Function to check if a string is a palindrome

pal.go

/* Palindrome

recognizes palindromes composed of unicode characters.

*/

package palindrome

import "unicode/utf8"

func IsPalindrome(s string) bool {
        // implementation here
        if Reverse(s) == s {
                return true
        } else {
                return false
        }
}

// Super Fast UTF-8 compatible string reverse function from
// https://stackoverflow.com/questions/1752414/how-to-reverse-a-string-in-go/20225618#20225618
func Reverse(s string) string {
        size := len(s)
        buf := make([]byte, size)
        for start := 0; start < size; {
                r, n := utf8.DecodeRuneInString(s[start:])
                start += n
                utf8.EncodeRune(buf[size-start:], r)
        }
        return string(buf)
}

pal_test.go

package palindrome

import "testing"

func TestPal(t *testing.T) {
        checkTrue(IsPalindrome("ABBA"), t)
        checkTrue(IsPalindrome("X"), t)
        checkTrue(IsPalindrome("소있고지게지고있소"), t)
        checkTrue(IsPalindrome("いかにもにかい"), t)
        checkTrue(IsPalindrome("ANNA"), t)
        checkTrue(IsPalindrome("RACECAR"), t)
        checkFalse(IsPalindrome("Jesse"), t)
        checkFalse(IsPalindrome("いかに"), t)
        checkTrue(IsPalindrome("いかい"), t)
}

func checkTrue(b bool, t *testing.T) {
        if b {
                return
        } else {
                t.Error("Expected true, got false")
        }
}

func checkFalse(b bool, t *testing.T) {
        if !b {
                return
        } else {
                t.Error("Expected false, got true")
        }
}