Add support for multiple yield control combinations

lib/rspec/matchers/built_in/yield.rb

@@ -202,6 +202,8 @@ def count_constraint_to_number(n)
 
         def failure_reason
           return ' but was not a block' unless @probe.has_block?
+          return "#{human_readable_expectation_type}#{human_readable_count(@expected_yields_count)} but did not yield" if @probe.num_yields.zero?
+
           "#{human_readable_expectation_type}#{human_readable_count(@expected_yields_count)}" \
           " but yielded#{human_readable_count(@probe.num_yields)}"
         end

spec/rspec/matchers/built_in/yield_spec.rb

@@ -61,6 +61,24 @@ def each_arg(*args, &block)
       }.to fail_with(/expected given block to yield control but/)
     end
 
+    it 'fails if the block does not yield the correct number of times' do
+      expect {
+        expect { |b| 0.times.each(&b) }.to yield_control.at_least(:once)
+      }.to fail_with(/expected given block to yield control at least once but did not yield/)
+
+      expect {
+        expect { |b| 2.times.each(&b) }.to yield_control.at_most(:once)
+      }.to fail_with(/expected given block to yield control at most once but yielded twice/)
+
+      expect {
+        expect { |b| 1.times.each(&b) }.to yield_control.at_least(:twice)
+      }.to fail_with(/expected given block to yield control at least twice but yielded once/)
+
+      expect {
+        expect { |b| 0.times.each(&b) }.to yield_control
+      }.to fail_with(/expected given block to yield control but did not yield/)
+    end
+
     it 'does not return a meaningful value from the block' do
       val = nil
       expect { |b| val = _yield_with_args(&b) }.to yield_control