✅ Add tests

Author: UltiRequiem

deps.ts

@@ -2,4 +2,5 @@ export {
   assert,
   assertEquals,
   assertNotEquals,
+  assertThrows,
 } from "https://deno.land/std@0.135.0/testing/asserts.ts";

src/language/deep_equal.test.ts

@@ -7,4 +7,6 @@ Deno.test("deepEqual", () => {
   assert(deepEqual(obj, obj));
   assert(!deepEqual(obj, { here: 1, object: 2 }));
   assert(deepEqual(obj, { here: { is: "an" }, object: 2 }));
+  assert(!deepEqual({ a: "b" }, { c: "d" }));
+  assert(!deepEqual({ hey: "rosa", chales: "diah" }, { me: "eliaz" }));
 });

src/language/is_even.test.ts

@@ -1,5 +1,5 @@
 import { isEven } from "./is_even.ts";
-import { assert } from "../../deps.ts";
+import { assert, assertThrows } from "../../deps.ts";
 
 Deno.test("[isEven]", () => {
   assert(isEven(2));
@@ -8,4 +8,8 @@ Deno.test("[isEven]", () => {
   assert(isEven(24));
   assert(isEven(50));
   assert(!isEven(75));
+  assert(!isEven(75));
+  assertThrows(() => isEven(-3));
+  // @ts-expect-error
+  assertThrows(() => isEven("a"));
 });

src/language/range.test.ts

@@ -1,5 +1,5 @@
 import { range } from "./range.ts";
-import { assertEquals } from "../../deps.ts";
+import { assertEquals, assertThrows } from "../../deps.ts";
 
 Deno.test("[range] Main", () => {
   assertEquals(range(1, 3), [1, 2, 3]);
@@ -12,3 +12,10 @@ Deno.test("[range] Step", () => {
 Deno.test("[range] Negative numbers", () => {
   assertEquals(range(5, 2, -1), [5, 4, 3, 2]);
 });
+
+Deno.test("[range] Throws", () => {
+  assertThrows(() => {
+    // @ts-expect-error
+    range(1, "a", 0);
+  });
+});