Enabled matches_regex for MySql

Previously matches_regex was only availble on PostgreSql, this will enable it for MySql

Usage example:

    users = User.arel_table;
    users = User.arel_table; User.where(users[:email].matches_regexp('(.*)\@gmail.com'))

Update activerecord/test/cases/arel/visitors/mysql_test.rb

Co-Authored-By: Ryuta Kamizono <kamipo@gmail.com>

1 files changed, 46 insertions, 0 deletions

diff --git a/activerecord/test/cases/arel/visitors/mysql_test.rb b/activerecord/test/cases/arel/visitors/mysql_test.rb
index 5f37587957..05dccd126e 100644
--- a/activerecord/test/cases/arel/visitors/mysql_test.rb
+++ b/activerecord/test/cases/arel/visitors/mysql_test.rb
@@ -104,6 +104,52 @@ module Arel
           sql.must_be_like %{ NOT "users"."name" <=> NULL }
         end
       end
+
+      describe "Nodes::Regexp" do
+        before do
+          @table = Table.new(:users)
+          @attr = @table[:id]
+        end
+
+        it "should know how to visit" do
+          node = @table[:name].matches_regexp("foo.*")
+          node.must_be_kind_of Nodes::Regexp
+          compile(node).must_be_like %{
+            "users"."name" REGEXP 'foo.*'
+          }
+        end
+
+        it "can handle subqueries" do
+          subquery = @table.project(:id).where(@table[:name].matches_regexp("foo.*"))
+          node = @attr.in subquery
+          compile(node).must_be_like %{
+            "users"."id" IN (SELECT id FROM "users" WHERE "users"."name" REGEXP 'foo.*')
+          }
+        end
+      end
+
+      describe "Nodes::NotRegexp" do
+        before do
+          @table = Table.new(:users)
+          @attr = @table[:id]
+        end
+
+        it "should know how to visit" do
+          node = @table[:name].does_not_match_regexp("foo.*")
+          node.must_be_kind_of Nodes::NotRegexp
+          compile(node).must_be_like %{
+            "users"."name" NOT REGEXP 'foo.*'
+          }
+        end
+
+        it "can handle subqueries" do
+          subquery = @table.project(:id).where(@table[:name].does_not_match_regexp("foo.*"))
+          node = @attr.in subquery
+          compile(node).must_be_like %{
+            "users"."id" IN (SELECT id FROM "users" WHERE "users"."name" NOT REGEXP 'foo.*')
+          }
+        end
+      end
     end
   end
 end