1 files changed, 101 insertions, 0 deletions
diff --git a/test/icinga-dependencies.cpp b/test/icinga-dependencies.cpp
new file mode 100644
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+++ b/test/icinga-dependencies.cpp
@@ -0,0 +1,101 @@
+/* Icinga 2 | (c) 2020 Icinga GmbH | GPLv2+ */
+
+#include "icinga/host.hpp"
+#include "icinga/dependency.hpp"
+#include <BoostTestTargetConfig.h>
+#include <iostream>
+
+using namespace icinga;
+
+BOOST_AUTO_TEST_SUITE(icinga_dependencies)
+
+BOOST_AUTO_TEST_CASE(multi_parent)
+{
+	/* One child host, two parent hosts. Simulate multi-parent dependencies. */
+	std::cout << "Testing reachability for multi parent dependencies." << std::endl;
+
+	/*
+	 * Our mock requires:
+	 * - SetParent/SetChild functions for the dependency
+	 * - Parent objects need a CheckResult object
+	 * - Dependencies need a StateFilter
+	 */
+	Host::Ptr parentHost1 = new Host();
+	parentHost1->SetActive(true);
+	parentHost1->SetMaxCheckAttempts(1);
+	parentHost1->Activate();
+	parentHost1->SetAuthority(true);
+	parentHost1->SetStateRaw(ServiceCritical);
+	parentHost1->SetStateType(StateTypeHard);
+	parentHost1->SetLastCheckResult(new CheckResult());
+
+	Host::Ptr parentHost2 = new Host();
+	parentHost2->SetActive(true);
+	parentHost2->SetMaxCheckAttempts(1);
+	parentHost2->Activate();
+	parentHost2->SetAuthority(true);
+	parentHost2->SetStateRaw(ServiceOK);
+	parentHost2->SetStateType(StateTypeHard);
+	parentHost2->SetLastCheckResult(new CheckResult());
+
+	Host::Ptr childHost = new Host();
+	childHost->SetActive(true);
+	childHost->SetMaxCheckAttempts(1);
+	childHost->Activate();
+	childHost->SetAuthority(true);
+	childHost->SetStateRaw(ServiceOK);
+	childHost->SetStateType(StateTypeHard);
+
+	/* Build the dependency tree. */
+	Dependency::Ptr dep1 = new Dependency();
+
+	dep1->SetParent(parentHost1);
+	dep1->SetChild(childHost);
+	dep1->SetStateFilter(StateFilterUp);
+
+	// Reverse dependencies
+        childHost->AddDependency(dep1);
+        parentHost1->AddReverseDependency(dep1);
+
+	Dependency::Ptr dep2 = new Dependency();
+
+	dep2->SetParent(parentHost2);
+	dep2->SetChild(childHost);
+	dep2->SetStateFilter(StateFilterUp);
+
+	// Reverse dependencies
+        childHost->AddDependency(dep2);
+        parentHost2->AddReverseDependency(dep2);
+
+
+	/* Test the reachability from this point.
+	 * parentHost1 is DOWN, parentHost2 is UP.
+	 * Expected result: childHost is unreachable.
+	 */
+	parentHost1->SetStateRaw(ServiceCritical); // parent Host 1 DOWN
+	parentHost2->SetStateRaw(ServiceOK);       // parent Host 2 UP
+
+	BOOST_CHECK(childHost->IsReachable() == false);
+
+	/* The only DNS server is DOWN.
+	 * Expected result: childHost is unreachable.
+	 */
+	dep1->SetRedundancyGroup("DNS");
+	BOOST_CHECK(childHost->IsReachable() == false);
+
+	/* 1/2 DNS servers is DOWN.
+	 * Expected result: childHost is reachable.
+	 */
+	dep2->SetRedundancyGroup("DNS");
+	BOOST_CHECK(childHost->IsReachable() == true);
+
+	/* Both DNS servers are DOWN.
+	 * Expected result: childHost is unreachable.
+	 */
+	parentHost1->SetStateRaw(ServiceCritical); // parent Host 1 DOWN
+	parentHost2->SetStateRaw(ServiceCritical); // parent Host 2 DOWN
+
+	BOOST_CHECK(childHost->IsReachable() == false);
+}
+
+BOOST_AUTO_TEST_SUITE_END()