t0064: make hash size independent

Compute test values of the appropriate size instead of hard-coding
40-character values.  Rename the echo20 function to echoid, since the
values may be of varying sizes.

Signed-off-by: brian m. carlson <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: bk2204

t/t0064-sha1-array.sh

@@ -3,58 +3,58 @@
 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
 '
 
 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
 '
 
 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
 '
 
 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 &&
@@ -63,28 +63,33 @@ 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
 '
 
 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 &&