tests: extend find-omnetpp test suite

tests/TestSuiteHelpers.cmake

@@ -17,3 +17,9 @@ macro(expect_strequal expected actual)
         message(FATAL_ERROR "Expected ${actual} to equal \"${expected}\", but it is \"${${actual}}\"")
     endif()
 endmacro()
+
+macro(expect_target target)
+    if(NOT TARGET ${target})
+        message(FATAL_ERROR "expect_target: target ${target} does not exist")
+    endif()
+endmacro()

tests/find-omnetpp/CMakeLists.txt

@@ -8,3 +8,23 @@ find_package(OmnetPP REQUIRED)
 require_envvar(EXPECTED_OMNETPP_ROOT EXPECTED_OMNETPP_VERSION)
 expect_strequal($ENV{EXPECTED_OMNETPP_ROOT} OMNETPP_ROOT)
 expect_strequal($ENV{EXPECTED_OMNETPP_VERSION} OMNETPP_VERSION)
+
+expect_target(OmnetPP::cmdenv)
+expect_target(OmnetPP::common)
+expect_target(OmnetPP::envir)
+expect_target(OmnetPP::eventlog)
+expect_target(OmnetPP::header)
+expect_target(OmnetPP::layout)
+expect_target(OmnetPP::main)
+expect_target(OmnetPP::nedxml)
+expect_target(OmnetPP::scave)
+expect_target(OmnetPP::sim)
+expect_target(OmnetPP::tkenv)
+
+get_property(opp_include_dirs TARGET OmnetPP::header PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
+set(opp_include_dirs_expected $ENV{EXPECTED_OMNETPP_ROOT}/include)
+if(NOT opp_include_dirs STREQUAL opp_include_dirs_expected)
+    message(FATAL_ERROR "OMNeT++ include directory is incorrect:
+        expected: ${opp_include_dirs_expected}
+        actual: ${opp_include_dirs}")
+endif()