create( \Magento\CurrencySymbol\Model\System\Currencysymbol::class ); $currencySymbolOriginal = $currencySymbol->getCurrencySymbol($currencyCode); $request = $this->getRequest(); $request->setParam( 'custom_currency_symbol', [ $currencyCode => $inputCurrencySymbol, ] ); $request->setMethod(HttpRequest::METHOD_POST); $this->dispatch('backend/admin/system_currencysymbol/save'); $this->assertRedirect(); $this->assertEquals( $outputCurrencySymbol, $currencySymbol->getCurrencySymbol($currencyCode), 'Currency symbol has not been saved' ); //restore current symbol $currencySymbol->setCurrencySymbolsData([$currencyCode => $currencySymbolOriginal]); } /** * @return array */ public static function currencySymbolDataProvider() { return [ ['USD', 'customSymbolUSD', 'customSymbolUSD'], ['USD', '', 'customSymbolUSD'] ]; } }