apt-pkg/acquire-item.cc:

- do not unlink() on normal i-m-s hit, this fixes the problem
  that local repository files got a i-m-s hit too and got removed
test/pre-upload-check.py
- add test for local Packages.gz file removal
- add test for leftover files in partial/

apt-pkg/acquire-item.cc

@@ -693,10 +693,7 @@ void pkgAcqIndex::Done(string Message,unsigned long Size,string Hash,
    
    // The files timestamp matches
    if (StringToBool(LookupTag(Message,"IMS-Hit"),false) == true)
-   {
-      unlink(FileName.c_str());
       return;
-   }
 
    if (FileName == DestFile)
       Erase = true;

test/pre-upload-check.py

@@ -72,7 +72,6 @@ class testAuthentication(unittest.TestCase):
             call([self.apt,"update",
                   "-o","Dir::Etc::sourcelist=./%s" % f]+apt_args,
                  stdout=stdout, stderr=stderr)
-            # then get the pkg
             cmd = ["install", "-y", "-d", "--reinstall",
                    "%s=%s" % (self.pkg, self.pkgver),
                    "-o","Dir::state::Status=./fake-status"]
@@ -92,7 +91,9 @@ class testAuthentication(unittest.TestCase):
                        stdout=stdout, stderr=stderr)
             self.assert_(res == expected_res,
                          "test '%s' failed (got %s expected %s" % (f,res,expected_res))
-
+            if expected_res == 0:
+                self.assert_(len(glob.glob("/var/lib/apt/lists/partial/*")) == 0,
+                             "partial/ dir has leftover files: %s" % glob.glob("/var/lib/apt/lists/partial/*"))
 
 
 class testLocalRepositories(unittest.TestCase):
@@ -119,6 +120,22 @@ class testLocalRepositories(unittest.TestCase):
             self.assert_(os.path.exists(os.path.join(self.repo,"Packages.gz")),
                          "Packages.gz vanished from local repo")
 
+    def testLocalRepo2(self):
+        repo = os.path.abspath(os.path.join(os.getcwd(), self.repo_dir+"2"))
+        sources = os.path.join(self.repo, "sources.list")
+        s = open(sources,"w")
+        s.write("deb file://%s/ /\n" % repo)
+        s.close()
+
+        # two times to get at least one i-m-s hit
+        for i in range(2):
+            self.assert_(os.path.exists(sources))
+            cmd = [self.apt,"update","-o", "Dir::Etc::sourcelist=%s" % sources]+apt_args
+            res = call(cmd, stdout=stdout, stderr=stderr)
+            self.assertEqual(res, 0, "local repo2 test failed")
+            self.assert_(os.path.exists(os.path.join(repo,"Packages.gz")),
+                         "Packages.gz vanished from local repo")
+
     def testInstallFromLocalRepo(self):
         apt = [self.apt,"-o", "Dir::Etc::sourcelist=%s"% self.sources]+apt_args
         cmd = apt+["update"]