[PATCH 3/3] t: detect and signal failure within loop

["Eric Sunshine via GitGitGadget" <gitgitgadget@gmail.com>]

From: Eric Sunshine <sunshine@sunshineco.com>

Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
---
 t/perf/p7527-builtin-fsmonitor.sh        | 2 +-
 t/t1092-sparse-checkout-compatibility.sh | 6 +++---
 t/t5329-pack-objects-cruft.sh            | 8 ++++----
 t/t6429-merge-sequence-rename-caching.sh | 2 +-
 4 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/t/perf/p7527-builtin-fsmonitor.sh b/t/perf/p7527-builtin-fsmonitor.sh
index 9338b9ea008..c3f9a4caa4c 100755
--- a/t/perf/p7527-builtin-fsmonitor.sh
+++ b/t/perf/p7527-builtin-fsmonitor.sh
@@ -249,7 +249,7 @@ test_expect_success "Cleanup temp and matrix branches" "
 	do
 		for fsm_val in $fsm_values
 		do
-			cleanup $uc_val $fsm_val
+			cleanup $uc_val $fsm_val || return 1
 		done
 	done
 "
diff --git a/t/t1092-sparse-checkout-compatibility.sh b/t/t1092-sparse-checkout-compatibility.sh
index e13368861ce..0302e36fd66 100755
--- a/t/t1092-sparse-checkout-compatibility.sh
+++ b/t/t1092-sparse-checkout-compatibility.sh
@@ -556,7 +556,7 @@ test_expect_success 'blame with pathspec inside sparse definition' '
 			deep/deeper1/a \
 			deep/deeper1/deepest/a
 	do
-		test_all_match git blame $file
+		test_all_match git blame $file || return 1
 	done
 '
 
@@ -1571,7 +1571,7 @@ test_expect_success 'sparse index is not expanded: blame' '
 			deep/deeper1/a \
 			deep/deeper1/deepest/a
 	do
-		ensure_not_expanded blame $file
+		ensure_not_expanded blame $file || return 1
 	done
 '
 
@@ -1907,7 +1907,7 @@ test_expect_success 'rm pathspec outside sparse definition' '
 		test_sparse_match test_must_fail git rm $file &&
 		test_sparse_match test_must_fail git rm --cached $file &&
 		test_sparse_match git rm --sparse $file &&
-		test_sparse_match git status --porcelain=v2
+		test_sparse_match git status --porcelain=v2 || return 1
 	done &&
 
 	cat >folder1-full <<-EOF &&
diff --git a/t/t5329-pack-objects-cruft.sh b/t/t5329-pack-objects-cruft.sh
index 8968f7a08d8..6049e2c1d78 100755
--- a/t/t5329-pack-objects-cruft.sh
+++ b/t/t5329-pack-objects-cruft.sh
@@ -29,7 +29,7 @@ basic_cruft_pack_tests () {
 				while read oid
 				do
 					path="$objdir/$(test_oid_to_path "$oid")" &&
-					printf "%s %d\n" "$oid" "$(test-tool chmtime --get "$path")"
+					printf "%s %d\n" "$oid" "$(test-tool chmtime --get "$path")" || exit 1
 				done |
 				sort -k1
 			) >expect &&
@@ -232,7 +232,7 @@ test_expect_success 'cruft tags rescue tagged objects' '
 		while read oid
 		do
 			test-tool chmtime -1000 \
-				"$objdir/$(test_oid_to_path $oid)"
+				"$objdir/$(test_oid_to_path $oid)" || exit 1
 		done <objects &&
 
 		test-tool chmtime -500 \
@@ -272,7 +272,7 @@ test_expect_success 'cruft commits rescue parents, trees' '
 		while read object
 		do
 			test-tool chmtime -1000 \
-				"$objdir/$(test_oid_to_path $object)"
+				"$objdir/$(test_oid_to_path $object)" || exit 1
 		done <objects &&
 		test-tool chmtime +500 "$objdir/$(test_oid_to_path \
 			$(git rev-parse HEAD))" &&
@@ -345,7 +345,7 @@ test_expect_success 'expired objects are pruned' '
 		while read object
 		do
 			test-tool chmtime -1000 \
-				"$objdir/$(test_oid_to_path $object)"
+				"$objdir/$(test_oid_to_path $object)" || exit 1
 		done <objects &&
 
 		keep="$(basename "$(ls $packdir/pack-*.pack)")" &&
diff --git a/t/t6429-merge-sequence-rename-caching.sh b/t/t6429-merge-sequence-rename-caching.sh
index e1ce9199164..650b3cd14ff 100755
--- a/t/t6429-merge-sequence-rename-caching.sh
+++ b/t/t6429-merge-sequence-rename-caching.sh
@@ -725,7 +725,7 @@ test_expect_success 'avoid assuming we detected renames' '
 		mkdir unrelated &&
 		for i in $(test_seq 1 10)
 		do
-			>unrelated/$i
+			>unrelated/$i || exit 1
 		done &&
 		test_seq  2 10 >numbers &&
 		test_seq 12 20 >values &&
-- 
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