LibJS: Convert all remaining non-Array tests to the new system :)

Author: https://github.com/mattco98
Commit: 15de2eda2b
Pull-request: https://github.com/SerenityOS/serenity/pull/2689
Reviewed-by: https://github.com/linusg

Libraries/LibJS/Tests/operators/modulo-basic.js

@@ -1,22 +1,16 @@
-load("test-common.js");
-
-try {
-  assert(10 % 3 === 1);
-  assert(10.5 % 2.5 === 0.5);
-  assert(-0.99 % 0.99 === -0);
+test("basic functionality", () => {
+  expect(10 % 3).toBe(1);
+  expect(10.5 % 2.5).toBe(0.5);
+  expect(-0.99 % 0.99).toBe(-0);
 
   // Examples from MDN:
   // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
-  assert(12 % 5 === 2);
-  assert(-1 % 2 === -1);
-  assert(1 % -2 === 1);
-  assert(isNaN(NaN % 2));
-  assert(1 % 2 === 1);
-  assert(2 % 3 === 2);
-  assert(-4 % 2 === -0);
-  assert(5.5 % 2 === 1.5);
-
-  console.log("PASS");
-} catch (e) {
-  console.log("FAIL: " + e);
-}
+  expect(12 % 5).toBe(2);
+  expect(-1 % 2).toBe(-1);
+  expect(1 % -2).toBe(1);
+  expect(1 % 2).toBe(1);
+  expect(2 % 3).toBe(2);
+  expect(-4 % 2).toBe(-0);
+  expect(5.5 % 2).toBe(1.5);
+  expect(NaN % 2).toBeNaN();
+});