t7501-commit.sh: explicitly check that -F prevents invoking the editor

The "--signoff" test case in t7500-commit.sh was setting VISUAL while
using -F -, which indeed tested that the editor is not spawned with -F.
However, having it there was confusing, since there was no obvious reason
to the casual reader for it to be there.

This commits removes the setting of VISUAL from the --signoff test, and
adds in t7501-commit.sh a dedicated test case, where the rest of tests for
-F are.

Signed-off-by: Adeodato Simó <dato@net.com.org.es>
Okay-then-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index 63bfc6d8b3..b4e2b4db84 100755
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -127,6 +127,26 @@ test_expect_success \
 	"showing committed revisions" \
 	"git rev-list HEAD >current"
 
+cat >editor <<\EOF
+#!/bin/sh
+sed -e "s/good/bad/g" < "$1" > "$1-"
+mv "$1-" "$1"
+EOF
+chmod 755 editor
+
+cat >msg <<EOF
+A good commit message.
+EOF
+
+test_expect_success \
+	'editor not invoked if -F is given' '
+	 echo "moo" >file &&
+	 VISUAL=./editor git commit -a -F msg &&
+	 git show -s --pretty=format:"%s" | grep -q good &&
+	 echo "quack" >file &&
+	 echo "Another good message." | VISUAL=./editor git commit -a -F - &&
+	 git show -s --pretty=format:"%s" | grep -q good
+	 '
 # We could just check the head sha1, but checking each commit makes it
 # easier to isolate bugs.