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61 lines
1.8 KiB
Ruby
61 lines
1.8 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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describe "Hash#initialize" do
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it "is private" do
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Hash.should have_private_instance_method("initialize")
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end
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it "can be used to reset default_proc" do
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h = { "foo" => 1, "bar" => 2 }
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h.default_proc.should == nil
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h.send(:initialize) { |_, k| k * 2 }
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h.default_proc.should_not == nil
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h["a"].should == "aa"
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end
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it "can be used to reset the default value" do
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h = {}
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h.default = 42
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h.default.should == 42
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h.send(:initialize, 1)
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h.default.should == 1
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h.send(:initialize)
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h.default.should == nil
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end
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it "receives the arguments passed to Hash#new" do
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HashSpecs::NewHash.new(:one, :two)[0].should == :one
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HashSpecs::NewHash.new(:one, :two)[1].should == :two
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end
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it "does not change the storage, only the default value or proc" do
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h = HashSpecs::SubHashSettingInInitialize.new
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h.to_a.should == [[:foo, :bar]]
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h = HashSpecs::SubHashSettingInInitialize.new(:default)
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h.to_a.should == [[:foo, :bar]]
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h = HashSpecs::SubHashSettingInInitialize.new { :default_block }
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h.to_a.should == [[:foo, :bar]]
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end
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it "returns self" do
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h = Hash.new
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h.send(:initialize).should equal(h)
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end
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it "raises a FrozenError if called on a frozen instance" do
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block = -> { HashSpecs.frozen_hash.instance_eval { initialize() }}
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block.should raise_error(FrozenError)
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block = -> { HashSpecs.frozen_hash.instance_eval { initialize(nil) } }
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block.should raise_error(FrozenError)
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block = -> { HashSpecs.frozen_hash.instance_eval { initialize(5) } }
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block.should raise_error(FrozenError)
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block = -> { HashSpecs.frozen_hash.instance_eval { initialize { 5 } } }
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block.should raise_error(FrozenError)
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end
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end
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