tests: ensure $required is not set too late

[platform/upstream/automake.git] / t / ax / test-init.sh

diff --git a/t/ax/test-init.sh b/t/ax/test-init.sh
index 42db050..daf0bba 100644 (file)
--- a/t/ax/test-init.sh
+++ b/t/ax/test-init.sh
@@ -17,6 +17,10 @@
 
 set -e
 
+# The variable '$required' should no longer be modified after this
+# file gets sources.
+required=${required-}; readonly required
+
 # Source the actual code for test initialization and setup.
 . test-lib.sh
 . am-test-lib.sh