Tests: Replace assertFileNotExists() with assertFileDoesNotExist().

The `assertFileNotExists()` method was hard deprecated in PHPUnit 9.1 and the functionality will be removed in PHPUnit 10.0.

The `assertFileDoesNotExist()` method was introduced as a replacement in PHPUnit 9.1.

This new PHPUnit method is polyfilled by the PHPUnit Polyfills and switching to it will future-proof the tests some more.

References:
* https://github.com/sebastianbergmann/phpunit/blob/9.1.5/ChangeLog-9.1.md#910---2020-04-03
* sebastianbergmann/phpunit#4076

Follow-up to [51559-51563].

Props jrf.
See #46149.

git-svn-id: https://develop.svn.wordpress.org/trunk@51564 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

tests/phpunit/tests/admin/includesPlugin.php

@@ -403,7 +403,7 @@ public function test_get_mu_plugins_when_mu_plugins_exists_but_is_empty() {
 	 * @covers ::get_mu_plugins
 	 */
 	public function test_get_mu_plugins_when_mu_plugins_directory_does_not_exist() {
-		$this->assertFileNotExists( WPMU_PLUGIN_DIR );
+		$this->assertFileDoesNotExist( WPMU_PLUGIN_DIR );
 		$this->assertSame( array(), get_mu_plugins() );
 	}
 

tests/phpunit/tests/ajax/MediaEdit.php

@@ -96,7 +96,7 @@ public function testImageEditOverwriteConstant() {
 		}
 
 		foreach ( $files_that_shouldnt_exist as $file ) {
-			$this->assertFileNotExists( $file, 'IMAGE_EDIT_OVERWRITE is leaving garbage image files behind.' );
+			$this->assertFileDoesNotExist( $file, 'IMAGE_EDIT_OVERWRITE is leaving garbage image files behind.' );
 		}
 	}
 }

tests/phpunit/tests/functions.php

@@ -173,7 +173,7 @@ function test_wp_unique_filename() {
 		// Check number is appended for file already exists.
 		$this->assertFileExists( $testdir . 'test-image.png', 'Test image does not exist' );
 		$this->assertSame( 'test-image-1.png', wp_unique_filename( $testdir, 'test-image.png' ), 'Number not appended correctly' );
-		$this->assertFileNotExists( $testdir . 'test-image-1.png' );
+		$this->assertFileDoesNotExist( $testdir . 'test-image-1.png' );
 
 		// Check special chars.
 		$this->assertSame( 'testtest-image.png', wp_unique_filename( $testdir, 'testtést-imagé.png' ), 'Filename with special chars failed' );

tests/phpunit/tests/image/editorImagick.php

@@ -607,7 +607,7 @@ public function test_directory_creation() {
 		$directory = realpath( DIR_TESTDATA ) . '/images/nonexistent-directory';
 		$editor    = new WP_Image_Editor_Imagick( $file );
 
-		$this->assertFileNotExists( $directory );
+		$this->assertFileDoesNotExist( $directory );
 
 		$loaded = $editor->load();
 		$this->assertNotWPError( $loaded );

tests/phpunit/tests/link/themeFile.php

@@ -121,13 +121,13 @@ public function test_theme_file_existance( $file, $expected_theme, $existence )
 		if ( in_array( 'theme-file-child', $existence, true ) ) {
 			$this->assertFileExists( WP_CONTENT_DIR . "/themes/theme-file-child/{$file}" );
 		} else {
-			$this->assertFileNotExists( WP_CONTENT_DIR . "/themes/theme-file-child/{$file}" );
+			$this->assertFileDoesNotExist( WP_CONTENT_DIR . "/themes/theme-file-child/{$file}" );
 		}
 
 		if ( in_array( 'theme-file-parent', $existence, true ) ) {
 			$this->assertFileExists( WP_CONTENT_DIR . "/themes/theme-file-parent/{$file}" );
 		} else {
-			$this->assertFileNotExists( WP_CONTENT_DIR . "/themes/theme-file-parent/{$file}" );
+			$this->assertFileDoesNotExist( WP_CONTENT_DIR . "/themes/theme-file-parent/{$file}" );
 		}
 
 	}

tests/phpunit/tests/multisite/ms-files-rewriting.php

@@ -76,13 +76,13 @@ function test_upload_directories_after_multiple_wpmu_delete_blog_with_ms_files()
 
 			// The file on the main site should still exist. The file on the deleted site should not.
 			$this->assertFileExists( $file1['file'] );
-			$this->assertFileNotExists( $file2['file'] );
+			$this->assertFileDoesNotExist( $file2['file'] );
 
 			wpmu_delete_blog( $blog_id, true );
 
 			// The file on the main site should still exist. The file on the deleted site should not.
 			$this->assertFileExists( $file1['file'] );
-			$this->assertFileNotExists( $file2['file'] );
+			$this->assertFileDoesNotExist( $file2['file'] );
 		}
 	}
 

tests/phpunit/tests/multisite/site.php

@@ -391,13 +391,13 @@ function test_upload_directories_after_multiple_wpmu_delete_blog() {
 
 			// The file on the main site should still exist. The file on the deleted site should not.
 			$this->assertFileExists( $file1['file'] );
-			$this->assertFileNotExists( $file2['file'] );
+			$this->assertFileDoesNotExist( $file2['file'] );
 
 			wpmu_delete_blog( $blog_id, true );
 
 			// The file on the main site should still exist. The file on the deleted site should not.
 			$this->assertFileExists( $file1['file'] );
-			$this->assertFileNotExists( $file2['file'] );
+			$this->assertFileDoesNotExist( $file2['file'] );
 		}
 
 		function test_wpmu_update_blogs_date() {

tests/phpunit/tests/rest-api/rest-plugins-controller.php

@@ -844,7 +844,7 @@ public function test_delete_item() {
 		$this->assertSame( 200, $response->get_status() );
 		$this->assertTrue( $response->get_data()['deleted'] );
 		$this->assertSame( self::PLUGIN, $response->get_data()['previous']['plugin'] );
-		$this->assertFileNotExists( WP_PLUGIN_DIR . '/' . self::PLUGIN_FILE );
+		$this->assertFileDoesNotExist( WP_PLUGIN_DIR . '/' . self::PLUGIN_FILE );
 	}
 
 	/**