464 lines
13 KiB
C#
464 lines
13 KiB
C#
using FluentAssertions;
|
|
using FluentAssertions.Execution;
|
|
using System;
|
|
using Xunit;
|
|
using Xunit.Abstractions;
|
|
|
|
namespace Shogi.Domain.UnitTests
|
|
{
|
|
public class ShogiShould
|
|
{
|
|
private readonly ITestOutputHelper console;
|
|
public ShogiShould(ITestOutputHelper console)
|
|
{
|
|
this.console = console;
|
|
}
|
|
|
|
[Fact]
|
|
public void MoveAPieceToAnEmptyPosition()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
board["A4"].Should().BeNull();
|
|
var expectedPiece = board["A3"];
|
|
expectedPiece.Should().NotBeNull();
|
|
|
|
// Act
|
|
shogi.Move("A3", "A4", false);
|
|
|
|
// Assert
|
|
board["A3"].Should().BeNull();
|
|
board["A4"].Should().Be(expectedPiece);
|
|
}
|
|
|
|
[Fact]
|
|
public void AllowValidMoves_AfterCheck()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
// P1 Pawn
|
|
shogi.Move("C3", "C4", false);
|
|
// P2 Pawn
|
|
shogi.Move("G7", "G6", false);
|
|
// P1 Bishop puts P2 in check
|
|
shogi.Move("B2", "G7", false);
|
|
board.InCheck.Should().Be(WhichPlayer.Player2);
|
|
|
|
// Act - P2 is able to un-check theirself.
|
|
/// P2 King moves out of check
|
|
shogi.Move("E9", "E8", false);
|
|
|
|
// Assert
|
|
using (new AssertionScope())
|
|
{
|
|
board.InCheck.Should().BeNull();
|
|
}
|
|
}
|
|
|
|
[Fact]
|
|
public void PreventInvalidMoves_MoveFromEmptyPosition()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
board["D5"].Should().BeNull();
|
|
|
|
// Act
|
|
var act = () => shogi.Move("D5", "D6", false);
|
|
|
|
// Assert
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["D5"].Should().BeNull();
|
|
board["D6"].Should().BeNull();
|
|
board.Player1Hand.Should().BeEmpty();
|
|
board.Player2Hand.Should().BeEmpty();
|
|
}
|
|
|
|
[Fact]
|
|
public void PreventInvalidMoves_MoveToCurrentPosition()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
var expectedPiece = board["A3"];
|
|
|
|
// Act - P1 "moves" pawn to the position it already exists at.
|
|
var act = () => shogi.Move("A3", "A3", false);
|
|
|
|
// Assert
|
|
using (new AssertionScope())
|
|
{
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["A3"].Should().Be(expectedPiece);
|
|
board.Player1Hand.Should().BeEmpty();
|
|
board.Player2Hand.Should().BeEmpty();
|
|
}
|
|
}
|
|
|
|
[Fact]
|
|
public void PreventInvalidMoves_MoveSet()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
var expectedPiece = board["A1"];
|
|
expectedPiece!.WhichPiece.Should().Be(WhichPiece.Lance);
|
|
|
|
// Act - Move Lance illegally
|
|
var act = () => shogi.Move("A1", "D5", false);
|
|
|
|
// Assert
|
|
using (new AssertionScope())
|
|
{
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["A1"].Should().Be(expectedPiece);
|
|
board["A5"].Should().BeNull();
|
|
board.Player1Hand.Should().BeEmpty();
|
|
board.Player2Hand.Should().BeEmpty();
|
|
}
|
|
}
|
|
|
|
[Fact]
|
|
public void PreventInvalidMoves_Ownership()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
var expectedPiece = board["A7"];
|
|
expectedPiece!.Owner.Should().Be(WhichPlayer.Player2);
|
|
board.WhoseTurn.Should().Be(WhichPlayer.Player1);
|
|
|
|
// Act - Move Player2 Pawn when it is Player1 turn.
