[PATCH v9 1/3] t7400-submodule-basic: modernize inspect() helper

[Emily Shaffer <emilyshaffer@google.com>]

Since the inspect() helper in the submodule-basic test suite was
written, 'git -C <dir>' was added. By using -C, we no longer need a
reference to the base directory for the test. This simplifies callsites,
and will make the addition of other arguments in later patches more
readable.

Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
---
 t/t7400-submodule-basic.sh | 40 +++++++++++++++-----------------------
 1 file changed, 16 insertions(+), 24 deletions(-)

diff --git a/t/t7400-submodule-basic.sh b/t/t7400-submodule-basic.sh
index e7cec2e457..40cf8d89aa 100755
--- a/t/t7400-submodule-basic.sh
+++ b/t/t7400-submodule-basic.sh
@@ -107,23 +107,15 @@ test_expect_success 'setup - repository to add submodules to' '
 # generates, which will expand symbolic links.
 submodurl=$(pwd -P)
 
-listbranches() {
-	git for-each-ref --format='%(refname)' 'refs/heads/*'
-}
-
 inspect() {
-	dir=$1 &&
-	dotdot="${2:-..}" &&
-
-	(
-		cd "$dir" &&
-		listbranches >"$dotdot/heads" &&
-		{ git symbolic-ref HEAD || :; } >"$dotdot/head" &&
-		git rev-parse HEAD >"$dotdot/head-sha1" &&
-		git update-index --refresh &&
-		git diff-files --exit-code &&
-		git clean -n -d -x >"$dotdot/untracked"
-	)
+	sub_dir=$1 &&
+
+	git -C "$sub_dir" for-each-ref --format='%(refname)' 'refs/heads/*' >heads &&
+	{ git -C "$sub_dir" symbolic-ref HEAD || :; } >head &&
+	git -C "$sub_dir" rev-parse HEAD >head-sha1 &&
+	git -C "$sub_dir" update-index --refresh &&
+	git -C "$sub_dir" diff-files --exit-code &&
+	git -C "$sub_dir" clean -n -d -x >untracked
 }
 
 test_expect_success 'submodule add' '
@@ -146,7 +138,7 @@ test_expect_success 'submodule add' '
 	) &&
 
 	rm -f heads head untracked &&
-	inspect addtest/submod ../.. &&
+	inspect addtest/submod &&
 	test_cmp expect heads &&
 	test_cmp expect head &&
 	test_must_be_empty untracked
@@ -248,7 +240,7 @@ test_expect_success 'submodule add --branch' '
 	) &&
 
 	rm -f heads head untracked &&
-	inspect addtest/submod-branch ../.. &&
+	inspect addtest/submod-branch &&
 	test_cmp expect-heads heads &&
 	test_cmp expect-head head &&
 	test_must_be_empty untracked
@@ -264,7 +256,7 @@ test_expect_success 'submodule add with ./ in path' '
 	) &&
 
 	rm -f heads head untracked &&
-	inspect addtest/dotsubmod/frotz ../../.. &&
+	inspect addtest/dotsubmod/frotz &&
 	test_cmp expect heads &&
 	test_cmp expect head &&
 	test_must_be_empty untracked
@@ -280,7 +272,7 @@ test_expect_success 'submodule add with /././ in path' '
 	) &&
 
 	rm -f heads head untracked &&
-	inspect addtest/dotslashdotsubmod/frotz ../../.. &&
+	inspect addtest/dotslashdotsubmod/frotz &&
 	test_cmp expect heads &&
 	test_cmp expect head &&
 	test_must_be_empty untracked
@@ -296,7 +288,7 @@ test_expect_success 'submodule add with // in path' '
 	) &&
 
 	rm -f heads head untracked &&
-	inspect addtest/slashslashsubmod/frotz ../../.. &&
+	inspect addtest/slashslashsubmod/frotz &&
 	test_cmp expect heads &&
 	test_cmp expect head &&
 	test_must_be_empty untracked
@@ -312,7 +304,7 @@ test_expect_success 'submodule add with /.. in path' '
 	) &&
 
 	rm -f heads head untracked &&
-	inspect addtest/realsubmod ../.. &&
+	inspect addtest/realsubmod &&
 	test_cmp expect heads &&
 	test_cmp expect head &&
 	test_must_be_empty untracked
@@ -328,7 +320,7 @@ test_expect_success 'submodule add with ./, /.. and // in path' '
 	) &&
 
 	rm -f heads head untracked &&
-	inspect addtest/realsubmod2 ../.. &&
+	inspect addtest/realsubmod2 &&
 	test_cmp expect heads &&
 	test_cmp expect head &&
 	test_must_be_empty untracked
@@ -359,7 +351,7 @@ test_expect_success 'submodule add in subdirectory' '
 	) &&
 
 	rm -f heads head untracked &&
-	inspect addtest/realsubmod3 ../.. &&
+	inspect addtest/realsubmod3 &&
 	test_cmp expect heads &&
 	test_cmp expect head &&
 	test_must_be_empty untracked
-- 
2.35.1.616.g0bdcbb4464-goog