Fix ActiveRecord::Base.quote_bound_value for ActiveSupper::Multibyte::Chars values.

- Adds String#acts_like_string?
- Adds Chars#acts_like_string?

Signed-off-by: Michael Koziarski <michael@koziarski.com>
[#1029 state:committed]

activerecord/lib/active_record/base.rb

@@ -2152,7 +2152,7 @@ module ActiveRecord #:nodoc:
         end
 
         def quote_bound_value(value) #:nodoc:
-          if value.respond_to?(:map) && !value.is_a?(String)
+          if value.respond_to?(:map) && !value.acts_like?(:string)
             if value.respond_to?(:empty?) && value.empty?
               connection.quote(nil)
             else

activerecord/test/cases/finder_test.rb

@@ -297,7 +297,6 @@ class FinderTest < ActiveRecord::TestCase
     assert_raises(ActiveRecord::RecordNotFound) { Topic.find(1, :conditions => { :author_name => "David", :title => "The First Topic", :replies_count => 1, :approved => true }) }
   end
 
-
   def test_condition_interpolation
     assert_kind_of Firm, Company.find(:first, :conditions => ["name = '%s'", "37signals"])
     assert_nil Company.find(:first, :conditions => ["name = '%s'", "37signals!"])
@@ -392,7 +391,7 @@ class FinderTest < ActiveRecord::TestCase
       Company.find(:first, :conditions => ["id=? AND name = ?", 2])
     }
     assert_raises(ActiveRecord::PreparedStatementInvalid) {
-	   Company.find(:first, :conditions => ["id=?", 2, 3, 4])
+     Company.find(:first, :conditions => ["id=?", 2, 3, 4])
     }
   end
 
@@ -455,6 +454,15 @@ class FinderTest < ActiveRecord::TestCase
     assert_equal ActiveRecord::Base.connection.quote(''), bind('?', '')
   end
 
+  def test_bind_chars
+    quoted_bambi = ActiveRecord::Base.connection.quote("Bambi")
+    quoted_bambi_and_thumper = ActiveRecord::Base.connection.quote("Bambi\nand\nThumper")
+    assert_equal "name=#{quoted_bambi}", bind('name=?', "Bambi")
+    assert_equal "name=#{quoted_bambi_and_thumper}", bind('name=?', "Bambi\nand\nThumper")
+    assert_equal "name=#{quoted_bambi}", bind('name=?', "Bambi".chars)
+    assert_equal "name=#{quoted_bambi_and_thumper}", bind('name=?', "Bambi\nand\nThumper".chars)
+  end
+
   def test_bind_record
     o = Struct.new(:quoted_id).new(1)
     assert_equal '1', bind('?', o)

activerecord/test/cases/sanitize_test.rb

@@ -0,0 +1,25 @@
+require "cases/helper"
+require 'models/binary'
+
+class SanitizeTest < ActiveRecord::TestCase
+  def setup
+  end
+
+  def test_sanitize_sql_array_handles_string_interpolation
+    quoted_bambi = ActiveRecord::Base.connection.quote_string("Bambi")
+    assert_equal "name=#{quoted_bambi}", Binary.send(:sanitize_sql_array, ["name=%s", "Bambi"])
+    assert_equal "name=#{quoted_bambi}", Binary.send(:sanitize_sql_array, ["name=%s", "Bambi".chars])
+    quoted_bambi_and_thumper = ActiveRecord::Base.connection.quote_string("Bambi\nand\nThumper")
+    assert_equal "name=#{quoted_bambi_and_thumper}",Binary.send(:sanitize_sql_array, ["name=%s", "Bambi\nand\nThumper"])
+    assert_equal "name=#{quoted_bambi_and_thumper}",Binary.send(:sanitize_sql_array, ["name=%s", "Bambi\nand\nThumper".chars])
+  end
+
+  def test_sanitize_sql_array_handles_bind_variables
+    quoted_bambi = ActiveRecord::Base.connection.quote("Bambi")
+    assert_equal "name=#{quoted_bambi}", Binary.send(:sanitize_sql_array, ["name=?", "Bambi"])
+    assert_equal "name=#{quoted_bambi}", Binary.send(:sanitize_sql_array, ["name=?", "Bambi".chars])
+    quoted_bambi_and_thumper = ActiveRecord::Base.connection.quote("Bambi\nand\nThumper")
+    assert_equal "name=#{quoted_bambi_and_thumper}", Binary.send(:sanitize_sql_array, ["name=?", "Bambi\nand\nThumper"])
+    assert_equal "name=#{quoted_bambi_and_thumper}", Binary.send(:sanitize_sql_array, ["name=?", "Bambi\nand\nThumper".chars])
+  end
+end

activesupport/lib/active_support/core_ext/string.rb

@@ -6,6 +6,7 @@ require 'active_support/core_ext/string/iterators'
 require 'active_support/core_ext/string/unicode'
 require 'active_support/core_ext/string/xchar'
 require 'active_support/core_ext/string/filters'
+require 'active_support/core_ext/string/behavior'
 
 class String #:nodoc:
   include ActiveSupport::CoreExtensions::String::Access
@@ -15,4 +16,5 @@ class String #:nodoc:
   include ActiveSupport::CoreExtensions::String::StartsEndsWith
   include ActiveSupport::CoreExtensions::String::Iterators
   include ActiveSupport::CoreExtensions::String::Unicode
+  include ActiveSupport::CoreExtensions::String::Behavior
 end

activesupport/lib/active_support/core_ext/string/behavior.rb

@@ -0,0 +1,13 @@
+module ActiveSupport #:nodoc:
+  module CoreExtensions #:nodoc:
+    module String #:nodoc:
+      module Behavior
+        # Enable more predictable duck-typing on String-like classes. See
+        # Object#acts_like?.
+        def acts_like_string?
+          true
+        end
+      end
+    end
+  end
+end

activesupport/lib/active_support/multibyte/chars.rb

@@ -49,6 +49,11 @@ module ActiveSupport::Multibyte #:nodoc:
         false
     end
 
+    # Enable more predictable duck-typing on String-like classes. See Object#acts_like?.
+    def acts_like_string?
+      true
+    end
+
     # Create a new Chars instance.
     def initialize(str)
       @string = str.respond_to?(:string) ? str.string : str

activesupport/test/core_ext/string_ext_test.rb

@@ -201,3 +201,9 @@ class StringInflectionsTest < Test::Unit::TestCase
     end
   end
 end
+
+class StringBehaviourTest < Test::Unit::TestCase
+  def test_acts_like_string
+    assert 'Bambi'.acts_like_string?
+  end
+end

activesupport/test/multibyte_chars_test.rb

@@ -167,6 +167,10 @@ class CharsTest < Test::Unit::TestCase
     assert_equal false, 'test'.chars.respond_to?(:a_method_that_doesnt_exist)
   end
   
+  def test_acts_like_string
+    assert 'Bambi'.chars.acts_like_string?
+  end
+
   protected
 
   def with_kcode(kcode)