log test

test/lib/test_all.rb

@@ -0,0 +1 @@
+require_relative "log_test"

test/lib/test_log.rb

@@ -0,0 +1,34 @@
+require_relative '../helper'
+
+class MemLogger
+  def self.stream
+    @stream
+  end
+  def self.log_stream
+    @stream = StringIO.new
+  end
+  include Logging
+end
+
+class LoggerTest < MiniTest::Test
+
+  def setup
+    @logger = MemLogger.new
+  end
+
+  def test_debug
+    assert @logger.log.debug "Debug"
+  end
+  def test_info
+    assert @logger.log.info "Info"
+    assert MemLogger.stream.string.include? "Info"
+  end
+  def test_warn
+    assert @logger.log.warn "Warn"
+    assert MemLogger.stream.string.include? "Warn"
+  end
+  def test_error
+    assert @logger.log.error "Error"
+    assert MemLogger.stream.string.include? "Error"
+  end
+end