t3430: add conflicting commit

Move the creation of conflicting-G from a test to the setup so that it
can be used in subsequent tests without creating the kind of implicit
dependencies that plague t3404. While we're at it simplify the
arguments to the test_commit() call the creates the conflicting commit.

Signed-off-by: Phillip Wood <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: phillipwood

t/t3430-rebase-merges.sh

@@ -13,8 +13,10 @@ Initial setup:
     -- B --                   (first)
    /       \
  A - C - D - E - H            (master)
-       \       /
-         F - G                (second)
+   \    \       /
+    \    F - G                (second)
+     \
+      Conflicting-G
 '
 . ./test-lib.sh
 . "$TEST_DIRECTORY"/lib-rebase.sh
@@ -49,7 +51,9 @@ test_expect_success 'setup' '
 	git merge --no-commit G &&
 	test_tick &&
 	git commit -m H &&
-	git tag -m H H
+	git tag -m H H &&
+	git checkout A &&
+	test_commit conflicting-G G.t
 '
 
 test_expect_success 'create completely different structure' '
@@ -72,7 +76,7 @@ test_expect_success 'create completely different structure' '
 	EOF
 	test_config sequence.editor \""$PWD"/replace-editor.sh\" &&
 	test_tick &&
-	git rebase -i -r A &&
+	git rebase -i -r A master &&
 	test_cmp_graph <<-\EOF
 	*   Merge the topic branch '\''onebranch'\''
 	|\
@@ -141,8 +145,7 @@ test_expect_success 'failed `merge` writes patch (may be rescheduled, too)' '
 
 	: fail because of merge conflict &&
 	rm G.t .git/rebase-merge/patch &&
-	git reset --hard &&
-	test_commit conflicting-G G.t not-G conflicting-G &&
+	git reset --hard conflicting-G &&
 	test_must_fail git rebase --continue &&
 	! grep "^merge -C .* G$" .git/rebase-merge/git-rebase-todo &&
 	test_path_is_file .git/rebase-merge/patch