Add tests to verify percentile counts.

test/process_metrics_tests.js

@@ -90,12 +90,13 @@ module.exports = {
     test.done();
   },
     timers_single_time_multiple_percentiles: function(test) {
-    test.expect(6);
+    test.expect(7);
     this.metrics.timers['a'] = [100];
     this.metrics.timer_counters['a'] = 1;
     this.metrics.pctThreshold = [90, 80];
     pm.process_metrics(this.metrics, 100, this.time_stamp, function(){});
     timer_data = this.metrics.timer_data['a'];
+    test.equal(1, timer_data.count_90);
     test.equal(100, timer_data.mean_90);
     test.equal(100, timer_data.upper_90);
     test.equal(100, timer_data.sum_90);
@@ -105,27 +106,32 @@ module.exports = {
     test.done();
   },
     timers_multiple_times_single_percentiles: function(test) {
-    test.expect(3);
+    test.expect(4);
     this.metrics.timers['a'] = [100, 200, 300];
     this.metrics.timer_counters['a'] = 3;
     this.metrics.pctThreshold = [90];
     pm.process_metrics(this.metrics, 100, this.time_stamp, function(){});
     timer_data = this.metrics.timer_data['a'];
+    test.equal(3, timer_data.count_90);
     test.equal(200, timer_data.mean_90);
     test.equal(300, timer_data.upper_90);
     test.equal(600, timer_data.sum_90);
     test.done();
   },
     timers_multiple_times_multiple_percentiles: function(test) {
-    test.expect(6);
+    test.expect(9);
     this.metrics.timers['a'] = [100, 200, 300];
     this.metrics.timer_counters['a'] = 3;
     this.metrics.pctThreshold = [90, 80];
     pm.process_metrics(this.metrics, 100, this.time_stamp, function(){});
     timer_data = this.metrics.timer_data['a'];
+    test.equal(3, timer_data.count);
+    test.equal(3, timer_data.count_90);
     test.equal(200, timer_data.mean_90);
     test.equal(300, timer_data.upper_90);
     test.equal(600, timer_data.sum_90);
+
+    test.equal(2, timer_data.count_80);
     test.equal(150, timer_data.mean_80);
     test.equal(200, timer_data.upper_80);
     test.equal(300, timer_data.sum_80);