From 0af094770c4ebabc56ff761a8bd215bc397c0f7e Mon Sep 17 00:00:00 2001
From: João Augusto Costa Branco Marado Torres <torres.dev@disroot.org>
Date: Tue, 5 Aug 2025 18:50:37 +0100
Subject: refactor: reading page review
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Signed-off-by: João Augusto Costa Branco Marado Torres <torres.dev@disroot.org>
---
 src/utils/anonymous.test.ts | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

(limited to 'src/utils/anonymous.test.ts')

diff --git a/src/utils/anonymous.test.ts b/src/utils/anonymous.test.ts
index 2da613f..45896bf 100644
--- a/src/utils/anonymous.test.ts
+++ b/src/utils/anonymous.test.ts
@@ -9,6 +9,7 @@ import {
   identity,
   instanciate,
   pass,
+  transform,
 } from "./anonymous.ts";
 import { assertSpyCalls, spy } from "@std/testing/mock";
 import { FALSE, TRUE } from "../../tests/fixtures/test_data.ts";
@@ -128,3 +129,34 @@ describe("extremeBy", () => {
     assertEquals(extremeBy(data, "min"), Infinity);
   });
 });
+
+describe("transform", () => {
+  it("applies the function to the input", () => {
+    const result = transform(5, (x) => x * 2);
+    assertEquals(result, 10);
+  });
+
+  it("works with strings", () => {
+    const result = transform("hello", (x) => x.toUpperCase());
+    assertEquals(result, "HELLO");
+  });
+
+  it("works with objects", () => {
+    const input = { a: 1, b: 2 };
+    const result = transform(input, ({ a, b }) => a + b);
+    assertEquals(result, 3);
+  });
+
+  it("returns the correct type", () => {
+    const TRUE = true;
+    const FALSE = false;
+    const result = transform(TRUE, (x) => !x);
+    assertEquals(result, FALSE);
+  });
+
+  it("works with identity function", () => {
+    const input = [1, 2, 3];
+    const result = transform(input, identity);
+    assertEquals(result, input);
+  });
+});
-- 
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