Add index length support for MySQL [#1852 state:resolved]

Example:

  add_index(:accounts, :name, :name => 'by_name', :length => 10)
  => CREATE INDEX by_name ON accounts(name(10))

  add_index(:accounts, [:name, :surname], :name => 'by_name_surname', :length => {:name => 10, :surname => 15})
  => CREATE INDEX by_name_surname ON accounts(name(10), surname(15))

Signed-off-by: Pratik Naik <pratiknaik@gmail.com>

1 files changed, 17 insertions, 0 deletions

diff --git a/activerecord/test/cases/active_schema_test_mysql.rb b/activerecord/test/cases/active_schema_test_mysql.rb
index 9aff538ce9..f4d123be15 100644
--- a/activerecord/test/cases/active_schema_test_mysql.rb
+++ b/activerecord/test/cases/active_schema_test_mysql.rb
@@ -15,6 +15,23 @@ class ActiveSchemaTest < ActiveRecord::TestCase
     end
   end
 
+  def test_add_index
+    expected = "CREATE  INDEX `index_people_on_last_name` ON `people` (`last_name`)"
+    assert_equal expected, add_index(:people, :last_name, :length => nil)
+
+    expected = "CREATE  INDEX `index_people_on_last_name` ON `people` (`last_name`(10))"
+    assert_equal expected, add_index(:people, :last_name, :length => 10)
+
+    expected = "CREATE  INDEX `index_people_on_last_name_and_first_name` ON `people` (`last_name`(15), `first_name`(15))"
+    assert_equal expected, add_index(:people, [:last_name, :first_name], :length => 15)
+
+    expected = "CREATE  INDEX `index_people_on_last_name_and_first_name` ON `people` (`last_name`(15), `first_name`)"
+    assert_equal expected, add_index(:people, [:last_name, :first_name], :length => {:last_name => 15})
+
+    expected = "CREATE  INDEX `index_people_on_last_name_and_first_name` ON `people` (`last_name`(15), `first_name`(10))"
+    assert_equal expected, add_index(:people, [:last_name, :first_name], :length => {:last_name => 15, :first_name => 10})
+  end
+
   def test_drop_table
     assert_equal "DROP TABLE `people`", drop_table(:people)
   end