Adding simple deterministic fuzz test for GameState.

test/testGame.cpp

@@ -1,2 +0,0 @@
-#include "PacMan.hpp"
-#include <gtest/gtest.h>

test/testGameState.cpp

@@ -0,0 +1,26 @@
+#include "GameState.hpp"
+#include <gtest/gtest.h>
+#include <fmt/format.h>
+
+TEST(GameStateTest, Fuzz) {
+  pacman::GameState gameState;
+  //fmt::print("{}\n", gameState.pellets.currentPositions().size());
+
+  int pacManDeathCount = 0;
+  bool canCountDeath = false;
+  for (std::size_t i = 0; i < 50000; ++i) {
+    gameState.inputState.up = i % 7 ? true : false;
+    gameState.inputState.down = i % 11 ? true : false;
+    gameState.inputState.left = i % 13 ? true : false;
+    gameState.inputState.right = i % 17 ? true : false;
+
+    canCountDeath = !gameState.isPacManDying();
+    gameState.step(std::chrono::milliseconds(1000 / 30));
+    if (canCountDeath && gameState.isPacManDying()) {
+      pacManDeathCount++;
+    }
+  }
+
+  //fmt::print("{}\n", pacManDeathCount);
+  //fmt::print("{}\n", gameState.pellets.currentPositions().size());
+}