Use ENV replica set name in test suite

Author: estolfo

spec/mongo/cluster_spec.rb

@@ -88,7 +88,7 @@
     context 'when the option is not provided' do
 
       let(:cluster) do
-        described_class.new([ '127.0.0.1:27017' ], TEST_OPTIONS)
+        described_class.new([ '127.0.0.1:27017' ], TEST_OPTIONS.dup.delete_if { |k| k == :replica_set })
       end
 
       it 'returns nil' do

spec/support/authorization.rb

@@ -36,9 +36,9 @@
 # The topology type.
 #
 # @since 2.0.0
-CONNECT = ENV['RS_ENABLED'] == 'true' ? :replica_set.freeze :
-            ENV['SHARDED_ENABLED'] == 'true' ? :sharded.freeze :
-            :direct.freeze
+CONNECT = ENV['RS_ENABLED'] == 'true' ? { connect: :replica_set, replica_set: ENV['RS_NAME'] } :
+          ENV['SHARDED_ENABLED'] == 'true' ? { connect: :sharded } :
+          { connect: :direct }
 
 # The write concern to use in the tests.
 #
@@ -53,10 +53,10 @@
 # Options for test suite clients.
 #
 # @since 2.0.3
-TEST_OPTIONS = { connect: CONNECT,
-                 max_pool_size: 1,
-                 write: WRITE_CONCERN,
-                 ssl: SSL }
+TEST_OPTIONS = CONNECT.merge(max_pool_size: 1,
+                             write: WRITE_CONCERN,
+                             ssl: SSL,
+                             server_selection_timeout: 3)
 
 # The root user name.
 #