Add tests for ::is_dir().

Author: costdev

tests/phpunit/tests/filesystem/wpFilesystemDirect/isDir.php

@@ -0,0 +1,63 @@
+<?php
+/**
+ * Tests for the WP_Filesystem_Direct::is_dir() method.
+ *
+ * @package WordPress
+ */
+
+require_once __DIR__ . '/base.php';
+
+/**
+ * @group admin
+ * @group filesystem
+ * @group filesystem-direct
+ *
+ * @covers WP_Filesystem_Direct::is_dir
+ */
+class Tests_Filesystem_WpFilesystemDirect_IsDir extends WP_Filesystem_Direct_UnitTestCase {
+
+	/**
+	 * Tests that `WP_Filesystem_Direct::is_directory()` determines that
+	 * a path is a directory.
+	 *
+	 * @ticket 57774
+	 */
+	public function test_should_determine_that_a_path_is_a_directory() {
+		$this->assertTrue( self::$filesystem->is_dir( self::$file_structure['test_dir']['path'] ) );
+	}
+
+	/**
+	 * Tests that `WP_Filesystem_Direct::is_directory()` determines that
+	 * a path is not a directory.
+	 *
+	 * @ticket 57774
+	 *
+	 * @dataProvider data_should_determine_that_a_path_is_not_a_directory
+	 *
+	 * @param string $path The path to check.
+	 * @param string $type The type of resource. Accepts 'f' or 'd'.
+	 *                     Used to invert $expected due to data provider setup.
+	 */
+	public function test_should_determine_that_a_path_is_not_a_directory( $path ) {
+		$this->assertFalse( self::$filesystem->is_dir( self::$file_structure['test_dir']['path'] . $path ) );
+	}
+
+	/**
+	 * Data provider.
+	 *
+	 * @return array[]
+	 */
+	public function data_should_determine_that_a_path_is_not_a_directory() {
+		return array(
+			'a file that exists'              => array(
+				'path' => 'a_file_that_exists.txt',
+			),
+			'a file that does not exist'      => array(
+				'path' => 'a_file_that_does_not_exist.txt',
+			),
+			'a directory that does not exist' => array(
+				'path' => 'a_directory_that_does_not_exist',
+			),
+		);
+	}
+}