[PATCH 2/3] t7406: avoid having git commands upstream of a pipe

[Elijah Newren <newren@gmail.com>]

When a git command is on the left side of a pipe, the pipe will swallow
its exit status, preventing us from detecting failures in said commands.
Restructure the tests to put the output in a temporary file to avoid
this problem.

Signed-off-by: Elijah Newren <newren@gmail.com>
---
 t/t7406-submodule-update.sh | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index e2405c96b5..c8971abd07 100755
--- a/t/t7406-submodule-update.sh
+++ b/t/t7406-submodule-update.sh
@@ -481,7 +481,8 @@ test_expect_success 'recursive submodule update - command in .git/config catches
 
 test_expect_success 'submodule init does not copy command into .git/config' '
 	(cd super &&
-	 H=$(git ls-files -s submodule | cut -d" " -f2) &&
+	 git ls-files -s submodule >out &&
+	 H=$(cut -d" " -f2 out) &&
 	 mkdir submodule1 &&
 	 git update-index --add --cacheinfo 160000 $H submodule1 &&
 	 git config -f .gitmodules submodule.submodule1.path submodule1 &&
@@ -579,9 +580,11 @@ test_expect_success 'submodule update - update=none in .git/config' '
 	  git checkout master &&
 	  compare_head
 	 ) &&
-	 git diff --name-only | grep submodule &&
+	 git diff --name-only >out &&
+	 grep submodule out &&
 	 git submodule update &&
-	 git diff --name-only | grep submodule &&
+	 git diff --name-only >out &&
+	 grep submodule out &&
 	 (cd submodule &&
 	  compare_head
 	 ) &&
@@ -597,7 +600,8 @@ test_expect_success 'submodule update - update=none in .git/config but --checkou
 	  git checkout master &&
 	  compare_head
 	 ) &&
-	 git diff --name-only | grep submodule &&
+	 git diff --name-only >out &&
+	 grep submodule out &&
 	 git submodule update --checkout &&
 	 test_must_fail git diff --name-only \| grep submodule &&
 	 (cd submodule &&
@@ -885,7 +889,8 @@ test_expect_success 'submodule update properly revives a moved submodule' '
 	 H=$(git rev-parse --short HEAD) &&
 	 git commit -am "pre move" &&
 	 H2=$(git rev-parse --short HEAD) &&
-	 git status | sed "s/$H/XXX/" >expect &&
+	 git status >out &&
+	 sed "s/$H/XXX/" out >expect &&
 	 H=$(cd submodule2 && git rev-parse HEAD) &&
 	 git rm --cached submodule2 &&
 	 rm -rf submodule2 &&
@@ -894,7 +899,8 @@ test_expect_success 'submodule update properly revives a moved submodule' '
 	 git config -f .gitmodules submodule.submodule2.path "moved/sub module" &&
 	 git commit -am "post move" &&
 	 git submodule update &&
-	 git status | sed "s/$H2/XXX/" >actual &&
+	 git status > out &&
+	 sed "s/$H2/XXX/" out >actual &&
 	 test_cmp expect actual
 	)
 '
@@ -912,7 +918,7 @@ test_expect_success SYMLINKS 'submodule update can handle symbolic links in pwd'
 
 test_expect_success 'submodule update clone shallow submodule' '
 	test_when_finished "rm -rf super3" &&
-	first=$(git -C cloned submodule status submodule |cut -c2-41) &&
+	first=$(git -C cloned rev-parse HEAD:submodule) &&
 	second=$(git -C submodule rev-parse HEAD) &&
 	commit_count=$(git -C submodule rev-list --count $first^..$second) &&
 	git clone cloned super3 &&
@@ -922,7 +928,7 @@ test_expect_success 'submodule update clone shallow submodule' '
 		sed -e "s#url = ../#url = file://$pwd/#" <.gitmodules >.gitmodules.tmp &&
 		mv -f .gitmodules.tmp .gitmodules &&
 		git submodule update --init --depth=$commit_count &&
-		test 1 = $(git -C submodule log --oneline | wc -l)
+		test 1 = $(git -C submodule rev-list --count HEAD)
 	)
 '
 
@@ -938,7 +944,7 @@ test_expect_success 'submodule update clone shallow submodule outside of depth'
 		test_i18ngrep "Direct fetching of that commit failed." actual &&
 		git -C ../submodule config uploadpack.allowReachableSHA1InWant true &&
 		git submodule update --init --depth=1 >actual &&
-		test 1 = $(git -C submodule log --oneline | wc -l)
+		test 1 = $(git -C submodule rev-list --count HEAD)
 	)
 '
 
-- 
2.18.0.548.gd57a518419