Simplify t3410

Use test_commit() and test_merge(), reducing the code while making the
intent clearer.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t3410-rebase-preserve-dropped-merges.sh

@@ -22,47 +22,17 @@ rewritten.
 # where B, D and G touch the same file.
 
 test_expect_success 'setup' '
-	: > file1 &&
-	git add file1 &&
-	test_tick &&
-	git commit -m A &&
-	git tag A &&
-	echo 1 > file1 &&
-	test_tick &&
-	git commit -m B file1 &&
-	: > file2 &&
-	git add file2 &&
-	test_tick &&
-	git commit -m C &&
-	echo 2 > file1 &&
-	test_tick &&
-	git commit -m D file1 &&
-	: > file3 &&
-	git add file3 &&
-	test_tick &&
-	git commit -m E &&
-	git tag E &&
-	git checkout -b branch1 A &&
-	: > file4 &&
-	git add file4 &&
-	test_tick &&
-	git commit -m F &&
-	git tag F &&
-	echo 3 > file1 &&
-	test_tick &&
-	git commit -m G file1 &&
-	git tag G &&
-	: > file5 &&
-	git add file5 &&
-	test_tick &&
-	git commit -m H &&
-	git tag H &&
-	git checkout -b branch2 F &&
-	: > file6 &&
-	git add file6 &&
-	test_tick &&
-	git commit -m I &&
-	git tag I
+	test_commit A file1 &&
+	test_commit B file1 1 &&
+	test_commit C file2 &&
+	test_commit D file1 2 &&
+	test_commit E file3 &&
+	git checkout A &&
+	test_commit F file4 &&
+	test_commit G file1 3 &&
+	test_commit H file5 &&
+	git checkout F &&
+	test_commit I file6
 '
 
 # A - B - C - D - E
@@ -72,68 +42,44 @@ test_expect_success 'setup' '
 #         I -- G2 -- J -- K           I -- K
 # G2 = same changes as G
 test_expect_success 'skip same-resolution merges with -p' '
-	git checkout branch1 &&
+	git checkout H &&
 	! git merge E &&
-	echo 23 > file1 &&
-	git add file1 &&
-	git commit -m L &&
-	git checkout branch2 &&
-	echo 3 > file1 &&
-	git commit -a -m G2 &&
+	test_commit L file1 23 &&
+	git checkout I &&
+	test_commit G2 file1 3 &&
 	! git merge E &&
-	echo 23 > file1 &&
-	git add file1 &&
-	git commit -m J &&
-	echo file7 > file7 &&
-	git add file7 &&
-	git commit -m K &&
-	GIT_EDITOR=: git rebase -i -p branch1 &&
-	test $(git rev-parse branch2^^) = $(git rev-parse branch1) &&
+	test_commit J file1 23 &&
+	test_commit K file7 file7 &&
+	git rebase -i -p L &&
+	test $(git rev-parse HEAD^^) = $(git rev-parse L) &&
 	test "23" = "$(cat file1)" &&
-	test "" = "$(cat file6)" &&
-	test "file7" = "$(cat file7)" &&
-
-	git checkout branch1 &&
-	git reset --hard H &&
-	git checkout branch2 &&
-	git reset --hard I
+	test "I" = "$(cat file6)" &&
+	test "file7" = "$(cat file7)"
 '
 
 # A - B - C - D - E
 #   \             \ \
-#     F - G - H -- L \        -->   L
-#       \            |               \
-#         I -- G2 -- J -- K           I -- G2 -- K
+#     F - G - H -- L2 \        -->   L2
+#       \             |                \
+#         I -- G3 --- J2 -- K2           I -- G3 -- K2
 # G2 = different changes as G
 test_expect_success 'keep different-resolution merges with -p' '
-	git checkout branch1 &&
+	git checkout H &&
 	! git merge E &&
-	echo 23 > file1 &&
-	git add file1 &&
-	git commit -m L &&
-	git checkout branch2 &&
-	echo 4 > file1 &&
-	git commit -a -m G2 &&
+	test_commit L2 file1 23 &&
+	git checkout I &&
+	test_commit G3 file1 4 &&
 	! git merge E &&
-	echo 24 > file1 &&
-	git add file1 &&
-	git commit -m J &&
-	echo file7 > file7 &&
-	git add file7 &&
-	git commit -m K &&
-	! GIT_EDITOR=: git rebase -i -p branch1 &&
+	test_commit J2 file1 24 &&
+	test_commit K2 file7 file7 &&
+	test_must_fail git rebase -i -p L2 &&
 	echo 234 > file1 &&
 	git add file1 &&
-	GIT_EDITOR=: git rebase --continue &&
-	test $(git rev-parse branch2^^^) = $(git rev-parse branch1) &&
+	git rebase --continue &&
+	test $(git rev-parse HEAD^^^) = $(git rev-parse L2) &&
 	test "234" = "$(cat file1)" &&
-	test "" = "$(cat file6)" &&
-	test "file7" = "$(cat file7)" &&
-
-	git checkout branch1 &&
-	git reset --hard H &&
-	git checkout branch2 &&
-	git reset --hard I
+	test "I" = "$(cat file6)" &&
+	test "file7" = "$(cat file7)"
 '
 
 test_done