test: add tests for "elapsed" specified "--order" option of Analyzer#run

test/fixtures/order/-elapsed.expected

@@ -0,0 +1,28 @@
+Summary:
+  Threshold:
+    slow response     : 0.2
+    slow operation    : 0.1
+  # of responses      : 2
+  # of slow responses : 0
+  responses/sec       : 387.0613143828114
+  start time          : 2012-12-12 17:39:17.3
+  last time           : 2012-12-12 17:39:17.3
+  period(sec)         : 0.00516714
+  slow response ratio : 0.000%
+  total response time : 0.004345996
+  Slow Operations:
+
+Slow Queries:
+1) [2012-12-12 17:39:17.3-2012-12-12 17:39:17.3 (0.00312886)](0): load --table Video  name: <load>
+  parameters:
+    <table>: <Video>
+
+2) [2012-12-12 17:39:17.3-2012-12-12 17:39:17.3 (0.00121714)](0): select --table Users --query follower:@groonga --output_columns _key,name  name: <select>
+  parameters:
+    <table>: <Users>
+    <query>: <follower:@groonga>
+    <output_columns>: <_key,name>
+  1) 0.00084295:     filter(     2) query: follower:@groonga
+  2) 0.00002795:     select(     2)
+  3) 0.00019585:     output(     2) _key,name
+

test/fixtures/order/elapsed.expected

@@ -0,0 +1,28 @@
+Summary:
+  Threshold:
+    slow response     : 0.2
+    slow operation    : 0.1
+  # of responses      : 2
+  # of slow responses : 0
+  responses/sec       : 387.0613143828114
+  start time          : 2012-12-12 17:39:17.3
+  last time           : 2012-12-12 17:39:17.3
+  period(sec)         : 0.00516714
+  slow response ratio : 0.000%
+  total response time : 0.004345996
+  Slow Operations:
+
+Slow Queries:
+1) [2012-12-12 17:39:17.3-2012-12-12 17:39:17.3 (0.00121714)](0): select --table Users --query follower:@groonga --output_columns _key,name  name: <select>
+  parameters:
+    <table>: <Users>
+    <query>: <follower:@groonga>
+    <output_columns>: <_key,name>
+  1) 0.00084295:     filter(     2) query: follower:@groonga
+  2) 0.00002795:     select(     2)
+  3) 0.00019585:     output(     2) _key,name
+
+2) [2012-12-12 17:39:17.3-2012-12-12 17:39:17.3 (0.00312886)](0): load --table Video  name: <load>
+  parameters:
+    <table>: <Video>
+

test/test-analyzer.rb

@@ -46,7 +46,8 @@ def test_n_entries
     assert_equal(expected_result, actual_result)
   end
 
-  data(:desc_elapsed => "-elapsed", :desc_start_time => "-start-time")
+  data(:asc_elapsed => "elapsed", :asc_start_time => "start-time",
+         :desc_elapsed => "-elapsed", :desc_start_time => "-start-time")
   def test_order(order)
     actual_result = run_analyzer("--order=#{order}", @query_log_path)