Add connection configuration to the blacklight config

lib/blacklight/abstract_repository.rb

@@ -19,7 +19,7 @@ def connection
 
     protected
       def connection_config
-        @connection_config ||= Blacklight.connection_config
+        blacklight_config.connection_config
       end
 
       def logger

lib/blacklight/configuration.rb

@@ -76,6 +76,8 @@ def default_values
           document_model: nil,
           # document presenter class used by helpers and views
           document_presenter_class: nil,
+          # repository connection configuration
+          connection_config: nil,
           ##
           # == Blacklight view configuration
           ##
@@ -211,6 +213,10 @@ def repository_class
       super || Blacklight::SolrRepository
     end
 
+    def connection_config
+      super || Blacklight.connection_config
+    end
+
     def search_builder_class
       super || locate_search_builder_class
     end

spec/lib/blacklight/configuration_spec.rb

@@ -48,6 +48,18 @@
       expect(@config.search_fields).to be_a_kind_of ActiveSupport::OrderedHash
       expect(@config.sort_fields).to be_a_kind_of ActiveSupport::OrderedHash
     end
+
+  end
+
+  describe "#connection_config" do
+    let(:custom_config) { double }
+    it "should have the global blacklight configuration" do
+      expect(@config.connection_config).to eq Blacklight.connection_config
+    end
+    it "should be overridable with custom configuration" do
+      @config.connection_config = custom_config
+      expect(@config.connection_config).to eq custom_config
+    end
   end
 
   describe "config.index.respond_to" do