tests: implement worktree helpers

tests/worktree/worktree_helpers.c

+#include "clar_libgit2.h"
+#include "worktree_helpers.h"
+
+void cleanup_fixture_worktree(worktree_fixture *fixture)
+{
+	if (!fixture)
+		return;
+
+	if (fixture->repo) {
+		git_repository_free(fixture->repo);
+		fixture->repo = NULL;
+	}
+	if (fixture->worktree) {
+		git_repository_free(fixture->worktree);
+		fixture->worktree = NULL;
+	}
+
+	if (fixture->reponame)
+		cl_fixture_cleanup(fixture->reponame);
+	if (fixture->worktreename)
+		cl_fixture_cleanup(fixture->worktreename);
+}
+
+void setup_fixture_worktree(worktree_fixture *fixture)
+{
+	if (fixture->reponame)
+		fixture->repo = cl_git_sandbox_init(fixture->reponame);
+	if (fixture->worktreename)
+		fixture->worktree = cl_git_sandbox_init(fixture->worktreename);
+}

tests/worktree/worktree_helpers.h

+typedef struct {
+	const char *reponame;
+	const char *worktreename;
+	git_repository *repo;
+	git_repository *worktree;
+} worktree_fixture;
+
+#define WORKTREE_FIXTURE_INIT(repo, worktree) { (repo), (worktree), NULL, NULL }
+
+void cleanup_fixture_worktree(worktree_fixture *fixture);
+void setup_fixture_worktree(worktree_fixture *fixture);