diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index e4d3b8fdcd2..37619b65ce4 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -28,6 +28,11 @@ class WC_Unit_Tests_Bootstrap {
 		ini_set( 'display_errors','on' );
 		error_reporting( E_ALL );
 
+		// Ensure server variable is set for WP email functions.
+		if ( ! isset( $_SERVER['SERVER_NAME'] ) ) {
+			$_SERVER['SERVER_NAME'] = 'localhost';
+		}
+
 		$this->tests_dir    = dirname( __FILE__ );
 		$this->plugin_dir   = dirname( $this->tests_dir );
 		$this->wp_tests_dir = getenv( 'WP_TESTS_DIR' ) ? getenv( 'WP_TESTS_DIR' ) : '/tmp/wordpress-tests-lib';
diff --git a/tests/framework/class-wc-mock-wc-data.php b/tests/framework/class-wc-mock-wc-data.php
index 5898c6851fb..29ac53f1013 100644
--- a/tests/framework/class-wc-mock-wc-data.php
+++ b/tests/framework/class-wc-mock-wc-data.php
@@ -2,7 +2,7 @@
 /**
  * Used for exposing and testing the various Abstract WC_Data methods.
  */
-class WC_Mock_WC_data extends WC_Data {
+class WC_Mock_WC_Data extends WC_Data {
 
 	/**
 	 * Data array
diff --git a/tests/unit-tests/crud/meta.php b/tests/unit-tests/crud/meta.php
index f21314b2d0f..7738685d160 100644
--- a/tests/unit-tests/crud/meta.php
+++ b/tests/unit-tests/crud/meta.php
@@ -10,7 +10,7 @@ class WC_Tests_CRUD_Meta extends WC_Unit_Test_Case {
 	 * Create a test post we can add/test meta against.
 	 */
 	public function create_test_post() {
-		$object = new WC_Mock_WC_data();
+		$object = new WC_Mock_WC_Data();
 		$object->set_content( 'testing' );
 		$object->save();
 		return $object;
@@ -20,7 +20,7 @@ class WC_Tests_CRUD_Meta extends WC_Unit_Test_Case {
 	 * Create a test user we can add/test meta against.
 	 */
 	public function create_test_user() {
-		$object = new WC_Mock_WC_data();
+		$object = new WC_Mock_WC_Data();
 		$object->set_meta_type( 'user' );
 		$object->set_object_id_field( 'user_id' );
 		$object->set_content( 'testing@woo.dev' );
@@ -100,7 +100,7 @@ class WC_Tests_CRUD_Meta extends WC_Unit_Test_Case {
 			);
 		}
 
-		$object = new WC_Mock_WC_data();
+		$object = new WC_Mock_WC_Data();
 		$object->set_meta_data( $metadata );
 
 		$this->assertEquals( $metadata, $object->get_meta_data() );
@@ -205,7 +205,7 @@ class WC_Tests_CRUD_Meta extends WC_Unit_Test_Case {
 	 * data before a save.
 	 */
 	function test_add_meta_data_overwrite_before_save() {
-		$object = new WC_Mock_WC_data;
+		$object = new WC_Mock_WC_Data;
 		$object->add_meta_data( 'test_field_0', 'another field', true );
 		$object->add_meta_data( 'test_field_1', 'another field', true );
 		$object->add_meta_data( 'test_field_2', 'val1', true );