From ec7a7c3f1672aa4474f7987e166be2eec98f1022 Mon Sep 17 00:00:00 2001
From: Jb Audras <audrasjb@git.wordpress.org>
Date: Sat, 8 Oct 2022 09:16:35 +0000
Subject: [PATCH] Build/Test Tools: Add tests coverage for
 `_wp_check_alternate_file_names()`.

This changeset adds missing unit tests for this function.

Props pbearne, costdev, peterwilsoncc.
Fixes #55199.


git-svn-id: https://develop.svn.wordpress.org/trunk@54422 602fd350-edb4-49c9-b593-d223f7449a82
---
 .../functions/wpCheckAlternateFileNames.php   | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 tests/phpunit/tests/functions/wpCheckAlternateFileNames.php

diff --git a/tests/phpunit/tests/functions/wpCheckAlternateFileNames.php b/tests/phpunit/tests/functions/wpCheckAlternateFileNames.php
new file mode 100644
index 0000000000..c21ae3374d
--- /dev/null
+++ b/tests/phpunit/tests/functions/wpCheckAlternateFileNames.php
@@ -0,0 +1,68 @@
+<?php
+
+/**
+ * @group functions.php
+ * @covers ::_wp_check_alternate_file_names
+ */
+class Tests_Functions_WpCheckAlternateFileNames extends WP_UnitTestCase {
+
+	/**
+	 * @dataProvider data_wp_check_alternate_file_names
+	 *
+	 * @ticket 55199
+	 *
+	 * @param array  $filenames Array of filenames to check.
+	 * @param string $dir       The directory to check.
+	 * @param array  $files     An array of existing files in the directory.
+	 * @param bool   $expected  Expected result.
+	 */
+	public function test_wp_check_alternate_file_names( $filenames, $dir, $files, $expected ) {
+		$this->assertSame( $expected, _wp_check_alternate_file_names( $filenames, $dir, $files ) );
+	}
+
+	/**
+	 * Data provider.
+	 *
+	 * @return array[]
+	 */
+	public function data_wp_check_alternate_file_names() {
+		return array(
+			'an existing file'                         => array(
+				'filenames' => array( 'canola.jpg' ),
+				'dir'       => DIR_TESTDATA . '/images/',
+				'files'     => array(),
+				'expected'  => true,
+			),
+			'multiple existing files'                  => array(
+				'filenames' => array( 'canola.jpg', 'codeispoetry.png' ),
+				'dir'       => DIR_TESTDATA . '/images/',
+				'files'     => array(),
+				'expected'  => true,
+			),
+			'a non-existent file and an existing file' => array(
+				'filenames' => array( 'an-image.jpg', 'codeispoetry.png' ),
+				'dir'       => DIR_TESTDATA . '/images/',
+				'files'     => array(),
+				'expected'  => true,
+			),
+			'a non-existent file and an existing image sub-size file' => array(
+				'filenames' => array( 'one-blue-pixel.png' ),
+				'dir'       => DIR_TESTDATA . '/images/',
+				'files'     => array( 'one-blue-pixel-100x100.png' ),
+				'expected'  => true,
+			),
+			'a non-existent file and no other existing files' => array(
+				'filenames' => array( 'filename.php' ),
+				'dir'       => DIR_TESTDATA . '/images/',
+				'files'     => array(),
+				'expected'  => false,
+			),
+			'multiple non-existent files and no existing image sub-size files' => array(
+				'filenames' => array( 'canola.jpg', 'codeispoetry.png' ),
+				'dir'       => DIR_TESTDATA . '/functions/',
+				'files'     => array( 'an-image-100x100.jpg', 'another-image-100x100.png' ),
+				'expected'  => false,
+			),
+		);
+	}
+}