t3404: rebase -i: demonstrate short SHA-1 collision

diff --git a/t/t9402-git-cvsserver-refs.sh b/t/t9402-git-cvsserver-refs.sh
index 735a018eccf934ef1e0bc96b905142d4823a2814..db69af2cff72733bda515446a48b5ec8dcee23fd 100755 (executable)
--- a/t/t9402-git-cvsserver-refs.sh
+++ b/t/t9402-git-cvsserver-refs.sh
@@ -330,7 +330,7 @@ test_expect_success 'validate result of edits [cvswork2]' '
 
 test_expect_success 'validate basic diffs saved during above cvswork2 edits' '
        test $(grep Index: cvsEdit1.diff | wc -l) = 1 &&
-       test ! -s cvsEdit2-empty.diff &&
+       test_must_be_empty cvsEdit2-empty.diff &&
        test $(grep Index: cvsEdit2-N.diff | wc -l) = 1 &&
        test $(grep Index: cvsEdit3.diff | wc -l) = 3 &&
        rm -rf diffSandbox &&
@@ -456,20 +456,20 @@ test_expect_success 'cvs up -r $(git rev-parse v1)' '
 
 test_expect_success 'cvs diff -r v1 -u' '
        ( cd cvswork && cvs -f diff -r v1 -u ) >cvsDiff.out 2>cvs.log &&
-       test ! -s cvsDiff.out &&
-       test ! -s cvs.log
+       test_must_be_empty cvsDiff.out &&
+       test_must_be_empty cvs.log
 '
 
 test_expect_success 'cvs diff -N -r v2 -u' '
        ( cd cvswork && ! cvs -f diff -N -r v2 -u ) >cvsDiff.out 2>cvs.log &&
-       test ! -s cvs.log &&
+       test_must_be_empty cvs.log &&
        test -s cvsDiff.out &&
        check_diff cvsDiff.out v2 v1 >check_diff.out 2>&1
 '
 
 test_expect_success 'cvs diff -N -r v2 -r v1.2' '
        ( cd cvswork && ! cvs -f diff -N -r v2 -r v1.2 -u ) >cvsDiff.out 2>cvs.log &&
-       test ! -s cvs.log &&
+       test_must_be_empty cvs.log &&
        test -s cvsDiff.out &&
        check_diff cvsDiff.out v2 v1.2 >check_diff.out 2>&1
 '
@@ -488,7 +488,7 @@ test_expect_success 'apply early [cvswork3] diff to b3' '
 
 test_expect_success 'check [cvswork3] diff' '
        ( cd cvswork3 && ! cvs -f diff -N -u ) >"$WORKDIR/cvsDiff.out" 2>cvs.log &&
-       test ! -s cvs.log &&
+       test_must_be_empty cvs.log &&
        test -s cvsDiff.out &&
        test $(grep Index: cvsDiff.out | wc -l) = 3 &&
        test_cmp cvsDiff.out cvswork3edit.diff &&