model_testing_rails.markdown

Model Testing in Rails -- Challenges

Add tests for the following specifications and make them pass one at a time.

• 1. A fan should not be valid without an email.
• 2. A location is valid with a city, state, and country and should be invalid if they are missing a city, state, or country.
• 3. A city must be unique within the scope of a state. For example, we can have Bloomington, IL, and Bloomington, IN, but we can't have two of Bloomington, IN.
• 4. A state must be exactly two characters. Take a look at the documentation to figure out how to do exact length validations.
• 5. Cities and countries may only contain uppercase letters, lowercase letters, and spaces.
• 6. Donations must have an amount that can only be whole numbers. Take a look at the documentation for a built-in way to write this.
• 7. A donations must have a status. Donation statuses can be "processed", "pending", or "cancelled". No other values should be allowed.
• 8. Donations of 1 dollar are not allowed. Don't be cheap.
• 9. When calling full_name on a location, it should return a string of the city, state, and country. (Example: location.full_name returns "Denver, CO, USA")
• 10. A donation should belong to a fan.
• 11. Fan.all should return all fans ordered alphabetically by name.
• 12. Fan.joined_since(date) should return all the fans that have joined since that date.