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require File.expand_path('../../../spec_helper', __FILE__)
describe 'Binding#local_variable_defined?' do
it 'returns false when a variable is not defined' do
binding.local_variable_defined?(:foo).should == false
end
it 'returns true when a regular local variable is defined' do
foo = 10
binding.local_variable_defined?(:foo).should == true
end
it 'returns true when a local variable is defined using eval()' do
bind = binding
bind.eval('foo = 10')
bind.local_variable_defined?(:foo).should == true
end
it 'returns true when a local variable is defined using Binding#local_variable_set' do
bind = binding
bind.local_variable_set(:foo, 10)
bind.local_variable_defined?(:foo).should == true
end
it 'returns true when a local variable is defined in a parent scope' do
foo = 10
lambda {
binding.local_variable_defined?(:foo)
}.call.should == true
end
it 'allows usage of a String as the variable name' do
foo = 10
binding.local_variable_defined?('foo').should == true
end
it 'allows usage of an object responding to #to_str as the variable name' do
foo = 10
name = mock(:obj)
name.stub!(:to_str).and_return('foo')
binding.local_variable_defined?(name).should == true
end
end
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