Writing test case in Rspec to handle syntax error

Question

I am new to Rspec. I am writing a spec for a controller. Is it possible to catch syntax errors in the code with spec ie I would like to write case for handling syntax error in controller with Rspec. Thanks in advance.

Answer 1

in theory you could pass a piece of code as a string to eval or load a specific file that contains syntax errors and rescue those with rescue Exception => e .

but may i ask WHY?

Answer 2

Use eval like bellow.

describe "Backreferences to Non-Existent Capturing Groups" do
  describe '/(a)b\1/' do
    it { expect { eval '"aba".match(/(a)\1/)' }.to_not raise_error }
  end

  describe '/(a)b\2/' do
    it { expect { eval '"aba".match(/(a)\2/)' }.to raise_error(SyntaxError) }
  end
end