t7406: avoid having git commands upstream of a pipe

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>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t7406-submodule-update.sh b/t/t7406-submodule-update.sh
index f821b01f150fb022a93c1c4f03ec027cc5e79196..2463863a51f3ca0dcb112cbcb24c6682b2af67a7 100755 (executable)
--- 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 &&
         git diff --name-only >out &&
         ! grep ^submodule$ out &&
@@ -886,7 +890,8 @@ 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=$(cd submodule2 && git rev-parse HEAD) &&
         git rm --cached submodule2 &&
         rm -rf submodule2 &&
@@ -895,7 +900,8 @@ test_expect_success 'submodule update properly revives a moved submodule' '
         git config -f .gitmodules submodule.submodule2.path "moved/sub module" &&
         git commit -am "post move" &&
         git submodule update &&
-        git status | sed "s/$H2/XXX/" >actual &&
+        git status > out &&
+        sed "s/$H2/XXX/" out >actual &&
         test_cmp expect actual
        )
 '
@@ -913,7 +919,7 @@ 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 &&
@@ -923,7 +929,8 @@ 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)
+               git -C submodule log --oneline >out &&
+               test_line_count = 1 out
        )
 '
 
@@ -939,7 +946,8 @@ 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)
+               git -C submodule log --oneline >out &&
+               test_line_count = 1 out
        )
 '