2 files changed, 37 insertions, 3 deletions
diff --git a/Lib/distutils/command/bdist_wininst.py b/Lib/distutils/command/bdist_wininst.py
index e997e8f..d6d01c6 100644
--- a/Lib/distutils/command/bdist_wininst.py
+++ b/Lib/distutils/command/bdist_wininst.py
@@ -330,9 +330,14 @@ class bdist_wininst(Command):
         directory = os.path.dirname(__file__)
         # we must use a wininst-x.y.exe built with the same C compiler
         # used for python.  XXX What about mingw, borland, and so on?
-        if self.plat_name == 'win32':
-            sfix = ''
+
+        # if plat_name starts with "win" but is not "win32"
+        # we want to strip "win" and leave the rest (e.g. -amd64)
+        # for all other cases, we don't want any suffix
+        if self.plat_name != 'win32' and self.plat_name[:3] == 'win':
+            sfix = self.plat_name[3:]
         else:
-            sfix = self.plat_name[3:] # strip 'win' - leaves eg '-amd64'
+            sfix = ''
+
         filename = os.path.join(directory, "wininst-%.1f%s.exe" % (bv, sfix))
         return open(filename, "rb").read()
diff --git a/Lib/distutils/tests/test_bdist_wininst.py b/Lib/distutils/tests/test_bdist_wininst.py
new file mode 100644
index 0000000..d851d6c
--- /dev/null
+++ b/Lib/distutils/tests/test_bdist_wininst.py
@@ -0,0 +1,29 @@
+"""Tests for distutils.command.bdist_wininst."""
+import unittest
+
+from distutils.command.bdist_wininst import bdist_wininst
+from distutils.tests import support
+
+class BuildWinInstTestCase(support.TempdirManager,
+                           unittest.TestCase):
+
+    def test_get_exe_bytes(self):
+
+        # issue5731: command was broken on non-windows platforms
+        # this test makes sure it works now for every platform
+        # let's create a command
+        pkg_pth, dist = self.create_dist()
+        cmd = bdist_wininst(dist)
+        cmd.ensure_finalized()
+
+        # let's run the code that finds the right wininst*.exe file
+        # and make sure it finds it and returns its content
+        # no matter what platform we have
+        exe_file = cmd.get_exe_bytes()
+        self.assert_(len(exe_file) > 10)
+
+def test_suite():
+    return unittest.makeSuite(BuildWinInstTestCase)
+
+if __name__ == '__main__':
+    test_support.run_unittest(test_suite())