Add a skipped failing test for the result-repetition bug.

tests/test_strings.py

@@ -1,5 +1,6 @@
 """Tests for string searches"""
 
+from nose import SkipTest
 from nose.tools import eq_
 
 from dxr.testing import SingleFileTestCase, MINIMAL_MAIN
@@ -14,3 +15,17 @@ class StringTests(SingleFileTestCase):
     def test_negated_phrase(self):
         """Make sure a negated phrase search doesn't crash."""
         eq_(self.search_results('void -"int"'), [])
+
+
+class RepeatedResultTests(SingleFileTestCase):
+    # Putting code on the first line triggers the bug:
+    source = """int main(int argc, char* argv[]) {
+            return 0;
+        }
+        """
+
+    def test_repeated_results(self):
+        """Make sure we don't get the same line back twice."""
+        raise SkipTest
+        self.found_lines_eq('int', 
+                            '<b>int</b> main(<b>int</b> argc, char* argv[]) {')