1 files changed, 72 insertions, 0 deletions
diff --git a/actionpack/test/template/benchmark_helper_test.rb b/actionpack/test/template/benchmark_helper_test.rb
new file mode 100644
index 0000000000..3c7d9b566e
--- /dev/null
+++ b/actionpack/test/template/benchmark_helper_test.rb
@@ -0,0 +1,72 @@
+require 'test/unit'
+require File.dirname(__FILE__) + '/../../lib/action_view/helpers/benchmark_helper'
+
+class BenchmarkHelperTest < Test::Unit::TestCase
+  include ActionView::Helpers::BenchmarkHelper
+
+  class MockLogger
+    attr_reader :logged
+
+    def initialize
+      @logged = []
+    end
+
+    def method_missing(method, *args)
+      @logged << [method, args]
+    end
+  end
+
+  def setup
+    @logger = MockLogger.new
+  end
+
+  def test_without_logger_or_block
+    @logger = nil
+    assert_nothing_raised { benchmark }
+  end
+
+  def test_without_block
+    assert_raise(LocalJumpError) { benchmark }
+    assert @logger.logged.empty?
+  end
+
+  def test_without_logger
+    @logger = nil
+    i_was_run = false
+    benchmark { i_was_run = true }
+    assert !i_was_run
+  end
+
+  def test_defaults
+    i_was_run = false
+    benchmark { i_was_run = true }
+    assert i_was_run
+    assert 1, @logger.logged.size
+    assert_last_logged
+  end
+
+  def test_with_message
+    i_was_run = false
+    benchmark('test_run') { i_was_run = true }
+    assert i_was_run
+    assert 1, @logger.logged.size
+    assert_last_logged 'test_run'
+  end
+
+  def test_with_message_and_level
+    i_was_run = false
+    benchmark('debug_run', :debug) { i_was_run = true }
+    assert i_was_run
+    assert 1, @logger.logged.size
+    assert_last_logged 'debug_run', :debug
+  end
+
+  private
+    def assert_last_logged(message = 'Benchmarking', level = :info)
+      last = @logger.logged.last
+      assert 2, last.size
+      assert_equal level, last.first
+      assert 1, last[1].size
+      assert last[1][0] =~ /^#{message} \(.*\)$/
+    end
+end