:sparkles: (Go) trimming and spliting string in Repeat function

- added test in case string is a word
- added test in case string has space

Go/iteration/repeat.go

···
 package iteration
 
+import "strings"
+
 func Repeat(char string, numberTimes int) string {
+    trimmed := strings.Trim(char, " ")
+    firstChar := strings.Split(trimmed, "")
+
     var repeated string
 
     for i := 0; i < numberTimes; i++ {
-        repeated += char
+        repeated += firstChar[0]
     }
 
     return repeated

Go/iteration/repeat_test.go

···
             t.Errorf("expected %q but got %q", expected, repeated)
         }
     })
+
+    t.Run("should only repeat the first character of a string", func(t *testing.T) {
+        repeated := Repeat("first", 5)
+        expected := "fffff"
+
+        if repeated != expected {
+            t.Errorf("expected %q but got %q", expected, repeated)
+        }
+    })
+
+    t.Run("should trims string", func(t *testing.T) {
+        repeated := Repeat("  spaaaace  ", 2)
+        expected := "ss"
+
+        if repeated != expected {
+            t.Errorf("expected %q but got %q", expected, repeated)
+        }
+    })
 }
 
 func BenchmarkRepeat(b *testing.B) {