Allow going up with ".." when in root

Issue: https://tree.taiga.io/project/jktjkt-netconf-cli/issue/176
Change-Id: I23797edf159d39efe4e58b1d7c560aa3c13117b3
diff --git a/tests/cd.cpp b/tests/cd.cpp
index f85593b..e0d6293 100644
--- a/tests/cd.cpp
+++ b/tests/cd.cpp
@@ -136,6 +136,19 @@
 
         SECTION("moving up")
         {
+            SECTION("moving up when already in root")
+            {
+                input = "cd ..";
+                expected.m_path.m_nodes.push_back(dataNode_(nodeup_()));
+            }
+
+            SECTION("moving up TWICE when already in root")
+            {
+                input = "cd ../..";
+                expected.m_path.m_nodes.push_back(dataNode_(nodeup_()));
+                expected.m_path.m_nodes.push_back(dataNode_(nodeup_()));
+            }
+
             SECTION("example:a/..")
             {
                 input = "cd example:a/..";