[PATCHv2 04/21] completion tests: consolidate getting path of current working directory

["SZEDER Gábor" <szeder.dev@gmail.com>]

Some tests of the __gitdir() helper function use the $TRASH_DIRECTORY
variable in direct path comparisons.  In general this should be
avoided, because it might contain symbolic links.  There happens to be
no issues with this here, however, because those tests use
$TRASH_DIRECTORY both for specifying the expected result and for
specifying input which in turn is just 'echo'ed verbatim.

Other __gitdir() tests ask for the path of the trash directory by
running $(pwd -P) in each test, sometimes even twice in a single test.

Run $(pwd) only once at the beginning of the test script to store the
path of the trash directory in a variable, and use that variable in
all __gitdir() tests.

Signed-off-by: SZEDER Gábor <szeder.dev@gmail.com>
---
 t/t9902-completion.sh | 44 +++++++++++++++++++++-----------------------
 1 file changed, 21 insertions(+), 23 deletions(-)

diff --git a/t/t9902-completion.sh b/t/t9902-completion.sh
index 294a08cfe..030a16e77 100755
--- a/t/t9902-completion.sh
+++ b/t/t9902-completion.sh
@@ -124,15 +124,22 @@ invalid_variable_name='${foo.bar}'
 
 actual="$TRASH_DIRECTORY/actual"
 
+if test_have_prereq MINGW
+then
+	ROOT="$(pwd -W)"
+else
+	ROOT="$(pwd)"
+fi
+
 test_expect_success 'setup for __gitdir tests' '
 	mkdir -p subdir/subsubdir &&
 	git init otherrepo
 '
 
 test_expect_success '__gitdir - from command line (through $__git_dir)' '
-	echo "$TRASH_DIRECTORY/otherrepo/.git" >expected &&
+	echo "$ROOT/otherrepo/.git" >expected &&
 	(
-		__git_dir="$TRASH_DIRECTORY/otherrepo/.git" &&
+		__git_dir="$ROOT/otherrepo/.git" &&
 		__gitdir >"$actual"
 	) &&
 	test_cmp expected "$actual"
@@ -157,7 +164,7 @@ test_expect_success '__gitdir - .git directory in cwd' '
 '
 
 test_expect_success '__gitdir - .git directory in parent' '
-	echo "$(pwd -P)/.git" >expected &&
+	echo "$ROOT/.git" >expected &&
 	(
 		cd subdir/subsubdir &&
 		__gitdir >"$actual"
@@ -175,7 +182,7 @@ test_expect_success '__gitdir - cwd is a .git directory' '
 '
 
 test_expect_success '__gitdir - parent is a .git directory' '
-	echo "$(pwd -P)/.git" >expected &&
+	echo "$ROOT/.git" >expected &&
 	(
 		cd .git/refs/heads &&
 		__gitdir >"$actual"
@@ -184,9 +191,9 @@ test_expect_success '__gitdir - parent is a .git directory' '
 '
 
 test_expect_success '__gitdir - $GIT_DIR set while .git directory in cwd' '
-	echo "$TRASH_DIRECTORY/otherrepo/.git" >expected &&
+	echo "$ROOT/otherrepo/.git" >expected &&
 	(
-		GIT_DIR="$TRASH_DIRECTORY/otherrepo/.git" &&
+		GIT_DIR="$ROOT/otherrepo/.git" &&
 		export GIT_DIR &&
 		__gitdir >"$actual"
 	) &&
@@ -194,9 +201,9 @@ test_expect_success '__gitdir - $GIT_DIR set while .git directory in cwd' '
 '
 
 test_expect_success '__gitdir - $GIT_DIR set while .git directory in parent' '
-	echo "$TRASH_DIRECTORY/otherrepo/.git" >expected &&
+	echo "$ROOT/otherrepo/.git" >expected &&
 	(
-		GIT_DIR="$TRASH_DIRECTORY/otherrepo/.git" &&
+		GIT_DIR="$ROOT/otherrepo/.git" &&
 		export GIT_DIR &&
 		cd subdir &&
 		__gitdir >"$actual"
@@ -206,24 +213,15 @@ test_expect_success '__gitdir - $GIT_DIR set while .git directory in parent' '
 
 test_expect_success '__gitdir - non-existing $GIT_DIR' '
 	(
-		GIT_DIR="$TRASH_DIRECTORY/non-existing" &&
+		GIT_DIR="$ROOT/non-existing" &&
 		export GIT_DIR &&
 		test_must_fail __gitdir
 	)
 '
 
-function pwd_P_W () {
-	if test_have_prereq MINGW
-	then
-		pwd -W
-	else
-		pwd -P
-	fi
-}
-
 test_expect_success '__gitdir - gitfile in cwd' '
-	echo "$(pwd_P_W)/otherrepo/.git" >expected &&
-	echo "gitdir: $(pwd_P_W)/otherrepo/.git" >subdir/.git &&
+	echo "$ROOT/otherrepo/.git" >expected &&
+	echo "gitdir: $ROOT/otherrepo/.git" >subdir/.git &&
 	test_when_finished "rm -f subdir/.git" &&
 	(
 		cd subdir &&
@@ -233,8 +231,8 @@ test_expect_success '__gitdir - gitfile in cwd' '
 '
 
 test_expect_success '__gitdir - gitfile in parent' '
-	echo "$(pwd_P_W)/otherrepo/.git" >expected &&
-	echo "gitdir: $(pwd_P_W)/otherrepo/.git" >subdir/.git &&
+	echo "$ROOT/otherrepo/.git" >expected &&
+	echo "gitdir: $ROOT/otherrepo/.git" >subdir/.git &&
 	test_when_finished "rm -f subdir/.git" &&
 	(
 		cd subdir/subsubdir &&
@@ -244,7 +242,7 @@ test_expect_success '__gitdir - gitfile in parent' '
 '
 
 test_expect_success SYMLINKS '__gitdir - resulting path avoids symlinks' '
-	echo "$(pwd -P)/otherrepo/.git" >expected &&
+	echo "$ROOT/otherrepo/.git" >expected &&
 	mkdir otherrepo/dir &&
 	test_when_finished "rm -rf otherrepo/dir" &&
 	ln -s otherrepo/dir link &&
-- 
2.11.0.555.g967c1bcb3