Data commit

Task/Test-a-function/Scala/test-a-function.scala

@@ -0,0 +1,18 @@
+import org.scalacheck._
+import Prop._
+import Gen._
+
+object PalindromeCheck extends Properties("Palindrome") {
+  property("A string concatenated with its reverse is a palindrome") =
+    forAll { s: String => isPalindrome(s + s.reverse) }
+
+  property("A string concatenated with any character and its reverse is a palindrome") =
+    forAll { (s: String, c: Char) => isPalindrome(s + c + s.reverse) }
+
+  property("If the first half of a string is equal to the reverse of its second half, it is a palindrome") =
+    forAll { (s: String) => s.take(s.length / 2) != s.drop((s.length + 1) / 2).reverse || isPalindrome(s) }
+
+  property("If the first half of a string is different than the reverse of its second half, it isn't a palindrome") =
+    forAll { (s: String) => s.take(s.length / 2) == s.drop((s.length + 1) / 2).reverse || !isPalindrome(s) }
+
+}