t0001: drop subshells just for "cd"

Many tests do something like:

  (
	mkdir foo &&
	cd foo &&
	git init
  )

You can do the same these days with "git init foo", which
makes the tests shorter and simpler to read.

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

t/t0001-init.sh

@@ -24,11 +24,7 @@ check_config () {
 }
 
 test_expect_success 'plain' '
-	(
-		mkdir plain &&
-		cd plain &&
-		git init
-	) &&
+	git init plain &&
 	check_config plain/.git false unset
 '
 
@@ -90,11 +86,7 @@ test_expect_success 'plain with GIT_WORK_TREE' '
 '
 
 test_expect_success 'plain bare' '
-	(
-		mkdir plain-bare-1 &&
-		cd plain-bare-1 &&
-		git --bare init
-	) &&
+	git --bare init plain-bare-1 &&
 	check_config plain-bare-1 true unset
 '
 
@@ -112,12 +104,7 @@ test_expect_success 'GIT_DIR bare' '
 '
 
 test_expect_success 'init --bare' '
-
-	(
-		mkdir init-bare.git &&
-		cd init-bare.git &&
-		git init --bare
-	) &&
+	git init --bare init-bare.git &&
 	check_config init-bare.git true unset
 '
 
@@ -166,26 +153,14 @@ test_expect_success 'reinit' '
 test_expect_success 'init with --template' '
 	mkdir template-source &&
 	echo content >template-source/file &&
-	(
-		mkdir template-custom &&
-		cd template-custom &&
-		git init --template=../template-source
-	) &&
+	git init --template=../template-source template-custom &&
 	test_cmp template-source/file template-custom/.git/file
 '
 
 test_expect_success 'init with --template (blank)' '
-	(
-		mkdir template-plain &&
-		cd template-plain &&
-		git init
-	) &&
+	git init template-plain &&
 	test_path_is_file template-plain/.git/info/exclude &&
-	(
-		mkdir template-blank &&
-		cd template-blank &&
-		git init --template=
-	) &&
+	git init --template= template-blank &&
 	test_path_is_missing template-blank/.git/info/exclude
 '
 
@@ -207,34 +182,21 @@ test_expect_success 'init with init.templatedir set' '
 test_expect_success 'init --bare/--shared overrides system/global config' '
 	test_config_global core.bare false &&
 	test_config_global core.sharedRepository 0640 &&
-	(
-		mkdir init-bare-shared-override &&
-		cd init-bare-shared-override &&
-		git init --bare --shared=0666
-	) &&
+	git init --bare --shared=0666 init-bare-shared-override &&
 	check_config init-bare-shared-override true unset &&
 	test x0666 = \
 	x`git config -f init-bare-shared-override/config core.sharedRepository`
 '
 
 test_expect_success 'init honors global core.sharedRepository' '
 	test_config_global core.sharedRepository 0666 &&
-	(
-		mkdir shared-honor-global &&
-		cd shared-honor-global &&
-		git init
-	) &&
+	git init shared-honor-global &&
 	test x0666 = \
 	x`git config -f shared-honor-global/.git/config core.sharedRepository`
 '
 
 test_expect_success 'init rejects insanely long --template' '
-	(
-		insane=$(printf "x%09999dx" 1) &&
-		mkdir test &&
-		cd test &&
-		test_must_fail git init --template=$insane
-	)
+	test_must_fail git init --template=$(printf "x%09999dx" 1) test
 '
 
 test_expect_success 'init creates a new directory' '