Add integration test. Run with ./gradlew runIntegrationTest

src/integration-test/java/com/replaymod/replay/SpectatePlayer.java

@@ -0,0 +1,42 @@
+package com.replaymod.replay;
+
+import com.replaymod.core.AbstractTask;
+import com.replaymod.extras.playeroverview.PlayerOverviewGui;
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent;
+import net.minecraftforge.fml.common.gameevent.TickEvent;
+import org.lwjgl.input.Keyboard;
+
+import java.util.concurrent.TimeoutException;
+
+public class SpectatePlayer extends AbstractTask {
+    @Override
+    protected void init() {
+        press(Keyboard.KEY_B);
+        expectGui(PlayerOverviewGui.class, overview -> {
+            click(overview.getMaxSize().getWidth() / 2 - 60, 60);
+            press(Keyboard.KEY_ESCAPE);
+            expectGuiClosed(() -> future.set(null));
+        });
+    }
+
+    public static class End extends AbstractTask {
+        private int timeout;
+
+        @Override
+        protected void init() {
+            runLater(() -> press(Keyboard.KEY_LSHIFT));
+        }
+
+        @SubscribeEvent
+        public void onTick(TickEvent.RenderTickEvent event) {
+            if (event.phase != TickEvent.Phase.START) return;
+            if (timeout++ > 20) {
+                future.setException(new TimeoutException("Camera hasn't stopped spectating."));
+                return;
+            }
+            if (mc.getRenderViewEntity() == mc.thePlayer) {
+                future.set(null);
+            }
+        }
+    }
+}