Add a test that makes sure ignoreSurroundingWhitespaces works for the tab character

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/csv/trunk@1466590 13f79535-47bb-0310-9956-ffa450edef68

Author: britter

src/test/java/org/apache/commons/csv/CSVLexerTest.java

@@ -70,6 +70,19 @@ public void testIgnoreSurroundingSpacesAreDeleted() throws IOException {
         assertThat(parser.nextToken(new Token()), matches(EOF, ""));
     }
 
+    @Test
+    public void testSurroundingTabsAreDeleted() throws IOException {
+        final String code = "noTabs,\tleadingTab,trailingTab\t,\tsurroundingTabs\t,\t\t,,";
+        final Lexer parser = getLexer(code, CSVFormat.newBuilder().withIgnoreSurroundingSpaces(true).build());
+        assertThat(parser.nextToken(new Token()), matches(TOKEN, "noTabs"));
+        assertThat(parser.nextToken(new Token()), matches(TOKEN, "leadingTab"));
+        assertThat(parser.nextToken(new Token()), matches(TOKEN, "trailingTab"));
+        assertThat(parser.nextToken(new Token()), matches(TOKEN, "surroundingTabs"));
+        assertThat(parser.nextToken(new Token()), matches(TOKEN, ""));
+        assertThat(parser.nextToken(new Token()), matches(TOKEN, ""));
+        assertThat(parser.nextToken(new Token()), matches(EOF, ""));
+    }
+
     @Test
     public void testIgnoreEmptyLines() throws IOException {
         final String code =