntimeError)
end
it "checks frozen status before coercing an object with #to_hash" do
obj = mock("to_hash frozen")
# This is necessary because mock cleanup code cannot run on the frozen
# object.
def obj.to_hash() raise Exception, "should not receive #to_hash" end
obj.freeze
lambda { HashSpecs.frozen_hash.send(@method, obj) }.should raise_error(RuntimeError)
end
# see redmine #1571
it "raises a RuntimeError on a frozen instance that would not be modified" do
lambda do
HashSpecs.frozen_hash.send(@method, HashSpecs.empty_frozen_hash)
end.should raise_error(RuntimeError)
end
end
end
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