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* For easier modifications of ruby/spec by MRI developers. * .gitignore: track changes under spec. * spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec. These files can therefore be updated like any other file in MRI. Instructions are provided in spec/README. [Feature #13156] [ruby-core:79246] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
46 lines
1.3 KiB
Ruby
46 lines
1.3 KiB
Ruby
require File.expand_path('../../../spec_helper', __FILE__)
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require File.expand_path('../fixtures/classes', __FILE__)
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describe "Hash#default" do
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it "returns the default value" do
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h = Hash.new(5)
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h.default.should == 5
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h.default(4).should == 5
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{}.default.should == nil
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{}.default(4).should == nil
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end
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it "uses the default proc to compute a default value, passing given key" do
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h = Hash.new { |*args| args }
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h.default(nil).should == [h, nil]
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h.default(5).should == [h, 5]
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end
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it "calls default proc with nil arg if passed a default proc but no arg" do
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h = Hash.new { |*args| args }
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h.default.should == nil
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end
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end
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describe "Hash#default=" do
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it "sets the default value" do
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h = {}
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h.default = 99
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h.default.should == 99
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end
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it "unsets the default proc" do
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[99, nil, lambda { 6 }].each do |default|
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h = Hash.new { 5 }
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h.default_proc.should_not == nil
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h.default = default
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h.default.should == default
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h.default_proc.should == nil
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end
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end
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it "raises a RuntimeError if called on a frozen instance" do
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lambda { HashSpecs.frozen_hash.default = nil }.should raise_error(RuntimeError)
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lambda { HashSpecs.empty_frozen_hash.default = nil }.should raise_error(RuntimeError)
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end
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end
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