Implement MultiLogger#level=

Author: mrkn

lib/iruby/logger.rb

@@ -6,10 +6,21 @@ class << self
   end
 
   class MultiLogger < BasicObject
+    def initialize(*loggers, level: ::Logger::DEBUG)
+      @loggers = loggers
+      @level = level
+    end
+
     attr_reader :loggers
 
-    def initialize(*loggers)
-      @loggers = loggers
+    attr_reader :level
+
+    def level=(new_level)
+      p :ahi
+      @loggers.each do |l|
+        l.level = new_level
+      end
+      @level = new_level
     end
 
     def method_missing(name, *args, &b)

test/iruby/multi_logger_test.rb

@@ -8,4 +8,17 @@ def test_multilogger
     assert_match 'bad thing', out.string
     assert_match 'bad thing', err.string
   end
+
+  def test_level
+    out, err = StringIO.new, StringIO.new
+    logger = IRuby::MultiLogger.new(Logger.new(out), Logger.new(err))
+
+    logger.level = Logger::DEBUG
+    assert_equal Logger::DEBUG, logger.level
+    assert_all(logger.loggers) {|l| l.level == Logger::DEBUG }
+
+    logger.level = Logger::INFO
+    assert_equal Logger::INFO, logger.level
+    assert_all(logger.loggers) {|l| l.level == Logger::INFO }
+  end
 end