untracked-cache: be defensive about missing NULs in index

diff --git a/t/t0064-sha1-array.sh b/t/t0064-sha1-array.sh
index 67484502a007e3fed09fe381898bee52d21d07bb..5dda570b9a1ef3139165a4b901e16f64a3263209 100755 (executable)
--- a/t/t0064-sha1-array.sh
+++ b/t/t0064-sha1-array.sh
@@ -3,30 +3,30 @@
 test_description='basic tests for the SHA1 array implementation'
 . ./test-lib.sh
 
-echo20 () {
+echoid () {
        prefix="${1:+$1 }"
        shift
        while test $# -gt 0
        do
-               echo "$prefix$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1$1"
+               echo "$prefix$ZERO_OID" | sed -e "s/00/$1/g"
                shift
        done
 }
 
 test_expect_success 'ordered enumeration' '
-       echo20 "" 44 55 88 aa >expect &&
+       echoid "" 44 55 88 aa >expect &&
        {
-               echo20 append 88 44 aa 55 &&
+               echoid append 88 44 aa 55 &&
                echo for_each_unique
        } | test-tool sha1-array >actual &&
        test_cmp expect actual
 '
 
 test_expect_success 'ordered enumeration with duplicate suppression' '
-       echo20 "" 44 55 88 aa >expect &&
+       echoid "" 44 55 88 aa >expect &&
        {
-               echo20 append 88 44 aa 55 &&
-               echo20 append 88 44 aa 55 &&
+               echoid append 88 44 aa 55 &&
+               echoid append 88 44 aa 55 &&
                echo for_each_unique
        } | test-tool sha1-array >actual &&
        test_cmp expect actual
@@ -34,8 +34,8 @@ test_expect_success 'ordered enumeration with duplicate suppression' '
 
 test_expect_success 'lookup' '
        {
-               echo20 append 88 44 aa 55 &&
-               echo20 lookup 55
+               echoid append 88 44 aa 55 &&
+               echoid lookup 55
        } | test-tool sha1-array >actual &&
        n=$(cat actual) &&
        test "$n" -eq 1
@@ -43,8 +43,8 @@ test_expect_success 'lookup' '
 
 test_expect_success 'lookup non-existing entry' '
        {
-               echo20 append 88 44 aa 55 &&
-               echo20 lookup 33
+               echoid append 88 44 aa 55 &&
+               echoid lookup 33
        } | test-tool sha1-array >actual &&
        n=$(cat actual) &&
        test "$n" -lt 0
@@ -52,9 +52,9 @@ test_expect_success 'lookup non-existing entry' '
 
 test_expect_success 'lookup with duplicates' '
        {
-               echo20 append 88 44 aa 55 &&
-               echo20 append 88 44 aa 55 &&
-               echo20 lookup 55
+               echoid append 88 44 aa 55 &&
+               echoid append 88 44 aa 55 &&
+               echoid lookup 55
        } | test-tool sha1-array >actual &&
        n=$(cat actual) &&
        test "$n" -ge 2 &&
@@ -63,19 +63,24 @@ test_expect_success 'lookup with duplicates' '
 
 test_expect_success 'lookup non-existing entry with duplicates' '
        {
-               echo20 append 88 44 aa 55 &&
-               echo20 append 88 44 aa 55 &&
-               echo20 lookup 66
+               echoid append 88 44 aa 55 &&
+               echoid append 88 44 aa 55 &&
+               echoid lookup 66
        } | test-tool sha1-array >actual &&
        n=$(cat actual) &&
        test "$n" -lt 0
 '
 
 test_expect_success 'lookup with almost duplicate values' '
+       # n-1 5s
+       root=$(echoid "" 55) &&
+       root=${root%5} &&
        {
-               echo "append 5555555555555555555555555555555555555555" &&
-               echo "append 555555555555555555555555555555555555555f" &&
-               echo20 lookup 55
+               id1="${root}5" &&
+               id2="${root}f" &&
+               echo "append $id1" &&
+               echo "append $id2" &&
+               echoid lookup 55
        } | test-tool sha1-array >actual &&
        n=$(cat actual) &&
        test "$n" -eq 0
@@ -83,8 +88,8 @@ test_expect_success 'lookup with almost duplicate values' '
 
 test_expect_success 'lookup with single duplicate value' '
        {
-               echo20 append 55 55 &&
-               echo20 lookup 55
+               echoid append 55 55 &&
+               echoid lookup 55
        } | test-tool sha1-array >actual &&
        n=$(cat actual) &&
        test "$n" -ge 0 &&