|
|
var act = () => shogi.Move("A7", "A6", false);
|
|
|
|
// Assert
|
|
using (new AssertionScope())
|
|
{
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["A7"].Should().Be(expectedPiece);
|
|
board["A6"].Should().BeNull();
|
|
}
|
|
}
|
|
|
|
[Fact]
|
|
public void PreventInvalidMoves_MoveThroughAllies()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
var lance = board["A1"];
|
|
var pawn = board["A3"];
|
|
lance!.Owner.Should().Be(pawn!.Owner);
|
|
|
|
// Act - Move P1 Lance through P1 Pawn.
|
|
var act = () => shogi.Move("A1", "A5", false);
|
|
|
|
// Assert
|
|
using (new AssertionScope())
|
|
{
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["A1"].Should().Be(lance);
|
|
board["A3"].Should().Be(pawn);
|
|
board["A5"].Should().BeNull();
|
|
}
|
|
}
|
|
|
|
[Fact]
|
|
public void PreventInvalidMoves_CaptureAlly()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
var knight = board["B1"];
|
|
var pawn = board["C3"];
|
|
knight!.Owner.Should().Be(pawn!.Owner);
|
|
|
|
// Act - P1 Knight tries to capture P1 Pawn.
|
|
var act = () => shogi.Move("B1", "C3", false);
|
|
|
|
// Arrange
|
|
using (new AssertionScope())
|
|
{
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["B1"].Should().Be(knight);
|
|
board["C3"].Should().Be(pawn);
|
|
board.Player1Hand.Should().BeEmpty();
|
|
board.Player2Hand.Should().BeEmpty();
|
|
}
|
|
}
|
|
|
|
[Fact]
|
|
public void PreventInvalidMoves_Check()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
// P1 Pawn
|
|
shogi.Move("C3", "C4", false);
|
|
// P2 Pawn
|
|
shogi.Move("G7", "G6", false);
|
|
// P1 Bishop puts P2 in check
|
|
shogi.Move("B2", "G7", false);
|
|
board.InCheck.Should().Be(WhichPlayer.Player2);
|
|
var lance = board["I9"];
|
|
|
|
// Act - P2 moves Lance while in check.
|
|
var act = () => shogi.Move("I9", "I8", false);
|
|
|
|
// Assert
|
|
using (new AssertionScope())
|
|
{
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board.InCheck.Should().Be(WhichPlayer.Player2);
|
|
board["I9"].Should().Be(lance);
|
|
board["I8"].Should().BeNull();
|
|
}
|
|
}
|
|
|
|
[Fact]
|
|
// TODO: Consider nesting classes to share this setup in a constructor but have act and assert as separate facts.
|
|
public void PreventInvalidDrops_MoveSet()
|
|
{
|
|
// Arrange
|
|
var board = new BoardState();
|
|
var shogi = new Session(board);
|
|
// P1 Pawn
|
|
shogi.Move("C3", "C4", false);
|
|
// P2 Pawn
|
|
shogi.Move("I7", "I6", false);
|
|
// P1 Bishop takes P2 Pawn.
|
|
shogi.Move("B2", "G7", false);
|
|
// P2 Gold, block check from P1 Bishop.
|
|
shogi.Move("F9", "F8", false);
|
|
// P1 Bishop takes P2 Bishop, promotes so it can capture P2 Knight and P2 Lance
|
|
shogi.Move("G7", "H8", true);
|
|
// P2 Pawn again
|
|
shogi.Move("I6", "I5", false);
|
|
// P1 Bishop takes P2 Knight
|
|
shogi.Move("H8", "H9", false);
|
|
// P2 Pawn again
|
|
shogi.Move("I5", "I4", false);
|
|
// P1 Bishop takes P2 Lance
|
|
shogi.Move("H9", "I9", false);
|
|
// P2 Pawn captures P1 Pawn
|
|
shogi.Move("I4", "I3", false);
|
|
board.Player1Hand.Count.Should().Be(4);
|
|
board.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Knight);
|
|
board.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Lance);
|
|
board.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Pawn);
|
|
board.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Bishop);
|
|
board.WhoseTurn.Should().Be(WhichPlayer.Player1);
|
|
|
|
// Act | Assert - Illegally placing Knight from the hand in farthest rank.
|
|
board["H9"].Should().BeNull();
|
|
var act = () => shogi.Move(WhichPiece.Knight, "H9");
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["H9"].Should().BeNull();
|
|
board.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Knight);
|
|
|
|
// Act | Assert - Illegally placing Knight from the hand in second farthest row.
