add tests for palindrome

UGcode101 · UGcode101 · commit a8bc0012d6fa · 2024-02-05T14:28:34.000-06:00
diff --git a/unit-testing/chapter-examples/palindrome-example/tests/palindrome.test.js b/unit-testing/chapter-examples/palindrome-example/tests/palindrome.test.js
@@ -0,0 +1,38 @@
+const isPalindrome = require("../palindrome.js");
+
+describe("testing isPalindrome", function () {
+  test("should return true for a single letter", function () {
+    expect(isPalindrome("a")).toBe(true);
+  });
+
+  test("should return true for a single letter repeated", function () {
+    expect(isPalindrome("aaa")).toBe(true);
+  });
+
+  test("should return true for a simple palindrome", function () {
+    expect(isPalindrome("aba")).toBe(true);
+  });
+
+  test("should return true for a longer palindrome", function () {
+    expect(isPalindrome("racecar")).toBe(true);
+  });
+  test("should return false for a longer non-palindrome", function () {
+    expect(isPalindrome("launchcode")).toBe(false);
+  });
+
+  test("should return false for a simple non-palindrome", function () {
+    expect(isPalindrome("ab")).toBe(false);
+  });
+
+  test("should be case-sensitive", function () {
+    expect(isPalindrome("abA")).toBe(false);
+  });
+
+  test("should consider whitespace", function () {
+    expect(isPalindrome("so many dynamos")).toBe(false);
+  });
+
+  test("should consider the empty string a palindrome", function () {
+    expect(isPalindrome("")).toBe(true);
+  });
+});
