feat: add unit test

randomizer/rand.go

@@ -1,6 +1,9 @@
 package randomizer
 
-import "math/rand"
+import (
+	"fmt"
+	"math/rand"
+)
 
 type Random interface {
 	Int() int
@@ -25,8 +28,13 @@ func Rand(rand int) int {
 	return randGen(rand)
 }
 func realRand(n int) int { return int(rand.Intn(n)) }
-func fakeRand(n int) func(_ int) int {
-	return func(_ int)int { return n}
+func fakeRand(n int) func(numb int) int {
+	return func(numb int)int {
+		if n >= numb {
+			panic(fmt.Sprintf("%d Should not be superior of %d",n,numb))
+		}
+		return n
+}
 }
 var randGen = NewRandomizer(realRand).Int