Introduce git_rebase_next

`git_rebase_next` will apply the next patch (or cherry-pick)
operation, leaving the results checked out in the index / working
directory so that consumers can resolve any conflicts, as appropriate.

1 files changed, 59 insertions, 0 deletions

diff --git a/tests/rebase/merge.c b/tests/rebase/merge.c
new file mode 100644
index 000000000..e44fdd3f6
--- /dev/null
+++ b/tests/rebase/merge.c
@@ -0,0 +1,59 @@
+#include "clar_libgit2.h"
+#include "git2/rebase.h"
+#include "posix.h"
+
+#include <fcntl.h>
+
+static git_repository *repo;
+static git_signature *signature;
+
+// Fixture setup and teardown
+void test_rebase_merge__initialize(void)
+{
+	repo = cl_git_sandbox_init("rebase");
+}
+
+void test_rebase_merge__cleanup(void)
+{
+	cl_git_sandbox_cleanup();
+}
+
+void test_rebase_merge__next(void)
+{
+	git_reference *branch_ref, *upstream_ref;
+	git_merge_head *branch_head, *upstream_head;
+	git_checkout_options checkout_opts = GIT_CHECKOUT_OPTIONS_INIT;
+	git_status_list *status_list;
+	const git_status_entry *status_entry;
+	git_oid file1_id;
+
+	checkout_opts.checkout_strategy = GIT_CHECKOUT_SAFE;
+
+	cl_git_pass(git_reference_lookup(&branch_ref, repo, "refs/heads/beef"));
+	cl_git_pass(git_reference_lookup(&upstream_ref, repo, "refs/heads/master"));
+
+	cl_git_pass(git_merge_head_from_ref(&branch_head, repo, branch_ref));
+	cl_git_pass(git_merge_head_from_ref(&upstream_head, repo, upstream_ref));
+
+	cl_git_pass(git_rebase(repo, branch_head, upstream_head, NULL, signature, NULL));
+
+	cl_git_pass(git_rebase_next(repo, &checkout_opts));
+
+	cl_assert_equal_file("da9c51a23d02d931a486f45ad18cda05cf5d2b94\n", 41, "rebase/.git/rebase-merge/current");
+	cl_assert_equal_file("1\n", 2, "rebase/.git/rebase-merge/msgnum");
+
+	cl_git_pass(git_status_list_new(&status_list, repo, NULL));
+	cl_assert_equal_i(1, git_status_list_entrycount(status_list));
+	cl_assert(status_entry = git_status_byindex(status_list, 0));
+
+	cl_assert_equal_s("beef.txt", status_entry->head_to_index->new_file.path);
+
+	git_oid_fromstr(&file1_id, "8d95ea62e621f1d38d230d9e7d206e41096d76af");
+	cl_assert_equal_oid(&file1_id, &status_entry->head_to_index->new_file.id);
+
+	git_status_list_free(status_list);
+	git_merge_head_free(branch_head);
+	git_merge_head_free(upstream_head);
+	git_reference_free(branch_ref);
+	git_reference_free(upstream_ref);
+}