cheat_sheet.md

#RSpec Cheat Sheet

##Commonly Used Terms

• describe: is a block that allows your code to be more readable and organized visually, allows you to discuss specific objects or methods

• context: is a block that functionally behaves the same way as describe, but should be used when describing different situations or "contexts"

• it:a block that allows you to test methods on the subject that return a simple value.

• before(:each):is a block of code that runs before each test inside of it

• before(:all):runs only once, before all the tests inside of it have started

• subject: allows you to control the initialization of the 'subject under test' and calls new on class your testing. This works the same way as before(:each) or before(:all) but could be considered more "semantic". With RSpec, it will usually be an instance of the object/class you are testing.

• let: used to define a memoized helper method. The value will be cached across multiple calls in the same example but not across examples. Let is lazy-evaluated, meaning it is not evaluated until the first time the method it defines is invoked.

• expectations: begins with expect(IUT).to, or "Item Under Test"

• matchers:rspec contains built in matchers that can be used with expect(..).to or expect(..).not_to to define positive and negative expectations respectively on an object.