Add function gitflow_require_branches_equal() to test whether local and remote branches have diverged.
diff --git a/test-sh-setup b/test-sh-setup
index ad7126c..1c69056 100755
--- a/test-sh-setup
+++ b/test-sh-setup
@@ -6,4 +6,8 @@
gitflow_require_branch 'origin/develop'
gitflow_require_branch 'origin/master'
+gitflow_require_branches_equal 'master' 'origin/master'
+gitflow_require_branches_equal 'develop' 'origin/develop'
+gitflow_require_branches_equal 'rebase-not-merge' 'truemped/rebase-not-merge'
+
echo "All OK."