image = user_thumbnail_tiny(user, :class => "foo")
assert_match %r{^<img class="foo" .* src="/images/avatar.svg" />$}, image
image = user_thumbnail_tiny(gravatar_user)
image = user_thumbnail_tiny(user, :class => "foo")
assert_match %r{^<img class="foo" .* src="/images/avatar.svg" />$}, image
image = user_thumbnail_tiny(gravatar_user)