[dts] [PATCH 1/6] framework/tester: Fix NoneType Error of port_map

[Michael Qiu]

File "./framework/tester.py", line 110, in tester_prerequisites
    assert len(self.ports_map) > 0
TypeError: object of type 'NoneType' has no len()

Currently ports_map is initialized with empty list,
but it could be overridden by 'None' value.

This patch solves this issue

Signed-off-by: Michael Qiu <michael.qiu at intel.com>
---
 framework/tester.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/framework/tester.py b/framework/tester.py
index 2c023dd..d69503a 100644
--- a/framework/tester.py
+++ b/framework/tester.py
@@ -125,7 +125,8 @@ class Tester(Crb):
         self.restore_interfaces()
         self.scan_ports()
         self.map_available_ports()
-        assert len(self.ports_map) > 0
+        if self.ports_map == None or len(self.ports_map) == 0:
+            raise ValueError("ports_map should not be empty, please check all links")
 
     def get_local_port(self, remotePort):
         """
-- 
1.9.3