cherry-pick: add tests for new --ff option

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t3506-cherry-pick-ff.sh b/t/t3506-cherry-pick-ff.sh
new file mode 100755 (executable)
index 0000000..e17ae71
--- /dev/null
+++ b/t/t3506-cherry-pick-ff.sh
@@ -0,0 +1,98 @@
+#!/bin/sh
+
+test_description='test cherry-picking with --ff option'
+
+. ./test-lib.sh
+
+test_expect_success setup '
+       echo first > file1 &&
+       git add file1 &&
+       test_tick &&
+       git commit -m "first" &&
+       git tag first &&
+
+       git checkout -b other &&
+       echo second >> file1 &&
+       git add file1 &&
+       test_tick &&
+       git commit -m "second" &&
+       git tag second
+'
+
+test_expect_success 'cherry-pick using --ff fast forwards' '
+       git checkout master &&
+       git reset --hard first &&
+       test_tick &&
+       git cherry-pick --ff second &&
+       test "$(git rev-parse --verify HEAD)" = "$(git rev-parse --verify second)"
+'
+
+test_expect_success 'cherry-pick not using --ff does not fast forwards' '
+       git checkout master &&
+       git reset --hard first &&
+       test_tick &&
+       git cherry-pick second &&
+       test "$(git rev-parse --verify HEAD)" != "$(git rev-parse --verify second)"
+'
+
+#
+# We setup the following graph:
+#
+#            B---C
+#           /   /
+#      first---A
+#
+# (This has been taken from t3502-cherry-pick-merge.sh)
+#
+test_expect_success 'merge setup' '
+       git checkout master &&
+       git reset --hard first &&
+       echo new line >A &&
+       git add A &&
+       test_tick &&
+       git commit -m "add line to A" A &&
+       git tag A &&
+       git checkout -b side first &&
+       echo new line >B &&
+       git add B &&
+       test_tick &&
+       git commit -m "add line to B" B &&
+       git tag B &&
+       git checkout master &&
+       git merge side &&
+       git tag C &&
+       git checkout -b new A
+'
+
+test_expect_success 'cherry-pick a non-merge with --ff and -m should fail' '
+       git reset --hard A -- &&
+       test_must_fail git cherry-pick --ff -m 1 B &&
+       git diff --exit-code A --
+'
+
+test_expect_success 'cherry pick a merge with --ff but without -m should fail' '
+       git reset --hard A -- &&
+       test_must_fail git cherry-pick --ff C &&
+       git diff --exit-code A --
+'
+
+test_expect_success 'cherry pick with --ff a merge (1)' '
+       git reset --hard A -- &&
+       git cherry-pick --ff -m 1 C &&
+       git diff --exit-code C &&
+       test "$(git rev-parse --verify HEAD)" = "$(git rev-parse --verify C)"
+'
+
+test_expect_success 'cherry pick with --ff a merge (2)' '
+       git reset --hard B -- &&
+       git cherry-pick --ff -m 2 C &&
+       git diff --exit-code C &&
+       test "$(git rev-parse --verify HEAD)" = "$(git rev-parse --verify C)"
+'
+
+test_expect_success 'cherry pick a merge relative to nonexistent parent with --ff should fail' '
+       git reset --hard B -- &&
+       test_must_fail git cherry-pick --ff -m 3 C
+'
+
+test_done