SeriesInfoExtractorServiceImpl.extractQuantity(): add unit tests.

Fix #788

Author: php-coder

src/main/java/ru/mystamps/web/service/SeriesInfoExtractorServiceImpl.java

@@ -198,7 +198,6 @@ protected Integer extractReleaseYear(String fragment) {
 		return null;
 	}
 
-	// @todo #781 SeriesInfoExtractorServiceImpl.extractQuantity(): add unit tests
 	// @todo #781 SeriesInfoExtractorServiceImpl.extractQuantity() respect MAX_STAMPS_IN_SERIES
 	protected Integer extractQuantity(String fragment) {
 		if (StringUtils.isBlank(fragment)) {

src/test/groovy/ru/mystamps/web/service/SeriesInfoExtractorServiceImplTest.groovy

@@ -309,6 +309,34 @@ class SeriesInfoExtractorServiceImplTest extends Specification {
 			'part of word2000' | _
 	}
 
+	//
+	// Tests for extractQuantity()
+	//
+	
+	def 'extractQuantity() should return null when fragment is null, empty or blank'() {
+		expect:
+			service.extractQuantity(nullOrBlank()) ==  null
+	}
+	
+	def 'extractQuantity() should return null for invalid price'() {
+		expect:
+			service.extractQuantity('0 марок') == null
+	}
+	
+	@Unroll
+	def 'extractQuantity() should extract quantity from "#fragment"'(String fragment, Integer expectedQuantity) {
+		expect:
+			service.extractQuantity(fragment) == expectedQuantity
+		where:
+			fragment               || expectedQuantity
+			'5 марок'              ||  5
+			'5 МАРОК'              ||  5
+			'22 марки'             || 22
+			'13 беззубцовые марок' || 13
+			'4 беззубцовые марки'  ||  4
+			'32 БЕЗЗУБЦОВЫЕ МАРКИ' || 32
+	}
+	
 	//
 	// Tests for extractSeller()
 	//