Normalize paths

Fixes #364.

Signed-off-by: Stephen Finucane <stephen@that.guru>

stestr/commands/run.py

@@ -16,6 +16,7 @@
 import functools
 import io
 import os
+import os.path
 import subprocess
 import sys
 
@@ -524,6 +525,7 @@ def run_command(
         if "::" in ids:
             ids = ids.replace("::", ".")
         if ids.find("/") != -1:
+            ids = os.path.normpath(ids)
             root = ids.replace(".py", "")
             ids = root.replace("/", ".")
         stestr_python = sys.executable

stestr/tests/test_return_codes.py

@@ -500,6 +500,22 @@ def test_run_no_discover_file_path_failing(self):
         self.assertIn(" - Failed: 2", lines)
         self.assertIn(" - Unexpected Success: 1", lines)
 
+    def test_run_no_discover_unnormalized_file_path(self):
+        passing_string = "tests//test_passing.py"
+        out, err = self.assertRunExit("stestr run -n %s" % passing_string, 0)
+        lines = out.decode("utf8").splitlines()
+        self.assertIn(" - Passed: 2", lines)
+        self.assertIn(" - Failed: 0", lines)
+        self.assertIn(" - Expected Fail: 1", lines)
+
+    def test_run_no_discover_unnormalized_file_path_failing(self):
+        passing_string = "tests//test_failing.py"
+        out, err = self.assertRunExit("stestr run -n %s" % passing_string, 1)
+        lines = out.decode("utf8").splitlines()
+        self.assertIn(" - Passed: 0", lines)
+        self.assertIn(" - Failed: 2", lines)
+        self.assertIn(" - Unexpected Success: 1", lines)
+
 
 class TestReturnCodesToxIni(TestReturnCodes):
     def setUp(self):