/** * Test validation for empty/unset values. * @since 2.6.0 */ function test_wc_payment_token_echeck_validate_empty() { $token = new WC_Payment_Token_eCheck(); $token->set_token(time() . ' ' . __FUNCTION__); $this->assertFalse($token->validate()); $token->set_last4('1111'); $this->assertTrue($token->validate()); }