[rand] Remove method 'Int' + Code refactoring

CHANGELOG.md

@@ -3,6 +3,8 @@
 ### [13.3.2](https://kaos.sh/ek/13.3.2)
 
 - `[support/apps]` Added support for Docker, Podman, and LXC
+- `[rand]` Removed method `Int`
+- `[rand]` Code refactoring
 
 ### [13.3.1](https://kaos.sh/ek/13.3.1)
 

rand/rand.go

@@ -25,35 +25,29 @@ func String(length int) string {
 		return ""
 	}
 
+	rnd := rand.New(rand.NewSource(time.Now().UTC().UnixNano()))
 	symbolsLength := len(symbols)
 	result := make([]byte, length)
 
-	rand.Seed(time.Now().UTC().UnixNano())
-
 	for i := 0; i < length; i++ {
-		result[i] = symbols[rand.Intn(symbolsLength)]
+		result[i] = symbols[rnd.Intn(symbolsLength)]
 	}
 
 	return string(result)
 }
 
-// Int returns random int
-func Int(n int) int {
-	rand.Seed(time.Now().UTC().UnixNano())
-	return rand.Intn(n)
-}
-
 // Slice returns slice with random chars
 func Slice(length int) []string {
 	if length == 0 {
 		return []string{}
 	}
 
+	rnd := rand.New(rand.NewSource(time.Now().UTC().UnixNano()))
 	symbolsLength := len(symbols)
 	result := make([]string, length)
 
 	for i := 0; i < length; i++ {
-		result[i] = string(symbols[rand.Intn(symbolsLength)])
+		result[i] = string(symbols[rnd.Intn(symbolsLength)])
 	}
 
 	return result

rand/rand_test.go

@@ -33,17 +33,6 @@ func (s *RandSuite) TestString(c *C) {
 	c.Assert(len(String(-100)), Equals, 0)
 }
 
-func (s *RandSuite) TestInt(c *C) {
-	n := 1000
-	k := 0
-
-	for i := 0; i < 1000; i++ {
-		k += Int(n)
-	}
-
-	c.Assert(k/n, Not(Equals), n)
-}
-
 func (s *RandSuite) TestSlice(c *C) {
 	t1 := strings.Join(Slice(256), "")
 	t2 := strings.Join(Slice(256), "")