Dump collations into schema.rb before the table definitions

README.md

@@ -51,5 +51,7 @@ Run tests in this repository with `rake`. Migrations are exercised by running th
 
 ```
 cd test/dummy
-rm -f db/schema.rb && RAILS_ENV=test rake db:drop db:create db:migrate
+rm -f db/schema.rb && RAILS_ENV=test bundle exec rake db:drop db:create db:migrate
+cd ../../
+bundle exec rake
 ```

lib/active_record/collation/schema_dumper.rb

@@ -10,15 +10,15 @@ def collations(stream)
         collations = @connection.collations
         return unless collations.any?
 
-        stream.puts
         collations.each do |row|
           stream.puts(
             "  create_collation(#{row['collname'].inspect}, #{row['colllocale'].inspect})"
           )
         end
+        stream.puts
       end
 
-      def trailer(stream)
+      def tables(stream)
         collations(stream)
         super
       end

test/dummy/db/schema.rb

@@ -14,10 +14,10 @@
   # These are extensions that must be enabled in order to support this database
   enable_extension "pg_catalog.plpgsql"
 
+  create_collation("natural_de", "de-u-ka-shifted-kn-ks-level1-kv-symbol")
+  create_collation("natural_en", "en-u-ka-shifted-kn-ks-level1-kv-symbol")
+
   create_table "clients", force: :cascade do |t|
     t.text "name", null: false
   end
-
-  create_collation("natural_de", "de-u-ka-shifted-kn-ks-level1-kv-symbol")
-  create_collation("natural_en", "en-u-ka-shifted-kn-ks-level1-kv-symbol")
 end