yield matchers - Built in matchers - RSpec Expectations - RSpec - Relish

There are four related matchers that allow you to specify whether or not a method yields, how many times it yields, whether or not it yields with arguments, and what those arguments are. yield_control matches if the method-under-test yields, regardless of whether or not arguments are yielded. yield_with_args matches if the method-under-test yields with arguments. If arguments are provided to this

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