[PATCH 4/8] Implement an interoperability test for fetch-pack/upload-pack

The next patches will extend the pack protocol. This test assures that this
extension is compatible to earlier versions of git-fetch-pack/git-upload-pack.

All you need to do to take advantage of this test, is to install older
known-to-be-working binaries in the path as "old-git-fetch-pack" and
"old-git-upload-pack".

Note that the warning when testing with old-git-fetch-pack is to be
expected (it just says that the old version was not taking advantage
of all the information which the server sent).

Signed-off-by: Johannes Schindelin <redacted>

---

 t/t5501-old-fetch-and-upload.sh |   43 +++++++++++++++++++++++++++++++++++++++
 1 files changed, 43 insertions(+), 0 deletions(-)
 create mode 100755 t/t5501-old-fetch-and-upload.sh

applies-to: 4286a14deeaa64cf1d00fc5f7cb197e91f230ab9
0bae675fd1eb4ec33834a6c8d0b6bbc88adc30da

diff --git a/t/t5501-old-fetch-and-upload.sh b/t/t5501-old-fetch-and-upload.sh
new file mode 100755
index 0000000..86df785
--- /dev/null
+++ b/t/t5501-old-fetch-and-upload.sh

@@ -0,0 +1,43 @@
+#!/bin/sh
+#
+# Copyright (c) 2005 Johannes Schindelin
+#
+
+# Test that the current fetch-pack/upload-pack plays nicely with
+# an old counterpart
+
+cd $(dirname $0) || exit 1
+
+tmp=$(mktemp tmp-XXXX)
+
+retval=0
+
+if [ -z "$1" ]; then
+	list="fetch upload"
+else
+	list="$@"
+fi
+
+for i in $list; do
+	case "$i" in
+	fetch) pgm="old-git-fetch-pack"; replace="$pgm";;
+	upload) pgm="old-git-upload-pack"; replace="git-fetch-pack --exec=$pgm";;
+	both) pgm="old-git-upload-pack"; replace="old-git-fetch-pack --exec=$pgm";;
+	esac
+
+	if which $pgm; then
+		echo "Testing with $pgm"
+		sed -e "s/git-fetch-pack/$replace/g" \
+			-e "s/# old fails/warn/" < t5500-fetch-pack.sh > $tmp
+
+		sh $tmp || retval=$?
+		rm $tmp
+
+		test $retval != 0 && exit $retval
+	else
+		echo "Skipping test for $i, since I cannot find $pgm"
+	fi
+done
+
+exit 0
+

---
0.99.8.GIT

On Linux, "mktemp tmp-XXXX" will not work. Also, redirect stderr on which,
so it does not complain too loudly. After all, this test should only be
executed when old binaries are available.

Signed-off-by: Johannes Schindelin <redacted>
---

 t/t5501-old-fetch-and-upload.sh |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

applies-to: f961b5204f8ead99f2beb0b2dc9f1e662c47fd74
4462bf60f4fca1d7774f441b374943109083efd9

diff --git a/t/t5501-old-fetch-and-upload.sh b/t/t5501-old-fetch-and-upload.sh
index 86df785..ada5130 100755
--- a/t/t5501-old-fetch-and-upload.sh
+++ b/t/t5501-old-fetch-and-upload.sh

@@ -8,7 +8,7 @@
 
 cd $(dirname $0) || exit 1
 
-tmp=$(mktemp tmp-XXXX)
+tmp=$(mktemp /tmp/tmp-XXXXXXXX)
 
 retval=0
 

@@ -25,7 +25,7 @@ for i in $list; do
 	both) pgm="old-git-upload-pack"; replace="old-git-fetch-pack --exec=$pgm";;
 	esac
 
-	if which $pgm; then
+	if which $pgm 2>/dev/null; then
 		echo "Testing with $pgm"
 		sed -e "s/git-fetch-pack/$replace/g" \
 			-e "s/# old fails/warn/" < t5500-fetch-pack.sh > $tmp

---
0.99.8.GIT