git p4 test: keep P4CLIENT changes inside subshells

diff --git a/t/t9806-git-p4-options.sh b/t/t9806-git-p4-options.sh
index 2892367830c90353698ef0554b84c1e66d36a0a2..8d914a5766f2ebe3a0a3a2095a6ddf24fe1025c5 100755 (executable)
--- a/t/t9806-git-p4-options.sh
+++ b/t/t9806-git-p4-options.sh
@@ -27,22 +27,109 @@ test_expect_success 'clone no --git-dir' '
        test_must_fail git p4 clone --git-dir=xx //depot
 '
 
-test_expect_success 'clone --branch' '
+test_expect_success 'clone --branch should checkout master' '
        git p4 clone --branch=refs/remotes/p4/sb --dest="$git" //depot &&
        test_when_finished cleanup_git &&
        (
                cd "$git" &&
-               git ls-files >files &&
-               test_line_count = 0 files &&
-               test_path_is_file .git/refs/remotes/p4/sb
+               git rev-parse refs/remotes/p4/sb >sb &&
+               git rev-parse refs/heads/master >master &&
+               test_cmp sb master &&
+               git rev-parse HEAD >head &&
+               test_cmp sb head
+       )
+'
+
+test_expect_success 'sync when no master branch prints a nice error' '
+       test_when_finished cleanup_git &&
+       git p4 clone --branch=refs/remotes/p4/sb --dest="$git" //depot@2 &&
+       (
+               cd "$git" &&
+               test_must_fail git p4 sync 2>err &&
+               grep "Error: no branch refs/remotes/p4/master" err
+       )
+'
+
+test_expect_success 'sync --branch builds the full ref name correctly' '
+       test_when_finished cleanup_git &&
+       (
+               cd "$git" &&
+               git init &&
+
+               git p4 sync --branch=b1 //depot &&
+               git rev-parse --verify refs/remotes/p4/b1 &&
+               git p4 sync --branch=p4/b2 //depot &&
+               git rev-parse --verify refs/remotes/p4/b2 &&
+
+               git p4 sync --import-local --branch=h1 //depot &&
+               git rev-parse --verify refs/heads/p4/h1 &&
+               git p4 sync --import-local --branch=p4/h2 //depot &&
+               git rev-parse --verify refs/heads/p4/h2 &&
+
+               git p4 sync --branch=refs/stuff //depot &&
+               git rev-parse --verify refs/stuff
+       )
+'
+
+# engages --detect-branches code, which will do filename filtering so
+# no sync to either b1 or b2
+test_expect_success 'sync when two branches but no master should noop' '
+       test_when_finished cleanup_git &&
+       (
+               cd "$git" &&
+               git init &&
+               git p4 sync --branch=refs/remotes/p4/b1 //depot@2 &&
+               git p4 sync --branch=refs/remotes/p4/b2 //depot@2 &&
+               git p4 sync &&
+               git show -s --format=%s refs/remotes/p4/b1 >show &&
+               grep "Initial import" show &&
+               git show -s --format=%s refs/remotes/p4/b2 >show &&
+               grep "Initial import" show
+       )
+'
+
+test_expect_success 'sync --branch updates specific branch, no detection' '
+       test_when_finished cleanup_git &&
+       (
+               cd "$git" &&
+               git init &&
+               git p4 sync --branch=b1 //depot@2 &&
+               git p4 sync --branch=b2 //depot@2 &&
+               git p4 sync --branch=b2 &&
+               git show -s --format=%s refs/remotes/p4/b1 >show &&
+               grep "Initial import" show &&
+               git show -s --format=%s refs/remotes/p4/b2 >show &&
+               grep "change 3" show
+       )
+'
+
+# allows using the refname "p4" as a short name for p4/master
+test_expect_success 'clone creates HEAD symbolic reference' '
+       git p4 clone --dest="$git" //depot &&
+       test_when_finished cleanup_git &&
+       (
+               cd "$git" &&
+               git rev-parse --verify refs/remotes/p4/master >master &&
+               git rev-parse --verify p4 >p4 &&
+               test_cmp master p4
+       )
+'
+
+test_expect_success 'clone --branch creates HEAD symbolic reference' '
+       git p4 clone --branch=refs/remotes/p4/sb --dest="$git" //depot &&
+       test_when_finished cleanup_git &&
+       (
+               cd "$git" &&
+               git rev-parse --verify refs/remotes/p4/sb >sb &&
+               git rev-parse --verify p4 >p4 &&
+               test_cmp sb p4
        )
 '
 
 test_expect_success 'clone --changesfile' '
-       cf="$TRASH_DIRECTORY/cf" &&
-       test_when_finished "rm \"$cf\"" &&
-       printf "1\n3\n" >"$cf" &&
-       git p4 clone --changesfile="$cf" --dest="$git" //depot &&
+       test_when_finished "rm cf" &&
+       printf "1\n3\n" >cf &&
+       git p4 clone --changesfile="$TRASH_DIRECTORY/cf" --dest="$git" //depot &&
        test_when_finished cleanup_git &&
        (
                cd "$git" &&
@@ -55,10 +142,9 @@ test_expect_success 'clone --changesfile' '
 '
 
 test_expect_success 'clone --changesfile, @all' '
-       cf="$TRASH_DIRECTORY/cf" &&
-       test_when_finished "rm \"$cf\"" &&
-       printf "1\n3\n" >"$cf" &&
-       test_must_fail git p4 clone --changesfile="$cf" --dest="$git" //depot@all
+       test_when_finished "rm cf" &&
+       printf "1\n3\n" >cf &&
+       test_must_fail git p4 clone --changesfile="$TRASH_DIRECTORY/cf" --dest="$git" //depot@all
 '
 
 # imports both master and p4/master in refs/heads
@@ -128,7 +214,7 @@ test_expect_success 'clone --use-client-spec' '
                exec >/dev/null &&
                test_must_fail git p4 clone --dest="$git" --use-client-spec
        ) &&
-       cli2="$TRASH_DIRECTORY/cli2" &&
+       cli2=$(test-path-utils real_path "$TRASH_DIRECTORY/cli2") &&
        mkdir -p "$cli2" &&
        test_when_finished "rmdir \"$cli2\"" &&
        (
@@ -140,9 +226,11 @@ test_expect_success 'clone --use-client-spec' '
                View: //depot/sub/... //client2/bus/...
                EOF
        ) &&
-       P4CLIENT=client2 &&
        test_when_finished cleanup_git &&
-       git p4 clone --dest="$git" --use-client-spec //depot/... &&
+       (
+               P4CLIENT=client2 &&
+               git p4 clone --dest="$git" --use-client-spec //depot/...
+       ) &&
        (
                cd "$git" &&
                test_path_is_file bus/dir/f4 &&
@@ -151,11 +239,11 @@ test_expect_success 'clone --use-client-spec' '
        cleanup_git &&
 
        # same thing again, this time with variable instead of option
-       mkdir "$git" &&
        (
                cd "$git" &&
                git init &&
                git config git-p4.useClientSpec true &&
+               P4CLIENT=client2 &&
                git p4 sync //depot/... &&
                git checkout -b master p4/master &&
                test_path_is_file bus/dir/f4 &&