I want to check whether the block is called in my function using rspec. Below is my code:
class SP
def speak(options={},&block)
puts "speak called"
block.call()
rescue ZeroDivisionError => e
end
end
describe SP do
it "testing speak functionality can receive a block" do
sp = SP.new
def test_func
a = 1
end
sp_mock = double(sp)
expect(sp_mock).to receive(:speak).with(test_func)
sp.speak(test_func)
end
end
Below is my error:
SP testing speak functionality can receive a block
Failure/Error: block.call()
NoMethodError:
undefined method `call' for nil:NilClass
# ./test.rb:9:in `speak'
# ./test.rb:25:in `block (2 levels) in <top (required)>'
Could you please help. I spent lots of time in that.
You have to use one of RSpec's yield matcher :
describe SP do
it "testing speak functionality can receive a block" do
sp = SP.new
expect { |b| sp.speak(&b) }.to yield_control
end
end
I think Stefan provided the best answer. However I wanted to point out that you should be testing the behaviour of the code instead of implementation details.
describe SP do
it "testing speak functionality can receive a block" do
sp = SP.new
called = false
test_func = -> () { called = true }
sp.speak(&test_func)
expect(called).to eql(true)
end
end
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