t9107: use "return 1" instead of "exit 1"

When a test runs a loop, it cannot rely on the usual
&&-chaining to propagate a failure inside the loop; it needs
to break out with a failure signal. However, unless you are
in a subshell, doing so with "exit 1" will exit the entire
test script, not just the test snippet we are in (and cause
the harness to complain that test_done was never reached).

So the fundamental point of this patch is s/exit/return/.
But while we're there, let's fix a number of style and
readability issues:

- snippets in double-quotes need an extra layer of quoting
for their meta-characters; let's avoid that by using
single quotes

- accumulating loop output by appending to a file in each
iteration is brittle, as it can be affected by content
left in the file by earlier tests. Instead, it's better
to redirect stdout for the whole loop, so we know the
output only comes from that loop.

- using "test -z" to check that diff output is empty is
overly verbose; we can just ask diff to use --exit-code.

- we can factor out long lists of refs to make it more
obvious we're using the same ones in each loop

- subshells are unnecessary when ending an &&-chain with
"|| return 1"

- minor style fixups like space-after-redirection, and
"do" and "done" on their own lines

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t9107-git-svn-migrate.sh b/t/t9107-git-svn-migrate.sh
index 6efc2ab4d13696fe7debfa4ce8a702458ae48768..b6a99b807fbaf4d35314f5044cb311b55edc2927 100755 (executable)
--- a/t/t9107-git-svn-migrate.sh
+++ b/t/t9107-git-svn-migrate.sh
@@ -56,9 +56,11 @@ test_expect_success 'initialize a multi-repository repo' '
                                "^tags/\*:refs/remotes/origin/tags/\*$" &&
        git config --add svn-remote.svn.fetch "branches/a:refs/remotes/origin/a" &&
        git config --add svn-remote.svn.fetch "branches/b:refs/remotes/origin/b" &&
                                "^tags/\*:refs/remotes/origin/tags/\*$" &&
        git config --add svn-remote.svn.fetch "branches/a:refs/remotes/origin/a" &&
        git config --add svn-remote.svn.fetch "branches/b:refs/remotes/origin/b" &&

-       for i in tags/0.1 tags/0.2 tags/0.3; do
+       for i in tags/0.1 tags/0.2 tags/0.3
+       do

                git config --add svn-remote.svn.fetch \
                git config --add svn-remote.svn.fetch \

-                                $i:refs/remotes/origin/$i || exit 1; done &&
+                       $i:refs/remotes/origin/$i || return 1
+       done &&

        git config --get-all svn-remote.svn.fetch > fetch.out &&
        grep "^trunk:refs/remotes/origin/trunk$" fetch.out &&
        grep "^branches/a:refs/remotes/origin/a$" fetch.out &&
        git config --get-all svn-remote.svn.fetch > fetch.out &&
        grep "^trunk:refs/remotes/origin/trunk$" fetch.out &&
        grep "^branches/a:refs/remotes/origin/a$" fetch.out &&


@@ -70,30 +72,38 @@ test_expect_success 'initialize a multi-repository repo' '
        '
 
 # refs should all be different, but the trees should all be the same:
        '
 
 # refs should all be different, but the trees should all be the same:

-test_expect_success 'multi-fetch works on partial urls + paths' "
+test_expect_success 'multi-fetch works on partial urls + paths' '
+       refs="trunk a b tags/0.1 tags/0.2 tags/0.3" &&

        git svn multi-fetch &&
        git svn multi-fetch &&

-       for i in trunk a b tags/0.1 tags/0.2 tags/0.3; do
-               git rev-parse --verify refs/remotes/origin/\$i^0 >> refs.out || exit 1;
-           done &&
-       test -z \"\$(sort < refs.out | uniq -d)\" &&
-       for i in trunk a b tags/0.1 tags/0.2 tags/0.3; do
-         for j in trunk a b tags/0.1 tags/0.2 tags/0.3; do
-               if test \$j != \$i; then continue; fi
-           test -z \"\$(git diff refs/remotes/origin/\$i \
-                                refs/remotes/origin/\$j)\" ||exit 1; done; done
-       "
+       for i in $refs
+       do
+               git rev-parse --verify refs/remotes/origin/$i^0 || return 1;
+       done >refs.out &&
+       test -z "$(sort <refs.out | uniq -d)" &&
+       for i in $refs
+       do
+               for j in $refs
+               do
+                       git diff --exit-code refs/remotes/origin/$i \
+                                            refs/remotes/origin/$j ||
+                               return 1
+               done
+       done
+'

 
 test_expect_success 'migrate --minimize on old inited layout' '
        git config --unset-all svn-remote.svn.fetch &&
        git config --unset-all svn-remote.svn.url &&
        rm -rf "$GIT_DIR"/svn &&
 
 test_expect_success 'migrate --minimize on old inited layout' '
        git config --unset-all svn-remote.svn.fetch &&
        git config --unset-all svn-remote.svn.url &&
        rm -rf "$GIT_DIR"/svn &&

-       for i in $(cat fetch.out); do
+       for i in $(cat fetch.out)
+       do

                path=$(expr $i : "\([^:]*\):.*$")
                ref=$(expr $i : "[^:]*:\(refs/remotes/.*\)$")
                if test -z "$ref"; then continue; fi
                if test -n "$path"; then path="/$path"; fi
                path=$(expr $i : "\([^:]*\):.*$")
                ref=$(expr $i : "[^:]*:\(refs/remotes/.*\)$")
                if test -z "$ref"; then continue; fi
                if test -n "$path"; then path="/$path"; fi

-               ( mkdir -p "$GIT_DIR"/svn/$ref/info/ &&
-               echo "$svnrepo"$path > "$GIT_DIR"/svn/$ref/info/url ) || exit 1;
+               mkdir -p "$GIT_DIR"/svn/$ref/info/ &&
+               echo "$svnrepo"$path >"$GIT_DIR"/svn/$ref/info/url ||
+               return 1

        done &&
        git svn migrate --minimize &&
        test -z "$(git config -l | grep "^svn-remote\.git-svn\.")" &&
        done &&
        git svn migrate --minimize &&
        test -z "$(git config -l | grep "^svn-remote\.git-svn\.")" &&