how to run a single bcState test?

[pirapira]

I see an error env not set! when I try to run a single bcStateTest.

$ ETHEREUM_TEST_PATH="../../tests" test/testeth -t BlockchainTests -- --singletest '../../tests/BlockchainTests/GeneralStateTests/stExample/add11_d0g0v0.json' 'add11_d0g0v0_Byzantium' --vmtrace --verbosity 3
Test Case "customTestSuite": 
  ℹ  10:49:11.926|testeth  add11_d0g0v0_Byzantium
/home/yh/src/testeth/test/tools/jsontests/StateTests.cpp(69): fatal error: in "customTestSuite/customTestSuite": add11_d0g0v0_Byzantium env not set!

*** 1 failure is detected (7 failures are expected) in the test module "Master Test Suite"