Revert "update tests, multiple exercises"

This reverts commit 2eb02ea212.

caesar/caesar.spec.js

@@ -1,25 +1,26 @@
-const caesar = require("./caesar");
+const expect = require('expect');
+const caesar = require('./caesar')
 
-describe("caesar", function () {
-  it("works with single letters", function () {
-    expect(caesar("A", 1)).toEqual("B");
+describe('caesar', function() {
+  test('works with single letters', function() {
+    expect(caesar('A', 1)).toBe('B');
   });
-  xit("works with words", function () {
-    expect(caesar("Aaa", 1)).toEqual("Bbb");
+  test.skip('works with words', function() {
+    expect(caesar('Aaa', 1)).toBe('Bbb');
   });
-  xit("works with phrases", function () {
-    expect(caesar("Hello, World!", 5)).toEqual("Mjqqt, Btwqi!");
+  test.skip('works with phrases', function() {
+    expect(caesar('Hello, World!', 5)).toBe('Mjqqt, Btwqi!');
   });
-  xit("works with negative shift", function () {
-    expect(caesar("Mjqqt, Btwqi!", -5)).toEqual("Hello, World!");
+  test.skip('works with negative shift', function() {
+    expect(caesar('Mjqqt, Btwqi!', -5)).toBe('Hello, World!');
   });
-  xit("wraps", function () {
-    expect(caesar("Z", 1)).toEqual("A");
+  test.skip('wraps', function() {
+    expect(caesar('Z', 1)).toBe('A');
   });
-  xit("works with large shift factors", function () {
-    expect(caesar("Hello, World!", 75)).toEqual("Ebiil, Tloia!");
+  test.skip('works with large shift factors', function() {
+    expect(caesar('Hello, World!', 75)).toBe('Ebiil, Tloia!');
   });
-  xit("works with large negative shift factors", function () {
-    expect(caesar("Hello, World!", -29)).toEqual("Ebiil, Tloia!");
+  test.skip('works with large negative shift factors', function() {
+    expect(caesar('Hello, World!', -29)).toBe('Ebiil, Tloia!');
   });
 });