1 files changed, 46 insertions, 0 deletions
diff --git a/tests/index/read_tree.c b/tests/index/read_tree.c
new file mode 100644
index 000000000..6c6b40121
--- /dev/null
+++ b/tests/index/read_tree.c
@@ -0,0 +1,46 @@
+#include "clar_libgit2.h"
+#include "posix.h"
+
+/* Test that reading and writing a tree is a no-op */
+void test_index_read_tree__read_write_involution(void)
+{
+	git_repository *repo;
+	git_index *index;
+	git_oid tree_oid;
+	git_tree *tree;
+	git_oid expected;
+
+	p_mkdir("read_tree", 0700);
+
+	cl_git_pass(git_repository_init(&repo, "./read_tree", 0));
+	cl_git_pass(git_repository_index(&index, repo));
+
+	cl_assert(git_index_entrycount(index) == 0);
+
+	p_mkdir("./read_tree/abc", 0700);
+
+	/* Sort order: '-' < '/' < '_' */
+	cl_git_mkfile("./read_tree/abc-d", NULL);
+	cl_git_mkfile("./read_tree/abc/d", NULL);
+	cl_git_mkfile("./read_tree/abc_d", NULL);
+
+	cl_git_pass(git_index_add_bypath(index, "abc-d"));
+	cl_git_pass(git_index_add_bypath(index, "abc_d"));
+	cl_git_pass(git_index_add_bypath(index, "abc/d"));
+
+	/* write-tree */
+	cl_git_pass(git_index_write_tree(&expected, index));
+
+	/* read-tree */
+	git_tree_lookup(&tree, repo, &expected);
+	cl_git_pass(git_index_read_tree(index, tree));
+	git_tree_free(tree);
+
+	cl_git_pass(git_index_write_tree(&tree_oid, index));
+	cl_assert(git_oid_cmp(&expected, &tree_oid) == 0);
+
+	git_index_free(index);
+	git_repository_free(repo);
+
+	cl_fixture_cleanup("read_tree");
+}