thodg/libgit2

diff --git a/tests/resources/redundant.git/HEAD b/tests/resources/redundant.git/HEAD
new file mode 100644
index 0000000..cb089cd
--- /dev/null
+++ b/tests/resources/redundant.git/HEAD
@@ -0,0 +1 @@
+ref: refs/heads/master
diff --git a/tests/resources/redundant.git/config b/tests/resources/redundant.git/config
new file mode 100755
index 0000000..2f89580
--- /dev/null
+++ b/tests/resources/redundant.git/config
@@ -0,0 +1,5 @@
+[core]
+        repositoryformatversion = 0
+        filemode = true
+        bare = true
+        logallrefupdates = true
diff --git a/tests/resources/redundant.git/objects/info/packs b/tests/resources/redundant.git/objects/info/packs
new file mode 100644
index 0000000..fbf960f
--- /dev/null
+++ b/tests/resources/redundant.git/objects/info/packs
@@ -0,0 +1,2 @@
+P pack-3d944c0c5bcb6b16209af847052c6ff1a521529d.pack
+
diff --git a/tests/resources/redundant.git/objects/pack/pack-3d944c0c5bcb6b16209af847052c6ff1a521529d.idx b/tests/resources/redundant.git/objects/pack/pack-3d944c0c5bcb6b16209af847052c6ff1a521529d.idx
new file mode 100644
index 0000000..d8e099a
Binary files /dev/null and b/tests/resources/redundant.git/objects/pack/pack-3d944c0c5bcb6b16209af847052c6ff1a521529d.idx differ
diff --git a/tests/resources/redundant.git/objects/pack/pack-3d944c0c5bcb6b16209af847052c6ff1a521529d.pack b/tests/resources/redundant.git/objects/pack/pack-3d944c0c5bcb6b16209af847052c6ff1a521529d.pack
new file mode 100644
index 0000000..02ea49f
Binary files /dev/null and b/tests/resources/redundant.git/objects/pack/pack-3d944c0c5bcb6b16209af847052c6ff1a521529d.pack differ
diff --git a/tests/resources/redundant.git/packed-refs b/tests/resources/redundant.git/packed-refs
new file mode 100644
index 0000000..e8bf04d
--- /dev/null
+++ b/tests/resources/redundant.git/packed-refs
@@ -0,0 +1,3 @@
+# pack-refs with: peeled fully-peeled 
+e18fa2788e9c4e12d83150808a31dfbfb1ae364f refs/heads/master
+91f4b95df4a59504a9813ba66912562931d990e3 refs/heads/ref2/ref28
diff --git a/tests/resources/redundant.git/refs/.gitkeep b/tests/resources/redundant.git/refs/.gitkeep
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/tests/resources/redundant.git/refs/.gitkeep
diff --git a/tests/revwalk/mergebase.c b/tests/revwalk/mergebase.c
index aafe97d..d486bba 100644
--- a/tests/revwalk/mergebase.c
+++ b/tests/revwalk/mergebase.c
@@ -492,3 +492,22 @@ void test_revwalk_mergebase__octopus_merge_branch(void)
  *
  *       a
  */
+
+void test_revwalk_mergebase__remove_redundant(void)
+{
+	git_repository *repo;
+	git_oid one, two, base;
+	git_oidarray result = {NULL, 0};
+
+	cl_git_pass(git_repository_open(&repo, cl_fixture("redundant.git")));
+
+	cl_git_pass(git_oid_fromstr(&one, "d89137c93ba1ee749214ff4ce52ae9137bc833f9"));
+	cl_git_pass(git_oid_fromstr(&two, "91f4b95df4a59504a9813ba66912562931d990e3"));
+	cl_git_pass(git_oid_fromstr(&base, "6cb1f2352d974e1c5a776093017e8772416ac97a"));
+
+	cl_git_pass(git_merge_bases(&result, repo, &one, &two));
+	cl_assert_equal_i(1, result.count);
+	cl_assert_equal_oid(&base, &result.ids[0]);
+
+	git_repository_free(repo);
+}