t7005: use modern test style

Tests in t7005 mask Git error codes and do not use our nice test
helpers. Improve that, move some code into the setup test, and drop a
few old-style blank lines while at it.

Best-viewed-with: --ignore-all-space
Signed-off-by: D. Ben Knoble <ben.knoble+github@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Author: benknoble

t/t7005-editor.sh

@@ -7,62 +7,45 @@ test_description='GIT_EDITOR, core.editor, and stuff'
 unset EDITOR VISUAL GIT_EDITOR
 
 test_expect_success 'determine default editor' '
-
 	vi=$(TERM=vt100 git var GIT_EDITOR) &&
 	test -n "$vi"
-
 '
 
-if ! expr "$vi" : '[a-z]*$' >/dev/null
-then
-	vi=
-fi
-
-for i in GIT_EDITOR core_editor EDITOR VISUAL $vi
-do
-	cat >e-$i.sh <<-EOF
-	#!$SHELL_PATH
-	echo "Edited by $i" >"\$1"
-	EOF
-	chmod +x e-$i.sh
-done
+test_expect_success setup '
+	if ! expr "$vi" : "[a-z]*$" >/dev/null
+	then
+		vi=
+	fi &&
 
-if ! test -z "$vi"
-then
-	mv e-$vi.sh $vi
-fi
+	for i in GIT_EDITOR core_editor EDITOR VISUAL $vi
+	do
+		write_script e-$i.sh <<-EOF || return 1
+			echo "Edited by $i" >"\$1"
+		EOF
+	done &&
 
-test_expect_success setup '
+	if ! test -z "$vi"
+	then
+		mv e-$vi.sh $vi
+	fi &&
 
 	msg="Hand-edited" &&
 	test_commit "$msg" &&
-	echo "$msg" >expect &&
-	git show -s --format=%s > actual &&
-	test_cmp expect actual
-
+	test_commit_message HEAD -m "$msg"
 '
 
 TERM=dumb
 export TERM
 test_expect_success 'dumb should error out when falling back on vi' '
-
-	if git commit --amend
-	then
-		echo "Oops?"
-		false
-	else
-		: happy
-	fi
+	test_must_fail git commit --amend
 '
 
 test_expect_success 'dumb should prefer EDITOR to VISUAL' '
-
 	EDITOR=./e-EDITOR.sh &&
 	VISUAL=./e-VISUAL.sh &&
 	export EDITOR VISUAL &&
 	git commit --amend &&
-	test "$(git show -s --format=%s)" = "Edited by EDITOR"
-
+	test_commit_message HEAD -m "Edited by EDITOR"
 '
 
 TERM=vt100
@@ -83,9 +66,7 @@ do
 	esac
 	test_expect_success "Using $i" '
 		git --exec-path=. commit --amend &&
-		git show -s --pretty=oneline |
-		sed -e "s/^[0-9a-f]* //" >actual &&
-		test_cmp expect actual
+		test_commit_message HEAD expect
 	'
 done
 
@@ -105,27 +86,22 @@ do
 	esac
 	test_expect_success "Using $i (override)" '
 		git --exec-path=. commit --amend &&
-		git show -s --pretty=oneline |
-		sed -e "s/^[0-9a-f]* //" >actual &&
-		test_cmp expect actual
+		test_commit_message HEAD expect
 	'
 done
 
 test_expect_success 'editor with a space' '
 	echo "echo space >\"\$1\"" >"e space.sh" &&
 	chmod a+x "e space.sh" &&
 	GIT_EDITOR="./e\ space.sh" git commit --amend &&
-	test space = "$(git show -s --pretty=format:%s)"
-
+	test_commit_message HEAD -m space
 '
 
 unset GIT_EDITOR
 test_expect_success 'core.editor with a space' '
-
 	git config core.editor \"./e\ space.sh\" &&
 	git commit --amend &&
-	test space = "$(git show -s --pretty=format:%s)"
-
+	test_commit_message HEAD -m space
 '
 
 test_done