tests: move generated common header comment into a variable

* tests/gen_tests.sh: Move generated file header comment
into a variable, use it in all cases.

diff --git a/tests/gen_tests.sh b/tests/gen_tests.sh
index 89108e8a4154de0e3399a3910bb0df639a0d67c9..ac3b7e15c42edec74e926b3e7bc4ad9830035267 100755 (executable)
--- a/tests/gen_tests.sh
+++ b/tests/gen_tests.sh
@@ -63,19 +63,21 @@ while read -r name args; do {
                [ "$match" = "$name" ] || continue
        fi
 
+       hdr="\
+#!/bin/sh -efu
+# Generated by $0 from $input; do not edit."
+
        case "$args" in
                +*)
                cat <<-EOF
-               #!/bin/sh -efu
-               # Generated by $0 from $input; do not edit.
+               $hdr
                . "\${srcdir=.}/${args#+}"
                EOF
                ;;
 
                ''|-*)
                cat <<-EOF
-               #!/bin/sh -efu
-               # Generated by $0 from $input; do not edit.
+               $hdr
                . "\${srcdir=.}/init.sh"
                run_strace_match_diff $args
                EOF
@@ -83,8 +85,7 @@ while read -r name args; do {
 
                *)
                cat <<-EOF
-               #!/bin/sh -efu
-               # Generated by $0 from $input; do not edit.
+               $hdr
                . "\${srcdir=.}/init.sh"
                $args
                EOF