From 78387b0284b18eb39a959086954352dcf97e543c Mon Sep 17 00:00:00 2001
From: "Stephen McQuay (smcquay)" <stephen@mcquay.me>
Date: Sun, 31 Jul 2016 22:41:04 -0700
Subject: [PATCH] added coverage

---
 ostat_test.go | 28 +++++++++++++++++++++++++++-
 1 file changed, 27 insertions(+), 1 deletion(-)

diff --git a/ostat_test.go b/ostat_test.go
index 9d5defc..2c98d3e 100644
--- a/ostat_test.go
+++ b/ostat_test.go
@@ -282,7 +282,6 @@ func TestString(t *testing.T) {
 	}
 }
 
-
 func TestJson(t *testing.T) {
 	ps := NewPopulationStat()
 	for _, v := range []float64{1, 1, 2, 2} {
@@ -297,3 +296,30 @@ func TestJson(t *testing.T) {
 		t.Fatalf("wrong json encoding; got %q, want %q", got, want)
 	}
 }
+
+func TestN(t *testing.T) {
+	ps := NewPopulationStat()
+	for _, v := range []float64{1, 1, 2, 2} {
+		ps.Push(v)
+	}
+	if got, want := ps.N(), uint64(4); got != want {
+		t.Fatalf("unexpected number of values in ps: got %v, want %v", got, want)
+	}
+}
+
+func TestCI(t *testing.T) {
+	ps := NewPopulationStat()
+	for _, v := range []float64{1, 1, 2, 2} {
+		ps.Push(v)
+	}
+	cil, cir := ps.CI()
+	wantl, wantr := float64(1.01001), float64(1.98999)
+
+	if got, want := cil, wantl; got != want {
+		t.Errorf("unexpected lower confidence interval; got %v, want %v", got, want)
+	}
+
+	if got, want := cir, wantr; got != want {
+		t.Errorf("unexpected upper confidence interval; got %v, want %v", got, want)
+	}
+}