[PATCH 1/3] tests: use "$TEST_DIRECTORY" instead of ".."

[Jeff King <peff@peff.net>]

The $TEST_DIRECTORY variable allows tests to find the
top-level test directory regardless of the current working
directory.

In the past, this has been used to accomodate tests which
change directories, but it is also the first step to being
able to move trash directories outside of the
$TEST_DIRECTORY hierarchy.

Signed-off-by: Jeff King <peff@peff.net>
---
 t/t3404-rebase-interactive.sh            |    2 +-
 t/t3411-rebase-preserve-around-merges.sh |    2 +-
 t/t3414-rebase-preserve-onto.sh          |    2 +-
 t/t4020-diff-external.sh                 |    2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
index a973628..4cae019 100755
--- a/t/t3404-rebase-interactive.sh
+++ b/t/t3404-rebase-interactive.sh
@@ -10,7 +10,7 @@ that the result still makes sense.
 '
 . ./test-lib.sh
 
-. ../lib-rebase.sh
+. "$TEST_DIRECTORY"/lib-rebase.sh
 
 set_fake_editor
 
diff --git a/t/t3411-rebase-preserve-around-merges.sh b/t/t3411-rebase-preserve-around-merges.sh
index 6533505..14a23cd 100755
--- a/t/t3411-rebase-preserve-around-merges.sh
+++ b/t/t3411-rebase-preserve-around-merges.sh
@@ -10,7 +10,7 @@ a merge to before the merge.
 '
 . ./test-lib.sh
 
-. ../lib-rebase.sh
+. "$TEST_DIRECTORY"/lib-rebase.sh
 
 set_fake_editor
 
diff --git a/t/t3414-rebase-preserve-onto.sh b/t/t3414-rebase-preserve-onto.sh
index 80019ee..ee0a6cc 100755
--- a/t/t3414-rebase-preserve-onto.sh
+++ b/t/t3414-rebase-preserve-onto.sh
@@ -10,7 +10,7 @@ aren'"'"'t on top of $ONTO, even if they are on top of $UPSTREAM.
 '
 . ./test-lib.sh
 
-. ../lib-rebase.sh
+. "$TEST_DIRECTORY"/lib-rebase.sh
 
 # Set up branches like this:
 # A1---B1---E1---F1---G1
diff --git a/t/t4020-diff-external.sh b/t/t4020-diff-external.sh
index 4ea42e0..a7602cf 100755
--- a/t/t4020-diff-external.sh
+++ b/t/t4020-diff-external.sh
@@ -166,7 +166,7 @@ test_expect_success 'diff --cached' '
 	git update-index --assume-unchanged file &&
 	echo second >file &&
 	git diff --cached >actual &&
-	test_cmp ../t4020/diff.NUL actual
+	test_cmp "$TEST_DIRECTORY"/t4020/diff.NUL actual
 '
 
 test_done
-- 
1.6.4.178.g7a987