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-rwxr-xr-xt/t5311-pack-bitmaps-shallow.sh56
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diff --git a/t/t5311-pack-bitmaps-shallow.sh b/t/t5311-pack-bitmaps-shallow.sh
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+#!/bin/sh
+
+test_description='check bitmap operation with shallow repositories'
+. ./test-lib.sh
+
+# We want to create a situation where the shallow, grafted
+# view of reachability does not match reality in a way that
+# might cause us to send insufficient objects.
+#
+# We do this with a history that repeats a state, like:
+#
+# A -- B -- C
+# file=1 file=2 file=1
+#
+# and then create a shallow clone to the second commit, B.
+# In a non-shallow clone, that would mean we already have
+# the tree for A. But in a shallow one, we've grafted away
+# A, and fetching A to B requires that the other side send
+# us the tree for file=1.
+test_shallow_bitmaps () {
+ writeLookupTable=false
+
+ for i in "$@"
+ do
+ case $i in
+ "pack.writeBitmapLookupTable") writeLookupTable=true;;
+ esac
+ done
+
+ test_expect_success 'setup shallow repo' '
+ rm -rf * .git &&
+ git init &&
+ git config pack.writeBitmapLookupTable '"$writeLookupTable"' &&
+ echo 1 >file &&
+ git add file &&
+ git commit -m orig &&
+ echo 2 >file &&
+ git commit -a -m update &&
+ git clone --no-local --bare --depth=1 . shallow.git &&
+ echo 1 >file &&
+ git commit -a -m repeat
+ '
+
+ test_expect_success 'turn on bitmaps in the parent' '
+ git repack -adb
+ '
+
+ test_expect_success 'shallow fetch from bitmapped repo' '
+ (cd shallow.git && git fetch)
+ '
+}
+
+test_shallow_bitmaps
+test_shallow_bitmaps "pack.writeBitmapLookupTable"
+
+test_done