Added tests validating bug exists where stopword filtering was incorr…

…ectly case-sensitive.

spec/porter_stemmer_spec.js

@@ -21,6 +21,7 @@ THE SOFTWARE.
 */
 
 var stemmer = require('../lib/natural/stemmers/porter_stemmer');
+var stopwords = require('../lib/natural/util/stopwords');
 
 describe('porter_stemmer', function() {
 	it('should categorizeGroups', function() {
@@ -179,4 +180,13 @@ describe('porter_stemmer', function() {
 		expect('scoring stinks'.tokenizeAndStem()).toEqual(['score', 'stink']);
 		expect('SCORING STINKS'.tokenizeAndStem()).toEqual(['score', 'stink']);
 	});
+
+	it('should tokenize and stem ignoring stopwords', function() {
+		expect('My dog is very fun TO play with And another thing, he is A poodle.'.tokenizeAndStem()).toEqual(['dog', 'fun', 'plai', 'thing', 'poodl']);
+	});
+
+	it('should tokenize and stem ignoring all capital stopwords', function() {
+		var allCapitalStopwords = stopwords.words.join(' ').toUpperCase();
+		expect(allCapitalStopwords.tokenizeAndStem()).toEqual([]);
+	});
 });