diff --git a/tests/phpunit/tests/admin/includesPlugin.php b/tests/phpunit/tests/admin/includesPlugin.php
index d4b07d3f4f..ebba733f23 100644
--- a/tests/phpunit/tests/admin/includesPlugin.php
+++ b/tests/phpunit/tests/admin/includesPlugin.php
@@ -403,7 +403,7 @@ class Tests_Admin_includesPlugin extends WP_UnitTestCase {
 	 * @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() );
 	}
 
diff --git a/tests/phpunit/tests/ajax/MediaEdit.php b/tests/phpunit/tests/ajax/MediaEdit.php
index aa6e6786a6..5bdee5e14b 100644
--- a/tests/phpunit/tests/ajax/MediaEdit.php
+++ b/tests/phpunit/tests/ajax/MediaEdit.php
@@ -96,7 +96,7 @@ class Tests_Ajax_MediaEdit extends WP_Ajax_UnitTestCase {
 		}
 
 		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.' );
 		}
 	}
 }
diff --git a/tests/phpunit/tests/functions.php b/tests/phpunit/tests/functions.php
index e6b8580dc8..06320930b9 100644
--- a/tests/phpunit/tests/functions.php
+++ b/tests/phpunit/tests/functions.php
@@ -173,7 +173,7 @@ class Tests_Functions extends WP_UnitTestCase {
 		// 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' );
diff --git a/tests/phpunit/tests/image/editorImagick.php b/tests/phpunit/tests/image/editorImagick.php
index dd3987a2cb..32f651fd29 100644
--- a/tests/phpunit/tests/image/editorImagick.php
+++ b/tests/phpunit/tests/image/editorImagick.php
@@ -607,7 +607,7 @@ class Tests_Image_Editor_Imagick extends WP_Image_UnitTestCase {
 		$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 );
diff --git a/tests/phpunit/tests/link/themeFile.php b/tests/phpunit/tests/link/themeFile.php
index 5e0b7786d0..3e78a655e3 100644
--- a/tests/phpunit/tests/link/themeFile.php
+++ b/tests/phpunit/tests/link/themeFile.php
@@ -121,13 +121,13 @@ class Tests_Link_ThemeFile extends WP_UnitTestCase {
 		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}" );
 		}
 
 	}
diff --git a/tests/phpunit/tests/multisite/ms-files-rewriting.php b/tests/phpunit/tests/multisite/ms-files-rewriting.php
index dd0f3560db..89cd341fb2 100644
--- a/tests/phpunit/tests/multisite/ms-files-rewriting.php
+++ b/tests/phpunit/tests/multisite/ms-files-rewriting.php
@@ -76,13 +76,13 @@ if ( is_multisite() ) :
 
 			// 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'] );
 		}
 	}
 
diff --git a/tests/phpunit/tests/multisite/site.php b/tests/phpunit/tests/multisite/site.php
index 557da8c06a..6f5873b4a2 100644
--- a/tests/phpunit/tests/multisite/site.php
+++ b/tests/phpunit/tests/multisite/site.php
@@ -391,13 +391,13 @@ if ( is_multisite() ) :
 
 			// 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() {
diff --git a/tests/phpunit/tests/rest-api/rest-plugins-controller.php b/tests/phpunit/tests/rest-api/rest-plugins-controller.php
index b9051115c4..4bfda0b3c6 100644
--- a/tests/phpunit/tests/rest-api/rest-plugins-controller.php
+++ b/tests/phpunit/tests/rest-api/rest-plugins-controller.php
@@ -844,7 +844,7 @@ class WP_REST_Plugins_Controller_Test extends WP_Test_REST_Controller_Testcase {
 		$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 );
 	}
 
 	/**