Re-add support for attribute ranges

This is an alternative implementation of #37 .
It doesn't need additional configuration, but enables range retrieval automatic.
It also add some testing.

Fixes #32

test/fixtures/ldapdb.yaml

@@ -2,6 +2,9 @@
 dc=example,dc=com:
   cn:
   - Top object
+cn=Unknown Flintstone,dc=example,dc=com:
+  cn:
+  - Unknown Flintstone
 cn=Fred Flintstone,dc=example,dc=com:
   cn:
   - Fred Flintstone
@@ -36,3 +39,4 @@ cn=All Users,dc=example,dc=com:
   member:
   - cn=Wilmas,dc=example,dc=com
   - cn=Fred Flintstone,dc=example,dc=com
+  - cn=Unknown Flintstone,dc=example,dc=com

test/ldap_server.rb

@@ -17,11 +17,10 @@ class HashOperation < LDAP::Server::Operation
 
   def search(basedn, scope, deref, filter)
     basedn.downcase!
-
     case scope
     when LDAP::Server::BaseObject
       # client asked for single object by DN
-      obj = @hash[basedn]
+      obj = @hash.transform_keys(&:downcase)[basedn]
       raise LDAP::ResultError::NoSuchObject unless obj
       send_SearchResultEntry(basedn, obj) if LDAP::Server::Filter.run(filter, obj)
 

test/test_pg_ldap_sync.rb

@@ -41,7 +41,8 @@ class TestPgLdapSync < Minitest::Test
     # :ssl_cert_file    => "cert.pem",
     # :ssl_on_connect   => true,
       :operation_class  => HashOperation,
-      :operation_args   => @directory
+      :operation_args   => @directory,
+      :attribute_range_limit => 2
     )
     @ldap_server.run_tcpserver
   end
@@ -122,7 +123,7 @@ class TestPgLdapSync < Minitest::Test
   end
 
   def sync_with_config(config="config-ldapdb")
-    PgLdapSync::Application.run(["-c", "test/fixtures/#{config}.yaml"] + ($DEBUG ? ["-vv"] : ["--no-verbose"]))
+    PgLdapSync::Application.run(["-c", "test/fixtures/#{config}.yaml"] + ($DEBUG ? ["-vvv"] : ["--no-verbose"]))
   end
 
   def sync_to_fixture(fixture: "ldapdb", config: "config-ldapdb")