[benchmark] Use header in CSV log

Since the meaning of some columns was changed, but their overall number remained, let’s include the header in the CSV log to make it clear that we are now reporting MIN, Q1, MEDIAN, Q3, MAX, MAX_RSS, instead of the old MIN, MAX, MEAN, SD, MEDIAN, MAX_RSS format.

Author: palimondo

benchmark/scripts/Benchmark_Driver

@@ -206,15 +206,15 @@ class BenchmarkDriver(object):
         def console_log(values):
             print(format(values))
 
-        console_log(['#', 'TEST', 'SAMPLES', 'MIN(μs)', 'Q1(μs)',  # header
-                     'MEDIAN(μs)', 'Q3(μs)', 'MAX(μs)', 'MAX_RSS(B)'])
-
         def result_values(r):
             return map(str, [r.test_num, r.name, r.num_samples, r.min,
                              r.samples.q1, r.median, r.samples.q3, r.max,
                              r.max_rss])
 
-        results = []
+        header = ['#', 'TEST', 'SAMPLES', 'MIN(μs)', 'Q1(μs)', 'MEDIAN(μs)',
+                  'Q3(μs)', 'MAX(μs)', 'MAX_RSS(B)']
+        console_log(header)
+        results = [header]
         for test in self.tests:
             result = result_values(self.run_independent_samples(test))
             console_log(result)

benchmark/scripts/test_Benchmark_Driver.py

@@ -306,20 +306,21 @@ def mock_run(test):
         with captured_output() as (out, _):
             log = driver.run_and_log()
 
+        header = '#,TEST,SAMPLES,MIN(μs),Q1(μs),MEDIAN(μs),Q3(μs),MAX(μs),' +\
+            'MAX_RSS(B)\n'
         csv_log = '3,b1,5,101,102,103,104,105,888\n'
         self.assertEquals(log, None)
         self.assertEquals(
             out.getvalue(),
-            '#,TEST,SAMPLES,MIN(μs),Q1(μs),MEDIAN(μs),Q3(μs),MAX(μs),' +
-            'MAX_RSS(B)\n' +
+            header +
             csv_log +
             '\n' +
             'Total performance tests executed: 1\n')
 
         with captured_output() as (out, _):
             log = driver.run_and_log(csv_console=False)
 
-        self.assertEquals(log, csv_log)
+        self.assertEquals(log, header + csv_log)
         self.assertEquals(
             out.getvalue(),
             '  # TEST                      SAMPLES MIN(μs) Q1(μs)' +