Add commend and testing.

toomore · May 3, 2015 · 71db3c5 · 71db3c5
1 parent ad4b66b
commit 71db3c5
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diff --git a/utils/utils.go b/utils/utils.go
@@ -165,6 +165,7 @@ func CountCountineFloat64(data []float64) (int, bool) {
 	return counter, data[len(data)-1] > 0
 }
 
+// CalDiff 計算兩序列的差
 func CalDiff(listA, listB []float64) []float64 {
 	var length int
 	var result []float64

diff --git a/utils/utils_test.go b/utils/utils_test.go
@@ -193,3 +193,20 @@ func TestCountCountine(t *testing.T) {
 		t.Error("Should be `1 false`")
 	}
 }
+
+func TestCalDiff(t *testing.T) {
+	var sampleA = []float64{10.0, 11.1, 12.2, 13.3}
+	var sampleB = []float64{12.2, 11.1, 10.0}
+	var result = CalDiff(sampleA, sampleB)
+	if result[2] != float64(13.3)-float64(10.0) {
+		t.Error("Wrong cal.")
+	}
+}
+
+func BenchmarkCalDiff(b *testing.B) {
+	var sampleA = []float64{10.0, 11.1, 12.2, 13.3}
+	var sampleB = []float64{12.2, 11.1, 10.0}
+	for i := 0; i < b.N; i++ {
+		CalDiff(sampleA, sampleB)
+	}
+}