Error running ctest. Did not set env-var WASP_TEST!

[rkanavath]

test 1
    Start 1: test_MuscateMetadataHelper

1: Test command: /home/rkm/wasp/build/Common/test/test_MuscateMetadataHelper
1: Test timeout computed to be: 1500
1: Running 4 test cases...
1: /home/rkm/wasp/wasp/Common/test/test_MuscateMetadataHelper.cpp(73): fatal error: in "TestGetFilenameByString": Did not set env-var WASP_TEST!
1: /home/rkm/wasp/wasp/Common/test/test_MuscateMetadataHelper.cpp(91): fatal error: in "TestLoadMetadata_S2A_T32MNE": Did not set env-var WASP_TEST!
1: /home/rkm/wasp/wasp/Common/test/test_MuscateMetadataHelper.cpp(130): fatal error: in "TestLoadMetadata_S2A_T31TCH": Did not set env-var WASP_TEST!
1: /home/rkm/wasp/wasp/Common/test/test_MuscateMetadataHelper.cpp(169): fatal error: in "TestLoadMetadata_S2B_T31TCH": Did not set env-var WASP_TEST!
1:
1: *** 4 failures are detected in the test module "MuscateWriter"
1/2 Test #1: test_MuscateMetadataHelper ........***Failed    0.05 sec

How to download WASP_TEST required for ctest execution?