[PATCH v1] t2203: avoid masking exit codes in git status

[Tian Yuchen <a3205153416@gmail.com>]

The test script t2203-add-intent.sh uses the pattern `git status | grep
-v` in multiple places. This pipeline masks the exit code of `git status`.
If `git status` crashes, `grep -v` will successfully filter nothing
and return 0, causing the test to pass incorrectly.

Update the tests to use an intermediate file, ensuring that the exit
codecof `git status` is checked and any crash is caught immediately.

In one instance, we also need to update the grep pattern to ignore the
temporary file it self, to avoid causing a regression in the test output
comparison.

Signed-off-by: Tian Yuchen <a3205153416@gmail.com>
---
 t/t2203-add-intent.sh | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/t/t2203-add-intent.sh b/t/t2203-add-intent.sh
index 192ad14b5f..ac8bafa680 100755
--- a/t/t2203-add-intent.sh
+++ b/t/t2203-add-intent.sh
@@ -16,7 +16,8 @@ test_expect_success 'intent to add' '
 '
 
 test_expect_success 'git status' '
-	git status --porcelain | grep -v actual >actual &&
+	git status --porcelain >tmp &&
+	grep -v -e actual -e tmp tmp >actual &&
 	cat >expect <<-\EOF &&
 	DA 1.t
 	A  elif
@@ -26,7 +27,8 @@ test_expect_success 'git status' '
 '
 
 test_expect_success 'git status with porcelain v2' '
-	git status --porcelain=v2 | grep -v "^?" >actual &&
+	git status --porcelain=v2 >tmp &&
+	grep -v "^?" tmp >actual &&
 	nam1=$(echo 1 | git hash-object --stdin) &&
 	nam2=$(git hash-object elif) &&
 	cat >expect <<-EOF &&
@@ -171,17 +173,20 @@ test_expect_success 'rename detection finds the right names' '
 		mv first third &&
 		git add -N third &&
 
-		git status | grep -v "^?" >actual.1 &&
+		git status >tmp &&
+		grep -v "^?" tmp >actual.1 &&
 		test_grep "renamed: *first -> third" actual.1 &&
 
-		git status --porcelain | grep -v "^?" >actual.2 &&
+		git status --porcelain >tmp &&
+		grep -v "^?" tmp >actual.2 &&
 		cat >expected.2 <<-\EOF &&
 		 R first -> third
 		EOF
 		test_cmp expected.2 actual.2 &&
 
 		hash=$(git hash-object third) &&
-		git status --porcelain=v2 | grep -v "^?" >actual.3 &&
+		git status --porcelain=v2 >tmp &&
+		grep -v "^?" tmp >actual.3 &&
 		cat >expected.3 <<-EOF &&
 		2 .R N... 100644 100644 100644 $hash $hash R100 third	first
 		EOF
@@ -211,11 +216,13 @@ test_expect_success 'double rename detection in status' '
 		mv second third &&
 		git add -N third &&
 
-		git status | grep -v "^?" >actual.1 &&
+		git status >tmp &&
+		grep -v "^?" tmp >actual.1 &&
 		test_grep "renamed: *first -> second" actual.1 &&
 		test_grep "renamed: *second -> third" actual.1 &&
 
-		git status --porcelain | grep -v "^?" >actual.2 &&
+		git status --porcelain >tmp &&
+		grep -v "^?" tmp >actual.2 &&
 		cat >expected.2 <<-\EOF &&
 		R  first -> second
 		 R second -> third
@@ -223,7 +230,8 @@ test_expect_success 'double rename detection in status' '
 		test_cmp expected.2 actual.2 &&
 
 		hash=$(git hash-object third) &&
-		git status --porcelain=v2 | grep -v "^?" >actual.3 &&
+		git status --porcelain=v2 >tmp &&
+		grep -v "^?" tmp >actual.3 &&
 		cat >expected.3 <<-EOF &&
 		2 R. N... 100644 100644 100644 $hash $hash R100 second	first
 		2 .R N... 100644 100644 100644 $hash $hash R100 third	second

base-commit: 7264e61d87e58b9d0f5e6424c47c11e9657dfb75
-- 
2.43.0