We can't assign @view_context_class here, define super() in test instead if we want to avoid warnings.

'The scheme name consists of a letter followed by any combination of letters, digits, and the plus ("+"), period ("."), or hyphen ("-") characters; and is terminated by a colon (":").'

Avoid (@_var ||= nil) pattern by using initialize methods and ensuring everyone calls super as expected.

Remove warings from rescues: don't define more than once debug_hash method and ask if @response if defined.

Signed-off-by: NJosé Valim <jose.valim@gmail.com>

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>

Signed-off-by: NSantiago Pastorino <santiago@wyeworks.com>