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require File.expand_path('../../../spec_helper', __FILE__)
describe "Binding#local_variables" do
it "returns an Array" do
binding.local_variables.should be_kind_of(Array)
end
it "includes local variables in the current scope" do
a = 1
b = nil
binding.local_variables.should == [:a, :b]
end
it "includes local variables defined after calling binding.local_variables" do
binding.local_variables.should == [:a, :b]
a = 1
b = 2
end
it "includes local variables of inherited scopes and eval'ed context" do
p = proc { |a| b = 1; eval("c = 2; binding.local_variables") }
p.call.should == [:c, :a, :b, :p]
end
it "includes shadowed local variables only once" do
a = 1
proc { |a| binding.local_variables }.call(2).should == [:a]
end
it "includes new variables defined in the binding" do
b = binding
b.local_variable_set :a, 42
b.local_variables.should == [:a, :b]
end
end
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