extend combine parameters to allow for file names and shell globs

3 files changed, 18 insertions, 9 deletions

diff --git a/coverage/cmdline.py b/coverage/cmdline.py
index 669c569..499444c 100644
--- a/coverage/cmdline.py
+++ b/coverage/cmdline.py
@@ -252,13 +252,13 @@ CMDS = {
         ),
 
     'combine': CmdOptionParser("combine", GLOBAL_ARGS,
-        usage = "<dir1> <dir2> ... <dirN>",
+        usage = "<path1> <path2> ... <pathN>",
         description = "Combine data from multiple coverage files collected "
             "with 'run -p'.  The combined results are written to a single "
             "file representing the union of the data. The positional "
-            "arguments are directories from which the data files should be "
-            "combined. By default, only data files in the current directory "
-            "are combined."
+            "arguments are files or directories or shell globs "
+            "representing the data files which should be combined. "
+            "By default, only data files in the current directory are combined."
         ),
 
     'debug': CmdOptionParser("debug", GLOBAL_ARGS,
diff --git a/coverage/data.py b/coverage/data.py
index de68dba..4e7d999 100644
--- a/coverage/data.py
+++ b/coverage/data.py
@@ -616,12 +616,21 @@ class CoverageDataFiles(object):
         data_dirs = data_dirs or [data_dir]
         files_to_combine = []
         for d in data_dirs:
-            if not os.path.isdir(d):
-                raise CoverageException("Couldn't combine from non-existent directory '%s'" % (d,))
-            pattern = os.path.join(os.path.abspath(d), localdot)
-            files_to_combine.extend(glob.glob(pattern))
+            if os.path.isfile(d):
+                files_to_combine.append(os.path.abspath(d))
+            elif os.path.isdir(d):
+                pattern = os.path.join(os.path.abspath(d), localdot)
+                files_to_combine.extend(glob.glob(pattern))
+            else:
+                files = glob.glob(d)
+                if not files:
+                    raise CoverageException("Couldn't combine from non-existing path '%s'" % (d,))
+                files_to_combine.extend(files)
+
 
         for f in files_to_combine:
+            if not os.path.isfile(f):
+                raise CoverageException("Couldn't combine from non-existing file '%s'" % (f,))
             new_data = CoverageData()
             new_data.read_file(f)
             data.update(new_data, aliases=aliases)
diff --git a/tests/test_data.py b/tests/test_data.py
index ce49bcb..a67a27c 100644
--- a/tests/test_data.py
+++ b/tests/test_data.py
@@ -686,6 +686,6 @@ class CoverageDataFilesTest(DataTestHelpers, CoverageTest):
 
     def test_combining_from_nonexistent_directories(self):
         covdata = CoverageData()
-        msg = "Couldn't combine from non-existent directory 'xyzzy'"
+        msg = "Couldn't combine from non-existing path 'xyzzy'"
         with self.assertRaisesRegex(CoverageException, msg):
             self.data_files.combine_parallel_data(covdata, data_dirs=['xyzzy'])