|
|
board["H8"].Should().BeNull();
|
|
act = () => shogi.Move(WhichPiece.Knight, "H8");
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["H8"].Should().BeNull();
|
|
board.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Knight);
|
|
|
|
// Act | Assert - Illegally place Lance from the hand.
|
|
board["H9"].Should().BeNull();
|
|
act = () => shogi.Move(WhichPiece.Knight, "H9");
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["H9"].Should().BeNull();
|
|
board.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Lance);
|
|
|
|
// Act | Assert - Illegally place Pawn from the hand.
|
|
board["H9"].Should().BeNull();
|
|
act = () => shogi.Move(WhichPiece.Pawn, "H9");
|
|
act.Should().Throw<InvalidOperationException>();
|
|
board["H9"].Should().BeNull();
|
|
board.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Pawn);
|
|
|
|
// // Act | Assert - Illegally place Pawn from the hand in a row which already has an unpromoted Pawn.
|
|
// // TODO
|
|
}
|
|
|
|
//[Fact]
|
|
//public void PreventInvalidDrop_Check()
|
|
//{
|
|
// // Arrange
|
|
// var moves = new[]
|
|
// {
|
|
// // P1 Pawn
|
|
// new Move("C3", "C4"),
|
|
// // P2 Pawn
|
|
// new Move("G7", "G6"),
|
|
// // P1 Pawn, arbitrary move.
|
|
// new Move("A3", "A4"),
|
|
// // P2 Bishop takes P1 Bishop
|
|
// new Move("H8", "B2"),
|
|
// // P1 Silver takes P2 Bishop
|
|
// new Move("C1", "B2"),
|
|
// // P2 Pawn, arbtrary move
|
|
// new Move("A7", "A6"),
|
|
// // P1 drop Bishop, place P2 in check
|
|
// new Move(WhichPiece.Bishop, "G7")
|
|
// };
|
|
// var shogi = new Shogi(moves);
|
|
// shogi.InCheck.Should().Be(WhichPlayer.Player2);
|
|
// shogi.Player2Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Bishop);
|
|
// boardState["E5"].Should().BeNull();
|
|
|
|
// // Act - P2 places a Bishop while in check.
|
|
// var dropSuccess = shogi.Move(new Move(WhichPiece.Bishop, "E5"));
|
|
|
|
// // Assert
|
|
// dropSuccess.Should().BeFalse();
|
|
// boardState["E5"].Should().BeNull();
|
|
// shogi.InCheck.Should().Be(WhichPlayer.Player2);
|
|
// shogi.Player2Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Bishop);
|
|
//}
|
|
|
|
//[Fact]
|
|
//public void PreventInvalidDrop_Capture()
|
|
//{
|
|
// // Arrange
|
|
// var moves = new[]
|
|
// {
|
|
// // P1 Pawn
|
|
// new Move("C3", "C4"),
|
|
// // P2 Pawn
|
|
// new Move("G7", "G6"),
|
|
// // P1 Bishop capture P2 Bishop
|
|
// new Move("B2", "H8"),
|
|
// // P2 Pawn
|
|
// new Move("G6", "G5")
|
|
// };
|
|
// var shogi = new Shogi(moves);
|
|
// using (new AssertionScope())
|
|
// {
|
|
// shogi.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Bishop);
|
|
// boardState["I9"].Should().NotBeNull();
|
|
// boardState["I9"].WhichPiece.Should().Be(WhichPiece.Lance);
|
|
// boardState["I9"].Owner.Should().Be(WhichPlayer.Player2);
|
|
// }
|
|
|
|
// // Act - P1 tries to place a piece where an opponent's piece resides.
