tests: add locker and math tests

pkg/math/math.go

@@ -22,15 +22,19 @@ func Abs[T signed](i T) T {
 	}
 	return -i
 }
-func Max[T ordered](i, j T) T {
-	if i > j {
-		return i
+func Max[T ordered](i T, candidates ...T) T {
+	for _, j := range candidates {
+		if i < j {
+			i = j
+		}
 	}
-	return j
+	return i
 }
-func Min[T ordered](i, j T) T {
-	if i < j {
-		return i
+func Min[T ordered](i T, candidates ...T) T {
+	for _, j := range candidates {
+		if i > j {
+			i = j
+		}
 	}
-	return j
+	return i
 }

pkg/math/math_test.go

@@ -0,0 +1,48 @@
+package math_test
+
+import (
+	"testing"
+
+	"github.com/matryer/is"
+	"github.com/sour-is/ev/pkg/math"
+)
+
+func TestMath(t *testing.T) {
+	is := is.New(t)
+
+	is.Equal(5, math.Abs(-5))
+	is.Equal(math.Abs(5), math.Abs(-5))
+
+	is.Equal(10, math.Max(1, 2, 3, 4, 5, 6, 7, 8, 9, 10))
+	is.Equal(1, math.Min(1, 2, 3, 4, 5, 6, 7, 8, 9, 10))
+
+	is.Equal(1, math.Min(89, 71, 54, 48, 49, 1, 72, 88, 25, 69))
+	is.Equal(89, math.Max(89, 71, 54, 48, 49, 1, 72, 88, 25, 69))
+
+	is.Equal(0.9348207729, math.Max(
+		0.3943310720,
+		0.1090868377,
+		0.9348207729,
+		0.3525527584,
+		0.4359833682,
+		0.7958538081,
+		0.1439352569,
+		0.1547311967,
+		0.6403818871,
+		0.8618832818,
+	))
+
+	is.Equal(0.1090868377, math.Min(
+		0.3943310720,
+		0.1090868377,
+		0.9348207729,
+		0.3525527584,
+		0.4359833682,
+		0.7958538081,
+		0.1439352569,
+		0.1547311967,
+		0.6403818871,
+		0.8618832818,
+	))
+
+}