Backout broken attempt at making case insensitive authentication work

on Postgres. As implemented this forces a table scan to authenticate
users which is ridiculous to save people pressing the shift key.

app/models/user.rb

@@ -42,13 +42,7 @@ class User < ActiveRecord::Base
 
   def self.authenticate(options)
     if options[:username] and options[:password]
-      environment = Rails.configuration.environment
-      adapter = Rails.configuration.database_configuration[environment]["adapter"]
-      if adapter == "postgresql"
-        user = find(:first, :conditions => ["email ILIKE ? OR display_name ILIKE ?", options[:username], options[:username]])
-      else
-        user = find(:first, :conditions => ["email = ? OR display_name = ?", options[:username], options[:username]])
-      end
+      user = find(:first, :conditions => ["email = ? OR display_name = ?", options[:username], options[:username]])
       user = nil if user and user.pass_crypt != OSM::encrypt_password(options[:password], user.pass_salt)
     elsif options[:token]
       token = UserToken.find(:first, :include => :user, :conditions => ["user_tokens.token = ?", options[:token]])

test/fixtures/users.yml

@@ -1,9 +1,7 @@
 # Read about fixtures at http://ar.rubyonrails.org/classes/Fixtures.html
-# The normal user's email is intentionally capitalised that way to 
-# check that the login is case insensitive
 normal_user:
   id: 1
-  email: test@OpenStreetMap.org
+  email: test@openstreetmap.org
   active: true
   pass_crypt: <%= Digest::MD5.hexdigest('test') %>
   creation_time: "2007-01-01 00:00:00"

test/functional/user_controller_test.rb

@@ -7,7 +7,6 @@ class UserControllerTest < ActionController::TestCase
   def test_user_create
     get :new
     assert_response :success
-    assert_template 'new'
     
     assert_select "html:root", :count => 1 do
       assert_select "head", :count => 1 do
@@ -42,45 +41,8 @@ class UserControllerTest < ActionController::TestCase
     get :api_details
     assert_response :unauthorized
     
-    # Private users can login and get the api details
-    usr = users(:normal_user)
-    basic_authorization(usr.email, "test")
+    basic_authorization(users(:normal_user).email, "test")
     get :api_details
     assert_response :success
-    # Now check the content of the XML returned
-    print @response.body
-    assert_select "osm:root[version=#{API_VERSION}][generator='#{GENERATOR}']", :count => 1 do
-      assert_select "user[display_name='#{usr.display_name}'][account_created='#{usr.creation_time.xmlschema}']", :count => 1 do
-      assert_select "home[lat='#{usr.home_lat}'][lon='#{usr.home_lon}'][zoom='#{usr.home_zoom}']", :count => 1
-      end
-    end
-    
-  end
-  
-  # Check that we can login through the web using the mixed case fixture,
-  # lower case and upper case
-  def test_user_login_web_case
-    login_web_case_ok users(:normal_user).email,  "test"
-    login_web_case_ok users(:normal_user).email.upcase, "test"
-    login_web_case_ok users(:normal_user).email.downcase, "test"
-  end
-
-  def login_web_case_ok(userstring, password)
-    post :login, :user => {:email => userstring, :password => password}
-    assert_redirected_to :controller => 'site', :action => 'index'
-  end
-
-  # Check that we can login to the api, and get the user details 
-  # using the mixed case fixture, lower case and upper case  
-  def test_user_login_api_case
-    login_api_case_ok users(:normal_user).email, "test"
-    login_api_case_ok users(:normal_user).email.upcase, "test"
-    login_api_case_ok users(:normal_user).email.downcase, "test"
-  end
-  
-  def login_api_case_ok(userstring, password)
-    basic_authorization(userstring, password)
-    get :api_details
-    assert :success
   end
 end