commit-graph: create write_commit_graph_context

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 92cf8f812cca26c94c8054ccd40af806f6b77310..80402a428f7735a031658a904d4f623f38e43464 100644 (file)
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -116,6 +116,13 @@ remove_cr () {
        tr '\015' Q | sed -e 's/Q$//'
 }
 
+# Generate an output of $1 bytes of all zeroes (NULs, not ASCII zeroes).
+# If $1 is 'infinity', output forever or until the receiving pipe stops reading,
+# whichever comes first.
+generate_zero_bytes () {
+       test-tool genzeros "$@"
+}
+
 # In some bourne shell implementations, the "unset" builtin returns
 # nonzero status when a variable to be unset was not set in the first
 # place.
@@ -1289,7 +1296,7 @@ test_set_port () {
                        port=$(($port + 10000))
                fi
                ;;
-       *[^0-9]*|0*)
+       *[!0-9]*|0*)
                error >&7 "invalid port number: $port"
                ;;
        *)