[meld] test_filediff: Add expected text test to filter text testcase

[Kai Willadsen <kaiw src gnome org>]

commit 760f63acaf2f538fa1aa3ba68ddf1819fc86e9cd
Author: Kai Willadsen <kai willadsen gmail com>
Date:   Sat Jul 2 10:20:08 2016 +1000

    test_filediff: Add expected text test to filter text testcase

 test/test_filediff.py |   15 +++++++++++++--
 1 files changed, 13 insertions(+), 2 deletions(-)
---
diff --git a/test/test_filediff.py b/test/test_filediff.py
index d3f8aca..86b9759 100644
--- a/test/test_filediff.py
+++ b/test/test_filediff.py
@@ -8,61 +8,71 @@ from meld.filediff import FileDiff
 from meld.filters import FilterEntry
 
 
- pytest mark parametrize("text, ignored_ranges", [
+ pytest mark parametrize("text, ignored_ranges, expected_text", [
     #    0123456789012345678901234567890123456789012345678901234567890123456789
     # Matching without groups
     (
         "# asdasdasdasdsad",
         [(0, 17)],
+        "",
     ),
     # Matching with single group
     (
         "asdasdasdasdsab",
         [(1, 14)],
+        "ab",
     ),
     # Matching with multiple groups
     (
         "xasdyasdz",
         [(1, 4), (5, 8)],
+        "xyz",
     ),
     # Matching with multiple partially overlapping filters
     (
         "qaqxqbyqzq",
         [(2, 6), (7, 8)],
+        "qayzq",
     ),
     # Matching with multiple fully overlapping filters
     (
         "qaqxqybqzq",
         [(2, 8)],
+        "qazq",
     ),
     # Matching with and without groups, with single dominated match
     (
         "# asdasdasdasdsab",
         [(0, 17)],
+        "",
     ),
     # Matching with and without groups, with partially overlapping filters
     (
         "/*a*/ub",
         [(0, 6)],
+        "b",
     ),
     # Non-matching with groups
     (
         "xasdyasdx",
         [],
+        "xasdyasdx",
     ),
     # Multiple lines with non-overlapping filters
     (
         "#ab\na2b",
         [(0, 3), (5, 6)],
+        "\nab",
     ),
     # CVS keyword
     (
         "$Author: John Doe $",
         [(8, 18)],
+        "$Author:$",
     ),
 
 ])
-def test_filter_text(text, ignored_ranges):
+def test_filter_text(text, ignored_ranges, expected_text):
     filter_patterns = [
         '#.*',
         '/\*.*\*/',
@@ -102,3 +112,4 @@ def test_filter_text(text, ignored_ranges):
     print("Toggles:", toggles)
 
     assert toggles == ignored_ranges
+    assert text == expected_text