From c1b5242d2f9b57e8d7ed16d777bb1b287e16d2f8 Mon Sep 17 00:00:00 2001
From: Almeida <almeidx@pm.me>
Date: Sat, 6 Jul 2024 21:32:01 +0100
Subject: [PATCH] test: complete collection coverage (#10380)

---
 packages/collection/__tests__/collection.test.ts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/packages/collection/__tests__/collection.test.ts b/packages/collection/__tests__/collection.test.ts
index fd538aca5..e0073ac07 100644
--- a/packages/collection/__tests__/collection.test.ts
+++ b/packages/collection/__tests__/collection.test.ts
@@ -138,6 +138,12 @@ describe('each() tests', () => {
 		expectInvalidFunctionError(() => coll.each(123), 123);
 	});
 
+	test('binds the thisArg', () => {
+		coll.each(function each() {
+			expect(this).toBeNull();
+		}, null);
+	});
+
 	test('iterate over each item', () => {
 		const coll = createTestCollection();
 		const a: [string, number][] = [];
@@ -964,6 +970,10 @@ describe('findLast() tests', () => {
 		expect(coll.findLast((value) => value % 2 === 1)).toStrictEqual(3);
 	});
 
+	test('returns undefined if no item matches', () => {
+		expect(coll.findLast((value) => value === 10)).toBeUndefined();
+	});
+
 	test('throws if fn is not a function', () => {
 		// @ts-expect-error: Invalid function
 		expectInvalidFunctionError(() => createCollection().findLast());
@@ -985,6 +995,10 @@ describe('findLastKey() tests', () => {
 		expect(coll.findLastKey((value) => value % 2 === 1)).toStrictEqual('c');
 	});
 
+	test('returns undefined if no item matches', () => {
+		expect(coll.findLastKey((value) => value === 10)).toBeUndefined();
+	});
+
 	test('throws if fn is not a function', () => {
 		// @ts-expect-error: Invalid function
 		expectInvalidFunctionError(() => createCollection().findLastKey());