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Adding SqlLiteral with spec for counts

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1 parent 976fb01 commit 86364591af807ed3fa4a7304f53e6f3458cb4961 @brynary brynary committed May 20, 2009
Showing with 33 additions and 0 deletions.
  1. +10 −0 lib/arel/engines/sql/primitives.rb
  2. +23 −0 spec/arel/engines/sql/unit/primitives/literal_spec.rb
@@ -1,4 +1,14 @@
module Arel
+ class SqlLiteral < String
+ def relation
+ nil
+ end
+
+ def to_sql(formatter = nil)
+ self
+ end
+ end
+
class Attribute
def column
original_relation.column_for(self)
@@ -0,0 +1,23 @@
+require File.join(File.dirname(__FILE__), '..', '..', '..', '..', '..', 'spec_helper')
+
+module Arel
+ describe SqlLiteral do
+ before do
+ @relation = Table.new(:users)
+ end
+
+ describe '#to_sql' do
+ it "manufactures sql with a literal SQL fragment" do
+ sql = @relation.project(Count.new(SqlLiteral.new("*"))).to_sql
+
+ adapter_is :mysql do
+ sql.should be_like(%Q{SELECT COUNT(*) AS count_id FROM `users`})
+ end
+
+ adapter_is_not :mysql do
+ sql.should be_like(%Q{SELECT COUNT(*) AS count_id FROM "users"})
+ end
+ end
+ end
+ end
+end

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