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-rw-r--r--extras/hs-test/README.rst15
1 files changed, 15 insertions, 0 deletions
diff --git a/extras/hs-test/README.rst b/extras/hs-test/README.rst
index 2caa65d7a83..6db832b7fbe 100644
--- a/extras/hs-test/README.rst
+++ b/extras/hs-test/README.rst
@@ -195,6 +195,21 @@ test run time it is not advisable to use aforementioned skip methods and instead
func (s *MySuite) SkipTest(){
+**Debugging a test**
+
+It is possible to debug VPP by attaching ``gdb`` before test execution by adding ``DEBUG=true`` like follows:
+
+::
+
+ $ make test TEST=TestVeths/TestLDPreloadIperfVpp DEBUG=true
+ ...
+ run following command in different terminal:
+ docker exec -it server-vpp gdb -ex "attach $(docker exec server-vpp pidof vpp)"
+ Afterwards press CTRL+C to continue
+
+If a test consists of more VPP instances then this is done for each of them.
+
+
**Eternal dependencies**
* Linux tools ``ip``, ``brctl``