[PATCH v2 12/12] test-lib: split up and deprecate test_create_repo()

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Remove various redundant or obsolete code from the test_create_repo()
function, and split up its use in test-lib.sh from what tests need
from it, leaving us with a pass-through wrapper for "git init" in
test-lib-functions.sh

Reasons for why we can remove various code from test_create_repo():

 1. "mkdir -p" isn't needed because "git init" itself will create
    leading directories if needed.

 2. Since we're now a simple wrapper for "git init" we don't need to
    check that we have only one argument. If someone wants to run
    "test_create_repo --bare x" that's OK.

 3. We won't ever hit that "Cannot setup test environment"
    error.

    Checking the test environment sanity when doing "git init" dates
    back to eea420693be (t0000: catch trivial pilot errors.,
    2005-12-10) and 2ccd2027b01 (trivial: check, if t/trash directory
    was successfully created, 2006-01-05).

    We can also see it in another form a bit later in my own
    0d314ce834d (test-lib: use subshell instead of cd $new && .. && cd
    $old, 2010-08-30).

    But since 2006f0adaee (t/test-lib: make sure Git has already been
    built, 2012-09-17) we already check if we have a built git
    earlier.

    The one thing this was testing after that 2012 change was that
    we'd just built "git", but not "git-init", but since
    3af4c7156c4 (tests: respect GIT_TEST_INSTALLED when initializing
    repositories, 2018-11-12) we invoke "git", not "git-init".

    So all of that's been checked already, and we don't need to
    re-check it here.

 4. We don't need to move .git/hooks out of the way.

    That dates back to c09a69a83e3 (Disable hooks during tests.,
    2005-10-16), since then hooks became disabled by default in
    f98f8cbac01 (Ship sample hooks with .sample suffix, 2008-06-24).

    So the hooks were already disabled by default, but as can be seen
    from "mkdir .git/hooks" changes various tests needed to re-setup
    that directory. Now they no longer do.

 5. Since we don't need to move the .git/hooks directory we don't need
    the subshell here either.

    That wasn't really needed for the .git/hooks either, but was being
    done for the convenience of not having to quote the path to the
    repository as we moved the hooks.

 6. We can drop the --template argument and instead rely on the
    GIT_TEMPLATE_DIR set to the same path earlier in test-lib.sh. See
    8683a45d669 (Introduce GIT_TEMPLATE_DIR, 2006-12-19)

 7. We only needed that ">&3 2>&4" redirection when invoked from
    test-lib.sh, and the same goes for needing the full path to "git".

    Let's move that special behavior into test-lib.sh itself.

In the end it turns out that all we needed was a plain "git init"
invocation.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 t/t5406-remote-rejects.sh           |  1 -
 t/t5407-post-rewrite-hook.sh        |  2 --
 t/t5409-colorize-remote-messages.sh |  1 -
 t/test-lib-functions.sh             | 15 ++-------------
 t/test-lib.sh                       |  5 ++++-
 5 files changed, 6 insertions(+), 18 deletions(-)

diff --git a/t/t5406-remote-rejects.sh b/t/t5406-remote-rejects.sh
index ff06f99649e..5c509db6fc3 100755
--- a/t/t5406-remote-rejects.sh
+++ b/t/t5406-remote-rejects.sh
@@ -5,7 +5,6 @@ test_description='remote push rejects are reported by client'
 . ./test-lib.sh
 
 test_expect_success 'setup' '
-	mkdir .git/hooks &&
 	write_script .git/hooks/update <<-\EOF &&
 	exit 1
 	EOF
diff --git a/t/t5407-post-rewrite-hook.sh b/t/t5407-post-rewrite-hook.sh
index 5bb23cc3a4e..6da8d760e28 100755
--- a/t/t5407-post-rewrite-hook.sh
+++ b/t/t5407-post-rewrite-hook.sh
@@ -20,8 +20,6 @@ test_expect_success 'setup' '
 	git checkout main
 '
 
-mkdir .git/hooks
-
 cat >.git/hooks/post-rewrite <<EOF
 #!/bin/sh
 echo \$@ > "$TRASH_DIRECTORY"/post-rewrite.args
diff --git a/t/t5409-colorize-remote-messages.sh b/t/t5409-colorize-remote-messages.sh
index 5d8f401d8ec..9f1a483f426 100755
--- a/t/t5409-colorize-remote-messages.sh
+++ b/t/t5409-colorize-remote-messages.sh
@@ -5,7 +5,6 @@ test_description='remote messages are colorized on the client'
 . ./test-lib.sh
 
 test_expect_success 'setup' '
-	mkdir .git/hooks &&
 	write_script .git/hooks/update <<-\EOF &&
 	echo error: error
 	echo ERROR: also highlighted
diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index 8e75a013a43..bd64a15c731 100644
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -1248,21 +1248,10 @@ test_atexit () {
 		} && (exit \"\$eval_ret\"); eval_ret=\$?; $test_atexit_cleanup"
 }
 
-# Most tests can use the created repository, but some may need to create more.
+# Deprecated wrapper for "git init", use "git init" directly instead
 # Usage: test_create_repo <directory>
 test_create_repo () {
-	test "$#" = 1 ||
-	BUG "not 1 parameter to test-create-repo"
-	repo="$1"
-	mkdir -p "$repo"
-	(
-		cd "$repo" || error "Cannot setup test environment"
-		"${GIT_TEST_INSTALLED:-$GIT_EXEC_PATH}/git$X" \
-			init \
-			"--template=$GIT_BUILD_DIR/templates/blt/" >&3 2>&4 ||
-		error "cannot run git init -- have you built things yet?"
-		mv .git/hooks .git/hooks-disabled
-	) || exit
+	git init "$@"
 }
 
 # This function helps on symlink challenged file systems when it is not
diff --git a/t/test-lib.sh b/t/test-lib.sh
index 9ebb595c335..f73c3c6fc72 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -1364,7 +1364,10 @@ rm -fr "$TRASH_DIRECTORY" || {
 remove_trash=t
 if test -z "$TEST_NO_CREATE_REPO"
 then
-	test_create_repo "$TRASH_DIRECTORY"
+	"${GIT_TEST_INSTALLED:-$GIT_BUILD_DIR}/git$X" \
+		init \
+		"$TRASH_DIRECTORY" >&3 2>&4 ||
+	error "cannot run git init"
 else
 	mkdir -p "$TRASH_DIRECTORY"
 fi
-- 
2.31.1.722.g788886f50a2




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