diff --git a/t/t5301-sliding-window.sh b/t/t5301-sliding-window.sh
new file mode 100755
index 00000000000..5a7232a577f
--- /dev/null
+++ b/t/t5301-sliding-window.sh
@@ -0,0 +1,60 @@
+#!/bin/sh
+#
+# Copyright (c) 2006 Shawn Pearce
+#
+
+test_description='mmap sliding window tests'
+. ./test-lib.sh
+
+test_expect_success \
+    'setup' \
+    'rm -f .git/index*
+     for i in a b c
+     do
+         echo $i >$i &&
+         dd if=/dev/urandom bs=32k count=1 >>$i &&
+         git-update-index --add $i || return 1
+     done &&
+     echo d >d && cat c >>d && git-update-index --add d &&
+     tree=`git-write-tree` &&
+     commit1=`git-commit-tree $tree </dev/null` &&
+     git-update-ref HEAD $commit1 &&
+     git-repack -a -d &&
+     test "`git-count-objects`" = "0 objects, 0 kilobytes" &&
+     pack1=`ls .git/objects/pack/*.pack` &&
+     test -f "$pack1"'
+
+test_expect_success \
+    'verify-pack -v, defaults' \
+    'git-verify-pack -v "$pack1"'
+
+test_expect_success \
+    'verify-pack -v, packedGitWindowSize == 1 page' \
+    'git-repo-config core.packedGitWindowSize 512 &&
+     git-verify-pack -v "$pack1"'
+
+test_expect_success \
+    'verify-pack -v, packedGit{WindowSize,Limit} == 1 page' \
+    'git-repo-config core.packedGitWindowSize 512 &&
+     git-repo-config core.packedGitLimit 512 &&
+     git-verify-pack -v "$pack1"'
+
+test_expect_success \
+    'repack -a -d, packedGit{WindowSize,Limit} == 1 page' \
+    'git-repo-config core.packedGitWindowSize 512 &&
+     git-repo-config core.packedGitLimit 512 &&
+     commit2=`git-commit-tree $tree -p $commit1 </dev/null` &&
+     git-update-ref HEAD $commit2 &&
+     git-repack -a -d &&
+     test "`git-count-objects`" = "0 objects, 0 kilobytes" &&
+     pack2=`ls .git/objects/pack/*.pack` &&
+     test -f "$pack2"
+     test "$pack1" \!= "$pack2"'
+
+test_expect_success \
+    'verify-pack -v, defaults' \
+    'git-repo-config --unset core.packedGitWindowSize &&
+     git-repo-config --unset core.packedGitLimit &&
+     git-verify-pack -v "$pack2"'
+
+test_done