Document prerequisites for diag test
Change-Id: Ibbabebb5516cd5ff9b2df78297ebe54a844d1184
(cherry picked from commit 099119666e6f5d8835db2d3b025de5f41f1e7d5b)
diff --git a/src/test/diag/verifyCollectDiag.robot b/src/test/diag/verifyCollectDiag.robot
index 6254b9e..ca3408f 100644
--- a/src/test/diag/verifyCollectDiag.robot
+++ b/src/test/diag/verifyCollectDiag.robot
@@ -12,6 +12,8 @@
# See the License for the specific language governing permissions and
# limitations under the License.
+# NOTE: `make collect-diag` command needs to be executed on the head-node
+# before running this test
*** Settings ***
Documentation Test suite for checking results collected by `make collect-diag` command