tests: prefer including 'test-init.sh' rather than './defs'

This is a follow-up to today's commit v1.12.4-22-g0610fc8,
"tests: prepare to move ./defs to t/ax/test-init.sh"

* All tests: To run the common setup, use the command:

    . test-init.sh

instead of the older, "historical" one:

    . ./defs || exit 1

Note that the "|| exit 1" wasn't really useful, since the 'errexit'
shell flag is in effect in both './defs' and 'test-init.sh', and all
the known shells that are good enough to run the automake testsuite
do automatically exit with error when a sourced file cannot be found
(at least, they do so in non-interactive mode, which is the only
mode that concerns us in the testsuite).

* t/ax/tap-summary-aux.sh, t/ax/testsuite-summary-checks.sh: Likewise.

* gen-testsuite-part: Do the same in the generated tests.

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

4 files changed, 4 insertions, 4 deletions

diff --git a/contrib/t/help-multilib.sh b/contrib/t/help-multilib.sh
index 3e89bbe6a..7973d92cc 100755
--- a/contrib/t/help-multilib.sh
+++ b/contrib/t/help-multilib.sh
@@ -17,7 +17,7 @@
 # Make sure that our macro 'AM_ENABLE_MULTILIB' adds proper text to
 # the configure help screen.
 
-. ./defs || exit 1
+. test-init.sh
 
 cat > configure.ac <<END
 AC_INIT([$me], [1.0])
diff --git a/contrib/t/multilib.sh b/contrib/t/multilib.sh
index fef1ec2ab..bfcdb530b 100755
--- a/contrib/t/multilib.sh
+++ b/contrib/t/multilib.sh
@@ -18,7 +18,7 @@
 # Based on a test case from Ralf Corsepius.
 
 required='gcc GNUmake'
-. ./defs || exit 1
+. test-init.sh
 
 mldir=$am_top_srcdir/contrib/multilib
 mkdir m4
diff --git a/contrib/t/parallel-tests-html-recursive.sh b/contrib/t/parallel-tests-html-recursive.sh
index 12d967ecf..8d038ef91 100755
--- a/contrib/t/parallel-tests-html-recursive.sh
+++ b/contrib/t/parallel-tests-html-recursive.sh
@@ -16,7 +16,7 @@
 
 # Recursive use of 'check-html'.  See Automake bug#11287.
 
-. ./defs || exit 1
+. test-init.sh
 
 # Try the variants that are tried in check-html.am.
 while :; do
diff --git a/contrib/t/parallel-tests-html.sh b/contrib/t/parallel-tests-html.sh
index e7abc6637..120cb784a 100755
--- a/contrib/t/parallel-tests-html.sh
+++ b/contrib/t/parallel-tests-html.sh
@@ -18,7 +18,7 @@
 #  - check-html
 #  - recheck-html
 
-. ./defs || exit 1
+. test-init.sh
 
 # Try the variants that are tried in check-html.am.
 while :; do