Use tagged logger already configured on Rails

lib/dotenv/rails.rb

@@ -90,7 +90,8 @@ def self.load
 
     initializer "dotenv", after: :initialize_logger do |app|
       # Set up a new logger once Rails has initialized the logger and replay logs
-      new_logger = ActiveSupport::TaggedLogging.new(::Rails.logger).tagged("dotenv")
+      new_logger = ::Rails.logger
+      new_logger = new_logger.tagged("dotenv") if new_logger.respond_to?(:tagged)
       logger.replay new_logger if logger.respond_to?(:replay)
       self.logger = new_logger
     end

spec/dotenv/rails_spec.rb

@@ -31,6 +31,7 @@
   before do
     Rails.env = "test"
     Rails.application = nil
+    Rails.logger = nil
     Spring.watcher = Set.new # Responds to #add
 
     begin
@@ -89,6 +90,21 @@
   context "load" do
     subject { application.initialize! }
 
+    it "use the same rails logger object for simple loggers" do
+      subject
+      expect(application.config.dotenv.logger).to equal(::Rails.logger)
+    end
+
+    it "use a tag when rails is configured to use a tagged logger" do
+      application.config.logger = ActiveSupport::Logger.new(StringIO.new)
+        .tap { |logger| logger.formatter = ::Logger::Formatter.new }
+        .then { |logger| ActiveSupport::TaggedLogging.new(logger) }
+
+      expect(application.config.logger).to receive(:tagged).with("dotenv").and_call_original
+
+      subject
+    end
+
     it "watches .env with Spring" do
       subject
       expect(Spring.watcher).to include(fixture_path(".env").to_s)