improve: detect euro currency when a price is prefixed with a euro sign

Author: php-coder

src/main/java/ru/mystamps/web/feature/series/importing/SeriesInfoExtractorServiceImpl.java

@@ -80,6 +80,9 @@ public class SeriesInfoExtractorServiceImpl implements SeriesInfoExtractorServic
 	// Regular expression that matches Rubles (Russian currency).
 	// CheckStyle: ignore LineLength for next 1 line
 	private static final Pattern RUB_CURRENCY_REGEXP = Pattern.compile("([0-9][ ]?р(уб|\\.)|RUB [0-9])");
+
+	// Regular expression that matches Euro.
+	private static final Pattern EUR_CURRENCY_REGEXP = Pattern.compile("€[0-9]");
 
 	// Regular expression that matches Ukrainian hryvnia.
 	private static final Pattern UAH_CURRENCY_REGEXP = Pattern.compile("([0-9] |\\b)грн\\b");
@@ -505,6 +508,12 @@ public SeriesExtractedInfo extract(String pageUrl, RawParsedDataDto data) {
 			return Currency.RUB.toString();
 		}
 
+		matcher = EUR_CURRENCY_REGEXP.matcher(fragment);
+		if (matcher.find()) {
+			log.debug("Currency is EUR");
+			return Currency.EUR.toString();
+		}
+		
 		matcher = UAH_CURRENCY_REGEXP.matcher(fragment);
 		if (matcher.find()) {
 			log.debug("Currency is UAH");

src/test/groovy/ru/mystamps/web/feature/series/importing/SeriesInfoExtractorServiceImplTest.groovy

@@ -753,4 +753,13 @@ class SeriesInfoExtractorServiceImplTest extends Specification {
 			'US$16.50' | _
 	}
 
+	@Unroll
+	def 'extractCurrency() should extract EUR currency from "#fragment"'(String fragment) {
+		expect:
+			service.extractCurrency(fragment) == 'EUR'
+		where:
+			fragment | _
+			'€3.50'  | _
+	}
+	
 }