Add the describe command

...which should, hopefully, show useful information about a particular
YANG node, such as the YANG-level description, the units, type info,
etc.

Change-Id: Id430ae58fe353124e5132fa5a69378e98932ebce
diff --git a/tests/command_completion.cpp b/tests/command_completion.cpp
index 1d44646..eb4949a 100644
--- a/tests/command_completion.cpp
+++ b/tests/command_completion.cpp
@@ -22,14 +22,14 @@
     SECTION("")
     {
         input = "";
-        expectedCompletions = {"cd", "create", "delete", "set", "commit", "get", "ls", "discard", "help"};
+        expectedCompletions = {"cd", "create", "delete", "set", "commit", "get", "ls", "discard", "help", "describe"};
         expectedContextLength = 0;
     }
 
     SECTION(" ")
     {
         input = " ";
-        expectedCompletions = {"cd", "create", "delete", "set", "commit", "get", "ls", "discard", "help"};
+        expectedCompletions = {"cd", "create", "delete", "set", "commit", "get", "ls", "discard", "help", "describe"};
         expectedContextLength = 0;
     }
 
@@ -43,7 +43,7 @@
     SECTION("d")
     {
         input = "d";
-        expectedCompletions = {"delete", "discard"};
+        expectedCompletions = {"delete", "discard", "describe"};
         expectedContextLength = 1;
     }
 
diff --git a/tests/example-schema.yang b/tests/example-schema.yang
index cbd5d8d..f876779 100644
--- a/tests/example-schema.yang
+++ b/tests/example-schema.yang
@@ -57,6 +57,7 @@
     }
 
     leaf leafDecimal {
+        units "nm";
         type decimal64 {
             fraction-digits 9;
         }