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-rw-r--r--t/helper/test-match-trees.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/t/helper/test-match-trees.c b/t/helper/test-match-trees.c
new file mode 100644
index 0000000000..4dad7095f1
--- /dev/null
+++ b/t/helper/test-match-trees.c
@@ -0,0 +1,26 @@
+#include "cache.h"
+#include "tree.h"
+
+int main(int ac, char **av)
+{
+ unsigned char hash1[20], hash2[20], shifted[20];
+ struct tree *one, *two;
+
+ setup_git_directory();
+
+ if (get_sha1(av[1], hash1))
+ die("cannot parse %s as an object name", av[1]);
+ if (get_sha1(av[2], hash2))
+ die("cannot parse %s as an object name", av[2]);
+ one = parse_tree_indirect(hash1);
+ if (!one)
+ die("not a tree-ish %s", av[1]);
+ two = parse_tree_indirect(hash2);
+ if (!two)
+ die("not a tree-ish %s", av[2]);
+
+ shift_tree(one->object.oid.hash, two->object.oid.hash, shifted, -1);
+ printf("shifted: %s\n", sha1_to_hex(shifted));
+
+ exit(0);
+}