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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "Binding#local_variable_get" do
it "reads local variables captured in the binding" do
a = 42
bind = binding
bind.local_variable_get(:a).should == 42
end
it "raises a NameError for missing variables" do
bind = BindingSpecs::Demo.new(1).get_empty_binding
-> {
bind.local_variable_get(:no_such_variable)
}.should raise_error(NameError)
end
it "reads variables added later to the binding" do
bind = BindingSpecs::Demo.new(1).get_empty_binding
-> {
bind.local_variable_get(:a)
}.should raise_error(NameError)
bind.local_variable_set(:a, 42)
bind.local_variable_get(:a).should == 42
end
it 'gets a local variable defined in a parent scope' do
number = 10
-> {
binding.local_variable_get(:number)
}.call.should == 10
end
it 'gets a local variable defined using eval()' do
bind = binding
bind.eval('number = 10')
bind.local_variable_get(:number).should == 10
end
it "raises a NameError on global access" do
bind = binding
-> { bind.local_variable_get(:$0) }.should raise_error(NameError)
end
it "raises a NameError on special variable access" do
bind = binding
-> { bind.local_variable_get(:$~) }.should raise_error(NameError)
-> { bind.local_variable_get(:$_) }.should raise_error(NameError)
end
end
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