Thumbnail::Client#new
- should default to the thumbnail action
- should set the action as redirect if specified
- should raise an error if the action is neither redirect nor thumbnail
- should raise an error if the access_key_id is not specified
- should raise an error if the secret_access_key is not specified
- should default the size to large
- should set the size to small if specified
- should raise an error if the size is neither large nor small
- should raise an error if a default_image is specified for a Thumbnail action

Thumbnail::Client#new for a redirect
- should set the default_image if specified

Thumbnail#query
- should calculate the signature and timestamp

Thumbnail#calculate_signature_and_timestamp
- should calculate the signature
- should set the (correctly formatted) timestamp

Thumbnail#query with thumbnail action and a single url
- should compose a thumbnail single query

Thumbnail::Client#query with thumbnail action and an array of urls
- should compose a thumbnail batch query

Thumbnail::Client#query with redirect action
- should compose a redirect query

Thumbnail::Client#thumbnail_query_single
- should compose the query url correctly

Thumbnail::Client#thumbnail_query_batch
- should compose the query url correctly

Thumbnail::Client#redirect_query with a default_image
- should compose the query url correctly

Thumbnail::Client#redirect_query without a default_image
- should compose the query url correctly

Thumbnail::Client#get with a thumbnail action
- should set the url string if given a single url
- should set the url array if given an array of urls
- should parse the url before conducting the query
- should use net/https to conduct the query
- should build a response object from the xml

Thumbnail::Client#get with one or more invalid urls
- should raise an error with one url that is invalid
- should raise an error if any of the urls in its give array are invalid

Thumbnail::Client#get with a redirect action
- should raise an error if given an array of urls
- should calculate the query url
- should return the redirect query