Project: RSpec Mocks 2.12

Publisher: RSpec

expect a message on any instance of a class

Use any_instance.should_receive to set an expectation that one (and only
one) instance of a class receives a message before the example is completed.

The spec will fail if no instance receives a message.

Scenarios

expect a message on any instance of a class

Given

a file named "example_spec.rb" with:

describe "any_instance.should_receive" do
  it "verifies that one instance of the class receives the message" do
    Object.any_instance.should_receive(:foo).and_return(:return_value)

    o = Object.new
    o.foo.should eq(:return_value)
  end
end

When

I run rspec example_spec.rb

Then

the examples should all pass

Last published over 5 years ago by alindeman.

expect a message on any instance of a class

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