cleanup and improve tests of utils package

utils/minmax.go

@@ -0,0 +1,67 @@
+package utils
+
+import "time"
+
+// Max returns the maximum of two Ints
+func Max(a, b int) int {
+	if a < b {
+		return b
+	}
+	return a
+}
+
+// MaxUint32 returns the maximum of two uint32
+func MaxUint32(a, b uint32) uint32 {
+	if a < b {
+		return b
+	}
+	return a
+}
+
+// MaxUint64 returns the maximum of two uint64
+func MaxUint64(a, b uint64) uint64 {
+	if a < b {
+		return b
+	}
+	return a
+}
+
+// Min returns the minimum of two Ints
+func Min(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+// MinInt64 returns the minimum of two int64
+func MinInt64(a, b int64) int64 {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+// MaxInt64 returns the minimum of two int64
+func MaxInt64(a, b int64) int64 {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+// MaxDuration returns the max duration
+func MaxDuration(a, b time.Duration) time.Duration {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+// AbsDuration returns the absolute value of a time duration
+func AbsDuration(d time.Duration) time.Duration {
+	if d >= 0 {
+		return d
+	}
+	return -d
+}