1 files changed, 61 insertions, 0 deletions
diff --git a/meowpp_unittest/utility/state.cpp b/meowpp_unittest/utility/state.cpp
new file mode 100644
index 0000000..8b0e69e
--- /dev/null
+++ b/meowpp_unittest/utility/state.cpp
@@ -0,0 +1,61 @@
+#include <cstdio>
+#include <cstdlib>
+#include <cmath>
+
+#include <meowpp/debug/assert.h>
+#include <meowpp/utility/state.h>
+#include <meowpp/utility/state.h>
+#include <meowpp/utility/state.h>
+
+using namespace meow;
+
+class Func1State : public State {
+ public:
+  static const int SAME = 0;
+  static const int DIFF = 1;
+};
+
+State Func1(int a, int b) {
+  if (a == b) {
+    return Func1State::SAME;
+  } else {
+    return Func1State::DIFF;
+  }
+}
+
+const int kThreshold = 10;
+
+class Func2State : public Func1State {
+ public:
+  static const int NEAR = 2;
+  static const int FAR = 3;
+};
+
+State Func2(int a, int b) {
+  if (Func1(a, b) == Func1State::SAME) {
+    return Func1State::SAME;
+  } else {
+    if (abs(a - b) < kThreshold) {
+      return Func2State::NEAR;
+    } else {
+      return Func2State::FAR;
+    }
+  }
+}
+
+int main() {
+  Assert(Func1(3, 5) != Func1State::SAME, "");
+  Assert(Func1(3, 5) == Func1State::DIFF, "");
+  Assert(Func2(3, 3) == Func1State::SAME, "");
+  Assert(Func2(3, 3) == Func2State::SAME, "");
+  Assert(Func2(3, 1) == Func2State::NEAR, "");
+  Assert(Func2(15, 1) == Func2State::FAR, "");
+  State* st = dynamic_cast<State*>(Func2(15, 1).Copy());
+  State k;
+  k.CopyFrom(st);
+  Assert(k == Func2State::FAR, "");
+  Assert(k.Equals(st), "");
+  Assert(*st == Func2State::FAR, "");
+  delete st;
+  return 0;
+}