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[PATCH v2 3/5] t1500: avoid changing working directory outside of tests

From
Eric Sunshine <sunshine@sunshineco.com>
Date
May 17, 2016, 19:36 UTC
Message-ID
<20160517193630.10379-4-sunshine@sunshineco.com>
In-Reply-To
<20160517193630.10379-1-sunshine@sunshineco.com>

Ideally, each test should be responsible for setting up state it needs rather than relying upon transient global state. Toward this end, teach test_rev_parse() to accept a "-C <dir>" option to allow callers to instruct it explicitly in which directory its tests should be run. Take advantage of this new option to avoid changing the working directory outside of tests.

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
---
 t/t1500-rev-parse.sh | 42 +++++++++++++++++++++++-------------------
 1 file changed, 23 insertions(+), 19 deletions(-)
diff --git a/t/t1500-rev-parse.sh b/t/t1500-rev-parse.sh
index c84f5c3..fb2cee8 100755
--- a/t/t1500-rev-parse.sh
+++ b/t/t1500-rev-parse.sh
@@ -3,8 +3,18 @@
 test_description='test git rev-parse'
 . ./test-lib.sh
 
-# usage: label is-bare is-inside-git is-inside-work prefix git-dir
+# usage: [options] label is-bare is-inside-git is-inside-work prefix git-dir
 test_rev_parse () {
+	dir=
+	while :
+	do
+		case "$1" in
+		-C) dir="$2"; shift; shift ;;
+		-*) error "test_rev_parse: unrecognized option '$1'" ;;
+		*) break ;;
+		esac
+	done
+
 	name=$1
 	shift
 
@@ -18,7 +28,7 @@ test_rev_parse () {
 		expect="$1"
 		test_expect_success "$name: $o" '
 			echo "$expect" >expect &&
-			git rev-parse --$o >actual &&
+			git ${dir:+-C "$dir"} rev-parse --$o >actual &&
 			test_cmp expect actual
 		'
 		shift
@@ -34,15 +44,10 @@ test_expect_success 'setup' '
 
 test_rev_parse toplevel false false true '' .git
 
-cd .git || exit 1
-test_rev_parse .git/ false true false '' .
-cd objects || exit 1
-test_rev_parse .git/objects/ false true false '' "$ROOT/.git"
-cd ../.. || exit 1
+test_rev_parse -C .git .git/ false true false '' .
+test_rev_parse -C .git/objects .git/objects/ false true false '' "$ROOT/.git"
 
-cd sub/dir || exit 1
-test_rev_parse subdirectory false false true sub/dir/ "$ROOT/.git"
-cd ../.. || exit 1
+test_rev_parse -C sub/dir subdirectory false false true sub/dir/ "$ROOT/.git"
 
 git config core.bare true
 test_rev_parse 'core.bare = true' true false false
@@ -50,30 +55,29 @@ test_rev_parse 'core.bare = true' true false false
 git config --unset core.bare
 test_rev_parse 'core.bare undefined' false false true
 
-cd work || exit 1
 GIT_DIR=../.git
-GIT_CONFIG="$(pwd)"/../.git/config
+GIT_CONFIG="$(pwd)/work/../.git/config"
 export GIT_DIR GIT_CONFIG
 
 git config core.bare false
-test_rev_parse 'GIT_DIR=../.git, core.bare = false' false false true ''
+test_rev_parse -C work 'GIT_DIR=../.git, core.bare = false' false false true ''
 
 git config core.bare true
-test_rev_parse 'GIT_DIR=../.git, core.bare = true' true false false ''
+test_rev_parse -C work 'GIT_DIR=../.git, core.bare = true' true false false ''
 
 git config --unset core.bare
-test_rev_parse 'GIT_DIR=../.git, core.bare undefined' false false true ''
+test_rev_parse -C work 'GIT_DIR=../.git, core.bare undefined' false false true ''
 
 GIT_DIR=../repo.git
-GIT_CONFIG="$(pwd)"/../repo.git/config
+GIT_CONFIG="$(pwd)/work/../repo.git/config"
 
 git config core.bare false
-test_rev_parse 'GIT_DIR=../repo.git, core.bare = false' false false true ''
+test_rev_parse -C work 'GIT_DIR=../repo.git, core.bare = false' false false true ''
 
 git config core.bare true
-test_rev_parse 'GIT_DIR=../repo.git, core.bare = true' true false false ''
+test_rev_parse -C work 'GIT_DIR=../repo.git, core.bare = true' true false false ''
 
 git config --unset core.bare
-test_rev_parse 'GIT_DIR=../repo.git, core.bare undefined' false false true ''
+test_rev_parse -C work 'GIT_DIR=../repo.git, core.bare undefined' false false true ''
 
 test_done
-- 
2.8.2.703.g78b384c
Previous: Eric SunshineNext: Junio C Hamano
Message 7 of 16 in “modernize t1500”
  1. 0/5 modernize t1500Eric Sunshine, May 17, 2016
  2. 1/5 t1500: be considerate to future potential testsEric Sunshine, May 17, 2016
  3. 2/5 t1500: test_rev_parse: facilitate future test enhancementsEric Sunshine, May 17, 2016
  4. SZEDER GáborMay 18, 2016
  5. Eric SunshineMay 18, 2016
  6. Eric SunshineMay 18, 2016
  7. 3/5 t1500: avoid changing working directory outside of testsEric Sunshine, May 17, 2016
  8. Junio C HamanoMay 17, 2016
  9. Eric SunshineMay 17, 2016
  10. Jeff KingMay 17, 2016
  11. Eric SunshineMay 17, 2016
  12. Junio C HamanoMay 17, 2016
  13. SZEDER GáborMay 17, 2016
  14. Eric SunshineMay 18, 2016
  15. 4/5 t1500: avoid setting configuration options outside of testsEric Sunshine, May 17, 2016
  16. 5/5 t1500: avoid setting environment variables outside of testsEric Sunshine, May 17, 2016

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