Fix DB Console tests

The build is broken: https://travis-ci.org/rails/rails/builds/15824530

This commit fixes it.

The problem: Sqlite expects the `database` part to be an absolute path. That prompted this change to be committed to master: fbb79b517f

This change provides correct behavior. Unfortunately tests were introduced in 971d5107cd that were relying on the incorrect behavior. We can avoid the fix by changing to another database url such as `mysql` or `postgresql`

In addition to fixing the failure, the assertions are changed so that the "expected" value comes before "actual" value.

railties/test/commands/dbconsole_test.rb

@@ -38,36 +38,38 @@ class Rails::DBConsoleTest < ActiveSupport::TestCase
   end
 
   def test_config_with_database_url_only
-    ENV['DATABASE_URL'] = 'sqlite3://foo:bar@localhost:9000/foo_test?pool=5&timeout=3000'
+    ENV['DATABASE_URL'] = 'postgresql://foo:bar@localhost:9000/foo_test?pool=5&timeout=3000'
     app_db_config(nil)
-    assert_equal Rails::DBConsole.new.config.sort, {
-      "adapter"=> "sqlite3",
-      "host"=> "localhost",
-      "port"=> 9000,
-      "database"=> "foo_test",
-      "username"=> "foo",
-      "password"=> "bar",
-      "pool"=> "5",
-      "timeout"=> "3000"
+    expected = {
+      "adapter"  => "postgresql",
+      "host"     => "localhost",
+      "port"     => 9000,
+      "database" => "foo_test",
+      "username" => "foo",
+      "password" => "bar",
+      "pool"     => "5",
+      "timeout"  => "3000"
     }.sort
+    assert_equal expected, Rails::DBConsole.new.config.sort
   end
 
   def test_config_choose_database_url_if_exists
-    ENV['DATABASE_URL'] = 'sqlite3://foo:bar@dburl:9000/foo_test?pool=5&timeout=3000'
+    host = "database-url-host.com"
+    ENV['DATABASE_URL'] = "postgresql://foo:bar@#{host}:9000/foo_test?pool=5&timeout=3000"
     sample_config = {
       "test" => {
-        "adapter"=> "sqlite3",
-        "host"=> "localhost",
-        "port"=> 9000,
-        "database"=> "foo_test",
-        "username"=> "foo",
-        "password"=> "bar",
-        "pool"=> "5",
-        "timeout"=> "3000"
+        "adapter"  => "postgresql",
+        "host"     => "not-the-#{host}",
+        "port"     => 9000,
+        "database" => "foo_test",
+        "username" => "foo",
+        "password" => "bar",
+        "pool"     => "5",
+        "timeout"  => "3000"
       }
     }
     app_db_config(sample_config)
-    assert_equal Rails::DBConsole.new.config["host"], "dburl"
+    assert_equal host, Rails::DBConsole.new.config["host"]
   end
 
   def test_env