Fix bugs and write unit tests for SelfResolvable.

1 files changed, 76 insertions, 0 deletions

diff --git a/test/common/SelfResolvableTest.cpp b/test/common/SelfResolvableTest.cpp
new file mode 100644
index 00000000..3664a223
--- /dev/null
+++ b/test/common/SelfResolvableTest.cpp
@@ -0,0 +1,76 @@
+#include "cru/common/Base.h"
+#include "cru/common/SelfResolvable.h"
+
+#include <catch2/catch_test_macros.hpp>
+
+#include <memory>
+
+namespace {
+class SelfResolvableTestClass
+    : public cru::SelfResolvable<SelfResolvableTestClass> {
+ public:
+  SelfResolvableTestClass() : ptr_(new int(123)) {}
+  CRU_DELETE_COPY(SelfResolvableTestClass)
+  CRU_DEFAULT_MOVE(SelfResolvableTestClass)
+  ~SelfResolvableTestClass() = default;
+
+ private:
+  std::shared_ptr<int> ptr_;
+};
+}  // namespace
+
+TEST_CASE("SelfResolvable resolver should work.", "[self-resolvable]") {
+  SelfResolvableTestClass test_object;
+
+  auto resolver = test_object.CreateResolver();
+  REQUIRE(resolver.Resolve() == &test_object);
+
+  auto resolver_copy = resolver;
+  REQUIRE(resolver.Resolve() == &test_object);
+  REQUIRE(resolver.Resolve() == &test_object);
+
+  auto resolver_move = std::move(resolver_copy);
+  REQUIRE(resolver.Resolve() == &test_object);
+  REQUIRE(resolver_copy.IsValid() == false);
+  REQUIRE(resolver_move.Resolve() == &test_object);
+}
+
+TEST_CASE("SelfResolvable object destructed should work.",
+          "[self-resolvable]") {
+  SelfResolvableTestClass* test_object = new SelfResolvableTestClass();
+
+  auto resolver = test_object->CreateResolver();
+  auto resolver_copy = resolver;
+
+  delete test_object;
+
+  REQUIRE(resolver.Resolve() == nullptr);
+  REQUIRE(resolver_copy.Resolve() == nullptr);
+
+  auto resolver_copy2 = resolver_copy;
+  REQUIRE(resolver_copy2.Resolve() == nullptr);
+
+  auto resolver_move = std::move(resolver_copy);
+  REQUIRE(resolver_copy.IsValid() == false);
+  REQUIRE(resolver_move.Resolve() == nullptr);
+}
+
+TEST_CASE("SelfResolvable object moved should work.", "[self-resolvable]") {
+  SelfResolvableTestClass test_object;
+
+  auto resolver = test_object.CreateResolver();
+  auto resolver_copy = resolver;
+
+  SelfResolvableTestClass moved_object = std::move(test_object);
+
+  REQUIRE(resolver.Resolve() == &moved_object);
+  REQUIRE(resolver_copy.Resolve() == &moved_object);
+
+  auto resolver_copy2 = resolver_copy;
+  REQUIRE(resolver_copy2.Resolve() == &moved_object);
+
+  auto resolver_move = std::move(resolver_copy);
+  REQUIRE(resolver_copy.IsValid() == false);
+  REQUIRE(resolver_move.Resolve() == &moved_object);
+}
+