Currently test_merge() only allows developers to merge in one branch.
However, this restriction is artificial and there is no reason why it
needs to be this way.

Extend test_merge() to allow the specification of multiple branches so
that octopus merges can be performed.

Signed-off-by: Denton Liu <liu.den...@gmail.com>
---
 t/test-lib-functions.sh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 87bf3a2287..b299ecc326 100644
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -228,9 +228,11 @@ test_commit () {
 # can be a tag pointing to the commit-to-merge.
 
 test_merge () {
+       label="$1" &&
+       shift &&
        test_tick &&
-       git merge -m "$1" "$2" &&
-       git tag "$1"
+       git merge -m "$label" "$@" &&
+       git tag "$label"
 }
 
 # Efficiently create <nr> commits, each with a unique number (from 1 to <nr>
-- 
2.23.0.248.g3a9dd8fb08

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