tests: Set EDITOR=: and VISUAL=: globally

This way we don't have to remember to set it for each test; and
if we forget, we won't cause interactive editors to be spawned
for non-interactive tests.

Signed-off-by: Eric Wong <normalperson@yhbt.net>
Signed-off-by: Junio C Hamano <junkio@cox.net>

t/annotate-tests.sh

@@ -94,7 +94,7 @@ test_expect_success \
 test_expect_success \
     'merge-setup part 4' \
     'echo "evil merge." >>file &&
-     EDITOR=: VISUAL=: git commit -a --amend'
+     git commit -a --amend'
 
 test_expect_success \
     'Two lines blamed on A, one on B, two on B1, one on B2, one on A U Thor' \

t/t1400-update-ref.sh

@@ -190,7 +190,6 @@ test_expect_success \
 	 GIT_COMMITTER_DATE="2005-05-26 23:41" git-commit -F M -a &&
 	 h_OTHER=$(git-rev-parse --verify HEAD) &&
 	 echo FIXED >F &&
-	 EDITOR=true \
 	 GIT_AUTHOR_DATE="2005-05-26 23:44" \
 	 GIT_COMMITTER_DATE="2005-05-26 23:44" git-commit --amend &&
 	 h_FIXED=$(git-rev-parse --verify HEAD) &&

t/t4013-diff-various.sh

@@ -70,7 +70,7 @@ test_expect_success setup '
 	for i in 1 2; do echo $i; done >>dir/sub &&
 	git update-index file0 dir/sub &&
 
-	EDITOR=: VISUAL=: git commit --amend &&
+	git commit --amend &&
 	git show-branch
 '
 

t/test-lib.sh

@@ -9,6 +9,8 @@ LC_ALL=C
 PAGER=cat
 TZ=UTC
 export LANG LC_ALL PAGER TZ
+EDITOR=:
+VISUAL=:
 unset AUTHOR_DATE
 unset AUTHOR_EMAIL
 unset AUTHOR_NAME
@@ -30,6 +32,7 @@ unset SHA1_FILE_DIRECTORIES
 unset SHA1_FILE_DIRECTORY
 export GIT_AUTHOR_EMAIL GIT_AUTHOR_NAME
 export GIT_COMMITTER_EMAIL GIT_COMMITTER_NAME
+export EDITOR VISUAL
 
 # Each test should start with something like this, after copyright notices:
 #