99c5cddb7d
This value should be used as a default, and allows the parent `merge` method to "just work" most of the time.
61 lines
1.3 KiB
Ruby
61 lines
1.3 KiB
Ruby
require File.expand_path("../../../../base", __FILE__)
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describe Vagrant::Plugin::V2::Config do
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include_context "unit"
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let(:foo_class) do
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Class.new(described_class) do
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attr_accessor :one
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attr_accessor :two
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end
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end
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let(:unset_value) { described_class.const_get("UNSET_VALUE") }
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describe "merging" do
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it "should merge by default by simply copying each instance variable" do
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one = foo_class.new
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one.one = 2
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one.two = 1
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two = foo_class.new
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two.two = 5
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result = one.merge(two)
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result.one.should == 2
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result.two.should == 5
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end
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it "prefers any set value over an UNSET_VALUE" do
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one = foo_class.new
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one.one = 1
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one.two = 2
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two = foo_class.new
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two.one = unset_value
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two.two = 5
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result = one.merge(two)
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result.one.should == 1
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result.two.should == 5
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end
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it "doesn't merge values that start with a double underscore" do
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one = foo_class.new
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one.one = 1
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one.two = 1
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one.instance_variable_set(:@__bar, "one")
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two = foo_class.new
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two.two = 2
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two.instance_variable_set(:@__bar, "two")
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# Merge and verify
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result = one.merge(two)
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result.one.should == 1
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result.two.should == 2
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result.instance_variable_get(:@__bar).should be_nil
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end
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end
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end
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