Give the matchers a way to get info out of them.

2 files changed, 15 insertions, 2 deletions

diff --git a/coverage/files.py b/coverage/files.py
index 4c55151..8d154c6 100644
--- a/coverage/files.py
+++ b/coverage/files.py
@@ -144,6 +144,10 @@ class TreeMatcher(object):
     def __repr__(self):
         return "<TreeMatcher %r>" % self.dirs
 
+    def info(self):
+        """A list of strings for displaying when dumping state."""
+        return self.dirs
+
     def add(self, directory):
         """Add another directory to the list we match for."""
         self.dirs.append(directory)
@@ -169,6 +173,10 @@ class FnmatchMatcher(object):
     def __repr__(self):
         return "<FnmatchMatcher %r>" % self.pats
 
+    def info(self):
+        """A list of strings for displaying when dumping state."""
+        return self.pats
+
     def match(self, fpath):
         """Does `fpath` match one of our filename patterns?"""
         for pat in self.pats:
diff --git a/tests/test_files.py b/tests/test_files.py
index 509c23b..eeb2264 100644
--- a/tests/test_files.py
+++ b/tests/test_files.py
@@ -58,16 +58,19 @@ class MatcherTest(CoverageTest):
         file4 = self.make_file("sub3/file4.py")
         file5 = self.make_file("sub3/file5.c")
         fl = FileLocator()
-        tm = TreeMatcher([
+        trees = [
             fl.canonical_filename("sub"),
             fl.canonical_filename(file4),
-            ])
+            ]
+        tm = TreeMatcher(trees)
         self.assertTrue(tm.match(fl.canonical_filename(file1)))
         self.assertTrue(tm.match(fl.canonical_filename(file2)))
         self.assertFalse(tm.match(fl.canonical_filename(file3)))
         self.assertTrue(tm.match(fl.canonical_filename(file4)))
         self.assertFalse(tm.match(fl.canonical_filename(file5)))
 
+        self.assertEqual(tm.info(), trees)
+
     def test_fnmatch_matcher(self):
         file1 = self.make_file("sub/file1.py")
         file2 = self.make_file("sub/file2.c")
@@ -82,6 +85,8 @@ class MatcherTest(CoverageTest):
         self.assertTrue(fnm.match(fl.canonical_filename(file4)))
         self.assertFalse(fnm.match(fl.canonical_filename(file5)))
 
+        self.assertEqual(fnm.info(), ["*.py", "*/sub2/*"])
+
 
 class PathAliasesTest(CoverageTest):
     """Tests for coverage/files.py:PathAliases"""