# Removing a role from a non-existent user should fail
assert_difference "UserRole.count", 0 do
post :revoke, :display_name => "non_existent_user", :role => role
# Removing a role from a non-existent user should fail
assert_difference "UserRole.count", 0 do
post :revoke, :display_name => "non_existent_user", :role => role