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Ruby Rails Layouts and CSS Frameworks Working with Rails Layouts Toggling Todo Item Completion

Posted by Simon Walsh
Simon Walsh
Courses Plus Student 1,741 Points

Use of curly braces versus parenthesis with "expect"

Could someone explain the difference between passing a code block to expect such as...

expect{todo_item.toggle_completion!}.to change { todo_item.completed_at }

and passing and argument to expect....

expect(todo_item.completed?).to be_true

I apologise if this question is somewhat basic....

Simon

1 Answer

Dennis Brown
Dennis Brown
28,742 Points
Dennis Brown
Dennis Brown
28,742 Points

I know this is old, but I had this same question.

While I am not sure on the actual specifics yet I found after some tests that using braces returns the actual output of the method, where the parens sends back a single value defining the result.