[PATCH v4 2/8] t3416: set $EDITOR in subshell

["Phillip Wood via GitGitGadget" <gitgitgadget@gmail.com>]

From: Phillip Wood <phillip.wood@dunelm.org.uk>

As $EDITOR is exported, setting it in one test affects all subsequent
tests. Avoid this by always setting it in a subshell. Also remove a
couple of unnecessary call to set_fake_editor where the editor does
not change the todo list.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 t/t3416-rebase-onto-threedots.sh | 31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

diff --git a/t/t3416-rebase-onto-threedots.sh b/t/t3416-rebase-onto-threedots.sh
index dc67d2308f3..01eb9513d6c 100755
--- a/t/t3416-rebase-onto-threedots.sh
+++ b/t/t3416-rebase-onto-threedots.sh
@@ -79,8 +79,10 @@ test_expect_success 'rebase -i --onto main...topic' '
 	git reset --hard &&
 	git checkout topic &&
 	git reset --hard G &&
-	set_fake_editor &&
-	EXPECT_COUNT=1 git rebase -i --onto main...topic F &&
+	(
+		set_fake_editor &&
+		EXPECT_COUNT=1 git rebase -i --onto main...topic F
+	) &&
 	git rev-parse HEAD^1 >actual &&
 	git rev-parse C^0 >expect &&
 	test_cmp expect actual
@@ -90,8 +92,10 @@ test_expect_success 'rebase -i --onto main...' '
 	git reset --hard &&
 	git checkout topic &&
 	git reset --hard G &&
-	set_fake_editor &&
-	EXPECT_COUNT=1 git rebase -i --onto main... F &&
+	(
+		set_fake_editor &&
+		EXPECT_COUNT=1 git rebase -i --onto main... F
+	) &&
 	git rev-parse HEAD^1 >actual &&
 	git rev-parse C^0 >expect &&
 	test_cmp expect actual
@@ -102,7 +106,6 @@ test_expect_success 'rebase --onto main...side requires a single merge-base' '
 	git checkout side &&
 	git reset --hard K &&
 
-	set_fake_editor &&
 	test_must_fail git rebase -i --onto main...side J 2>err &&
 	grep "need exactly one merge base" err
 '
@@ -157,8 +160,10 @@ test_expect_success 'rebase -i --keep-base main from topic' '
 	git checkout topic &&
 	git reset --hard G &&
 
-	set_fake_editor &&
-	EXPECT_COUNT=2 git rebase -i --keep-base main &&
+	(
+		set_fake_editor &&
+		EXPECT_COUNT=2 git rebase -i --keep-base main
+	) &&
 	git rev-parse C >base.expect &&
 	git merge-base main HEAD >base.actual &&
 	test_cmp base.expect base.actual &&
@@ -172,8 +177,10 @@ test_expect_success 'rebase -i --keep-base main topic from main' '
 	git checkout main &&
 	git branch -f topic G &&
 
-	set_fake_editor &&
-	EXPECT_COUNT=2 git rebase -i --keep-base main topic &&
+	(
+		set_fake_editor &&
+		EXPECT_COUNT=2 git rebase -i --keep-base main topic
+	) &&
 	git rev-parse C >base.expect &&
 	git merge-base main HEAD >base.actual &&
 	test_cmp base.expect base.actual &&
@@ -188,9 +195,13 @@ test_expect_success 'rebase --keep-base requires a single merge base' '
 	git checkout side &&
 	git reset --hard K &&
 
-	set_fake_editor &&
 	test_must_fail git rebase -i --keep-base main 2>err &&
 	grep "need exactly one merge base with branch" err
 '
 
+# This must be the last test in this file
+test_expect_success '$EDITOR and friends are unchanged' '
+	test_editor_unchanged
+'
+
 test_done
-- 
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