JavaAdventureRepo/test/cz/davza/studentadventure/TestHelpers.java

package cz.davza.studentadventure;

import cz.davza.studentadventure.base.CommandBase;
import cz.davza.studentadventure.interfaces.IOutputSink;
import cz.davza.studentadventure.managers.CommandManager;
import cz.davza.studentadventure.objects.*;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;

/**
 * Shared test utilities.
 */
public class TestHelpers {

    /** Captures all writeLine calls for assertion. */
    public static class CapturingOutputSink implements IOutputSink {
        private final StringBuilder buffer = new StringBuilder();
        @Override public void writeLine(String line) { buffer.append(line).append("\n"); }
        @Override public void buffer(String text) {}
        @Override public void flush() {}
        public String getOutput()              { return buffer.toString(); }
        public void clear()                    { buffer.setLength(0); }
        public boolean contains(String text)   { return buffer.toString().contains(text); }
    }

    /** Creates a fully wired GameData starting in the bedroom. */
    public static GameData buildGameData() {
        Player   player = new Player("TestStudent", 20);
        GameMap  map    = new GameMap();
        GameTime time   = new GameTime();
        return new GameData(player, map, time);
    }

    /**
     * Parses and executes a command string against the given context,
     * bypassing the allowed-commands check so commands can be tested
     * in isolation regardless of which room the player is in.
     */
    public static CommandResult execute(String input, GameData context) {
        // Build an unrestricted allowed list containing everything
        List<String> allAllowed = List.of(
            "study","sleep","walk","pickup","drop","consume","interact",
            "steal","buy","takeexam","inventory","stats","time","describe",
            "help","availablecommands","studentid"
        );
        CommandBase cmd = CommandManager.parseCommand(input, allAllowed);
        if (cmd == null) throw new IllegalArgumentException("Unknown command: " + input);
        return cmd.Execute(context);
    }
}