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SimMock

SimMock and CMocka Testing for Model Developers

The DSE ModelC Library includes a SimMock source code library which may be used to develop integration tests for Models. With the SimMock library, a Model Developer is able to easily develop CMocka Testcases which:

  • Validate a model configuration and confirm the Models operation.
  • Develop scenarios where expected signal exchange is verified.
  • Inject network messages into the simulation or model (e.g. CAN frames) and read network messages.
  • Check expected values for both scalars (Signals) and messages (Network).
  • Stack several Model Instances within one SimMock and confirm their interoperation.

ModelC Shared Library Stub

When testing models directly with the SimMock it may be necessary to use a stub of the modelc.so library. The following integrations are required:

tests/cmocka/Makefile 
export LD_LIBRARY_PATH=$(shell pwd)/build/_out/lib
tests/cmocka/CMakeLists.txt 
# Target - ModelC Stub
# --------------------
add_library(modelc_stub SHARED
    ${DSE_MOCKS_SOURCE_DIR}/modelc_stub.c
)
set_target_properties(modelc_stub
    PROPERTIES
        OUTPUT_NAME modelc
)
install(TARGETS modelc_stub)

Example Test Files

network/test_network.c {{< readfile file="../../../examples/modelc/mocks/network/test_network.c" code="true" lang="c" >}}

References and Further Reading