method

stub

v2_1_10 - Show latest stable - Class: Object

stub(name, val_or_callable, &block)

public

Add a temporary stubbed method replacing name for the duration of the block. If val_or_callable responds to #call, then it returns the result of calling it, otherwise returns the value as-is. Cleans up the stub at the end of the block. The method name must exist before stubbing.

def test_stale_eh
  obj_under_test = Something.new
  refute obj_under_test.stale?

  Time.stub :now, Time.at(0) do
    assert obj_under_test.stale?
  end
end

# File lib/minitest/mock.rb, line 172
  def stub name, val_or_callable, &block
    new_name = "__minitest_stub__#{name}"

    metaclass = class << self; self; end

    if respond_to? name and not methods.map(&:to_s).include? name.to_s then
      metaclass.send :define_method, name do |*args|
        super(*args)
      end
    end

    metaclass.send :alias_method, new_name, name

    metaclass.send :define_method, name do |*args|
      if val_or_callable.respond_to? :call then
        val_or_callable.call(*args)
      else
        val_or_callable
      end
    end

    yield self
  ensure
    metaclass.send :undef_method, name
    metaclass.send :alias_method, name, new_name
    metaclass.send :undef_method, new_name
  end

stub

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