Implement Branch.is_head.

src/branch.c

@@ -57,8 +57,31 @@ Branch_delete(Branch *self, PyObject *args)
 }
 
 
+PyDoc_STRVAR(Branch_is_head__doc__,
+  "is_head()\n"
+  "\n"
+  "True if HEAD points at the branch, False otherwise.");
+
+PyObject *
+Branch_is_head(Branch *self)
+{
+    int err;
+
+    CHECK_REFERENCE(self);
+
+    err = git_branch_is_head(self->reference);
+    if (err == 1)
+        Py_RETURN_TRUE;
+    else if (err == 0)
+        Py_RETURN_FALSE;
+    else
+        return Error_set(err);
+}
+
+
 PyMethodDef Branch_methods[] = {
     METHOD(Branch, delete, METH_NOARGS),
+    METHOD(Branch, is_head, METH_NOARGS),
     {NULL}
 };
 

src/branch.h

@@ -33,6 +33,7 @@
 #include <git2.h>
 
 PyObject* Branch_delete(Branch *self, PyObject *args);
+PyObject* Branch_is_head(Branch *self);
 
 PyObject* wrap_branch(git_reference *c_reference, Repository *repo);
 

test/test_branch.py

@@ -79,6 +79,14 @@ class BranchesTestCase(utils.RepoTestCase):
 
         self.assertRaises(pygit2.GitError, lambda: branch.delete())
 
+    def test_branch_is_head_returns_true_if_branch_is_head(self):
+        branch = self.repo.lookup_branch('master')
+        self.assertTrue(branch.is_head())
+
+    def test_branch_is_head_returns_false_if_branch_is_not_head(self):
+        branch = self.repo.lookup_branch('i18n')
+        self.assertFalse(branch.is_head())
+
 
 class BranchesEmptyRepoTestCase(utils.EmptyRepoTestCase):
     def setUp(self):