Add basic test cases for `Type::GetConfigTypesSortedByLoadDependencies()`

test/CMakeLists.txt

@@ -2,6 +2,59 @@
 
 include(BoostTestTargets)
 
+set(types_test_SOURCES
+  icingaapplication-fixture.cpp
+  base-type.cpp
+  ${base_OBJS}
+  $<TARGET_OBJECTS:config>
+  $<TARGET_OBJECTS:remote>
+  $<TARGET_OBJECTS:icinga>
+  $<TARGET_OBJECTS:methods>
+)
+
+if(ICINGA2_WITH_CHECKER)
+  list(APPEND types_test_SOURCES $<TARGET_OBJECTS:checker>)
+endif()
+
+if(ICINGA2_WITH_MYSQL)
+  list(APPEND types_test_SOURCES $<TARGET_OBJECTS:db_ido> $<TARGET_OBJECTS:db_ido_mysql>)
+endif()
+
+if(ICINGA2_WITH_PGSQL)
+  list(APPEND types_test_SOURCES $<TARGET_OBJECTS:db_ido> $<TARGET_OBJECTS:db_ido_pgsql>)
+endif()
+
+if(ICINGA2_WITH_ICINGADB)
+  list(APPEND types_test_SOURCES $<TARGET_OBJECTS:icingadb>)
+endif()
+
+if(ICINGA2_WITH_NOTIFICATION)
+  list(APPEND types_test_SOURCES $<TARGET_OBJECTS:notification>)
+endif()
+
+if(ICINGA2_WITH_PERFDATA)
+  list(APPEND types_test_SOURCES $<TARGET_OBJECTS:perfdata>)
+endif()
+
+if(ICINGA2_UNITY_BUILD)
+  mkunity_target(types test types_test_SOURCES)
+endif()
+
+# In order to test the order of all Icinga 2 config type load dependencies, we need to link against all the libraries,
+# but this results in boost signals e.g. in dbevents.cpp being triggered by icinga-checkresult.cpp test cases that
+# only pass partially initialised objects. Therefore, the types test cases are decoupled from base and moved to a
+# separate executable to not crash the base test cases.
+add_boost_test(types
+  SOURCES test-runner.cpp ${types_test_SOURCES}
+  LIBRARIES ${base_DEPS}
+  TESTS
+    types/gettype
+    types/assign
+    types/byname
+    types/instantiate
+    types/sort_by_load_after
+)
+
 set(base_test_SOURCES
   icingaapplication-fixture.cpp
   base-array.cpp
@@ -21,7 +74,6 @@ set(base_test_SOURCES
   base-string.cpp
   base-timer.cpp
   base-tlsutility.cpp
-  base-type.cpp
   base-utility.cpp
   base-value.cpp
   config-apply.cpp
@@ -117,10 +169,6 @@ add_boost_test(base
     base_tlsutility/iscertuptodate_ok
     base_tlsutility/iscertuptodate_expiring
     base_tlsutility/iscertuptodate_old
-    base_type/gettype
-    base_type/assign
-    base_type/byname
-    base_type/instantiate
     base_utility/parse_version
     base_utility/compare_version
     base_utility/comparepasswords_works

test/base-type.cpp

@@ -5,11 +5,13 @@
 #include "base/objectlock.hpp"
 #include "base/application.hpp"
 #include "base/type.hpp"
+#include "icinga/host.hpp"
+#include "icinga/service.hpp"
 #include <BoostTestTargetConfig.h>
 
 using namespace icinga;
 
-BOOST_AUTO_TEST_SUITE(base_type)
+BOOST_AUTO_TEST_SUITE(types)
 
 BOOST_AUTO_TEST_CASE(gettype)
 {
@@ -44,4 +46,33 @@ BOOST_AUTO_TEST_CASE(instantiate)
 	BOOST_CHECK(p);
 }
 
+BOOST_AUTO_TEST_CASE(sort_by_load_after)
+{
+	int totalDependencies{0};
+	std::unordered_set<Type*> previousTypes;
+	for (auto type : Type::GetConfigTypesSortedByLoadDependencies()) {
+		BOOST_CHECK_EQUAL(true, ConfigObject::TypeInstance->IsAssignableFrom(type));
+
+		totalDependencies += type->GetLoadDependencies().size();
+		for (Type* dependency : type->GetLoadDependencies()) {
+			// Note, Type::GetConfigTypesSortedByLoadDependencies() does not detect any cyclic load dependencies,
+			// instead, it relies on this test case to fail.
+			BOOST_CHECK_MESSAGE(previousTypes.find(dependency) != previousTypes.end(), "type '" << type->GetName()
+				<< "' depends on '"<< dependency->GetName() << "' type, but it's not loaded before");
+		}
+
+		previousTypes.emplace(type.get());
+	}
+
+	// The magic number 12 is the sum of host,service,comment,downtime and endpoint load_after dependencies.
+	BOOST_CHECK_MESSAGE(totalDependencies >= 12, "total size of load dependency must be at least 12");
+	BOOST_CHECK_MESSAGE(previousTypes.find(Host::TypeInstance.get()) != previousTypes.end(), "Host type should be in the list");
+	BOOST_CHECK_MESSAGE(previousTypes.find(Service::TypeInstance.get()) != previousTypes.end(), "Service type should be in the list");
+	BOOST_CHECK_MESSAGE(previousTypes.find(Downtime::TypeInstance.get()) != previousTypes.end(), "Downtime type should be in the list");
+	BOOST_CHECK_MESSAGE(previousTypes.find(Comment::TypeInstance.get()) != previousTypes.end(), "Comment type should be in the list");
+	BOOST_CHECK_MESSAGE(previousTypes.find(Notification::TypeInstance.get()) != previousTypes.end(), "Notification type should be in the list");
+	BOOST_CHECK_MESSAGE(previousTypes.find(Zone::TypeInstance.get()) != previousTypes.end(), "Zone type should be in the list");
+	BOOST_CHECK_MESSAGE(previousTypes.find(Endpoint::TypeInstance.get()) != previousTypes.end(), "Endpoint type should be in the list");
+}
+
 BOOST_AUTO_TEST_SUITE_END()