52 lines
1.6 KiB
C#
52 lines
1.6 KiB
C#
using NUnit.Framework;
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using MultiversalDiplomacy.Script;
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namespace MultiversalDiplomacyTests;
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public class ReplDriver(IScriptHandler initialHandler, bool echo = false)
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{
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public IScriptHandler? Handler { get; private set; } = initialHandler;
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private string? LastInput { get; set; } = "";
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/// <summary>
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/// Whether to print the inputs as they are executed. This is primarily a debugging aid.
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/// </summary>
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bool Echo { get; } = echo;
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/// <summary>
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/// Input a multiline string into the repl. Call <see cref="AssertReady"/> or <see cref="AssertClosed"/> at the end so the
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/// statement is valid.
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/// </summary>
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public ReplDriver this[string input] => ExecuteAll(input);
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public ReplDriver ExecuteAll(string multiline)
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{
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var lines = multiline.Split('\n', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries);
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return lines.Aggregate(this, (repl, line) => repl.Execute(line));
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}
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public ReplDriver Execute(string inputLine)
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{
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if (Handler is null) throw new AssertionException(
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$"Cannot execute \"{inputLine}\", handler quit. Last input was \"{LastInput}\"");
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if (Echo) Console.WriteLine($"{Handler.Prompt}{inputLine}");
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Handler = Handler.HandleInput(inputLine);
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LastInput = inputLine;
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return this;
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}
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public void AssertReady()
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{
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if (Handler is null) Assert.Fail($"Handler terminated after \"{LastInput}\"");
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}
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public void AssertClosed()
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{
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if (Handler is not null) Assert.Fail($"Handler did not terminate after \"{LastInput}\"");
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}
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}
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