|
|
// var dropSuccess = shogi.Move(new Move(WhichPiece.Bishop, "I9"));
|
|
|
|
// // Assert
|
|
// using (new AssertionScope())
|
|
// {
|
|
// dropSuccess.Should().BeFalse();
|
|
// shogi.Player1Hand.Should().ContainSingle(_ => _.WhichPiece == WhichPiece.Bishop);
|
|
// boardState["I9"].Should().NotBeNull();
|
|
// boardState["I9"].WhichPiece.Should().Be(WhichPiece.Lance);
|
|
// boardState["I9"].Owner.Should().Be(WhichPlayer.Player2);
|
|
// }
|
|
//}
|
|
|
|
[Fact]
|
|
public void Check()
|
|
{
|
|
// Arrange
|
|
var boardState = new BoardState();
|
|
var shogi = new Session(boardState);
|
|
// P1 Pawn
|
|
shogi.Move("C3", "C4", false);
|
|
// P2 Pawn
|
|
shogi.Move("G7", "G6", false);
|
|
|
|
// Act - P1 Bishop, check
|
|
shogi.Move("B2", "G7", false);
|
|
|
|
// Assert
|
|
boardState.InCheck.Should().Be(WhichPlayer.Player2);
|
|
}
|
|
|
|
[Fact]
|
|
public void Promote()
|
|
{
|
|
// Arrange
|
|
var boardState = new BoardState();
|
|
var shogi = new Session(boardState);
|
|
// P1 Pawn
|
|
shogi.Move("C3", "C4", false);
|
|
// P2 Pawn
|
|
shogi.Move("G7", "G6", false);
|
|
|
|
// Act - P1 moves across promote threshold.
|
|
shogi.Move("B2", "G7", true);
|
|
|
|
// Assert
|
|
using (new AssertionScope())
|
|
{
|
|
boardState["B2"].Should().BeNull();
|
|
boardState["G7"].Should().NotBeNull();
|
|
boardState["G7"]!.WhichPiece.Should().Be(WhichPiece.Bishop);
|
|
boardState["G7"]!.Owner.Should().Be(WhichPlayer.Player1);
|
|
boardState["G7"]!.IsPromoted.Should().BeTrue();
|
|
}
|
|
}
|
|
|
|
[Fact]
|
|
public void Capture()
|
|
{
|
|
// Arrange
|
|
var boardState = new BoardState();
|
|
var shogi = new Session(boardState);
|
|
var p1Bishop = boardState["B2"];
|
|
p1Bishop!.WhichPiece.Should().Be(WhichPiece.Bishop);
|
|
shogi.Move("C3", "C4", false);
|
|
shogi.Move("G7", "G6", false);
|
|
|
|
// Act - P1 Bishop captures P2 Bishop
|
|
shogi.Move("B2", "H8", false);
|
|
|
|
// Assert
|
|
boardState["B2"].Should().BeNull();
|
|
boardState["H8"].Should().Be(p1Bishop);
|
|
|
|
boardState
|
|
.Player1Hand
|
|
.Should()
|
|
.ContainSingle(p => p.WhichPiece == WhichPiece.Bishop && p.Owner == WhichPlayer.Player1);
|
|
}
|
|
|
|
[Fact]
|
|
public void CheckMate()
|
|
{
|
|
// Arrange
|
|
var boardState = new BoardState();
|
|
var shogi = new Session(boardState);
|
|
// P1 Rook
|
|
shogi.Move("H2", "E2", false);
|
|
// P2 Gold
|
|
shogi.Move("F9", "G8", false);
|
|
// P1 Pawn
|
|
shogi.Move("E3", "E4", false);
|
|
// P2 other Gold
|
|
shogi.Move("D9", "C8", false);
|
|
// P1 same Pawn
|
|
shogi.Move("E4", "E5", false);
|
|
// P2 Pawn
|
|
shogi.Move("E7", "E6", false);
|
|
// P1 Pawn takes P2 Pawn
|
|
shogi.Move("E5", "E6", false);
|
|
// P2 King
|
|
shogi.Move("E9", "E8", false);
|
|
// P1 Pawn promotes; threatens P2 King
|
|
shogi.Move("E6", "E7", true);
|
|
// P2 King retreat
|
|
shogi.Move("E8", "E9", false);
|
|
|
|
// Act - P1 Pawn wins by checkmate.
|
|
shogi.Move("E7", "E8", false);
|
|
|
|
// Assert - checkmate
|
|
console.WriteLine(shogi.ToStringStateAsAscii());
|
|
boardState.IsCheckmate.Should().BeTrue();
|
|
boardState.InCheck.Should().Be(WhichPlayer.Player2);
|
|
}
|
|
}
|
|
}
|