Implement Queen Attack generator

exercises/queen-attack/Example.cs

@@ -12,7 +12,7 @@ public Queen(int row, int column)
     public int Column { get; }
 }
 
-public static class Queens
+public static class QueenAttack
 {
     public static bool CanAttack(Queen white, Queen black)
     {
@@ -25,4 +25,17 @@ public static bool CanAttack(Queen white, Queen black)
                black.Column == white.Column ||
                Math.Abs(black.Row - white.Row) == Math.Abs(black.Column - white.Column);
     }
+
+    public static Queen Create(int row, int column)
+    {
+        const int MIN_VALUE = 0;
+        const int MAX_VALUE = 7;
+
+        if (row < MIN_VALUE || column < MIN_VALUE || row > MAX_VALUE || column > MAX_VALUE)
+        {
+            throw new ArgumentOutOfRangeException("invalid queen position");
+        }
+
+        return new Queen(row, column);
+    }
 }

exercises/queen-attack/QueenAttack.cs

@@ -12,10 +12,15 @@ public Queen(int row, int column)
     public int Column { get; }
 }
 
-public static class Queens
+public static class QueenAttack
 {
     public static bool CanAttack(Queen white, Queen black)
     {
         throw new NotImplementedException("You need to implement this function.");
     }
+
+    public static Queen Create(int row, int column)
+    {
+        throw new NotImplementedException("You need to implement this function.");
+    }
 }

exercises/queen-attack/QueenAttackTest.cs

@@ -1,55 +1,93 @@
-using System;
+// This file was auto-generated based on version 1.0.0 of the canonical data.
+
 using Xunit;
+using System;
 
 public class QueenAttackTest
 {
     [Fact]
-    public void Cannot_occupy_same_space()
+    public void Queen_with_a_valid_position_does_not_throw_exception()
+    {
+        var actual = QueenAttack.Create(2, 2);
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Queen_must_have_positive_rank()
+    {
+        Assert.Throws<ArgumentOutOfRangeException>(() => QueenAttack.Create(-2, 2));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Queen_must_have_rank_on_board()
+    {
+        Assert.Throws<ArgumentOutOfRangeException>(() => QueenAttack.Create(8, 4));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Queen_must_have_positive_file()
+    {
+        Assert.Throws<ArgumentOutOfRangeException>(() => QueenAttack.Create(2, -2));
+    }
+
+    [Fact(Skip = "Remove to run test")]
+    public void Queen_must_have_file_on_board()
     {
-        var white = new Queen(2, 4);
-        var black = new Queen(2, 4);
-        Assert.Throws<ArgumentException>(() => Queens.CanAttack(white, black));
+        Assert.Throws<ArgumentOutOfRangeException>(() => QueenAttack.Create(4, 8));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Cannot_attack()
+    public void Can_not_attack()
     {
-        Assert.False(Queens.CanAttack(new Queen(2, 3), new Queen(4, 7)));
+        var whiteQueen = QueenAttack.Create(2,4);
+        var blackQueen = QueenAttack.Create(6,6);
+        Assert.False(QueenAttack.CanAttack(whiteQueen, blackQueen));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Can_attack_on_same_row()
+    public void Can_attack_on_same_rank()
     {
-        Assert.True(Queens.CanAttack(new Queen(2, 4), new Queen(2, 7)));
+        var whiteQueen = QueenAttack.Create(2,4);
+        var blackQueen = QueenAttack.Create(2,6);
+        Assert.True(QueenAttack.CanAttack(whiteQueen, blackQueen));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Can_attack_on_same_column()
+    public void Can_attack_on_same_file()
     {
-        Assert.True(Queens.CanAttack(new Queen(5, 4), new Queen(2, 4)));
+        var whiteQueen = QueenAttack.Create(4,5);
+        var blackQueen = QueenAttack.Create(2,5);
+        Assert.True(QueenAttack.CanAttack(whiteQueen, blackQueen));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Can_attack_on_diagonal()
+    public void Can_attack_on_first_diagonal()
     {
-        Assert.True(Queens.CanAttack(new Queen(1, 1), new Queen(6, 6)));
+        var whiteQueen = QueenAttack.Create(2,2);
+        var blackQueen = QueenAttack.Create(0,4);
+        Assert.True(QueenAttack.CanAttack(whiteQueen, blackQueen));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Can_attack_on_other_diagonal()
+    public void Can_attack_on_second_diagonal()
     {
-        Assert.True(Queens.CanAttack(new Queen(0, 6), new Queen(1, 7)));
+        var whiteQueen = QueenAttack.Create(2,2);
+        var blackQueen = QueenAttack.Create(3,1);
+        Assert.True(QueenAttack.CanAttack(whiteQueen, blackQueen));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Can_attack_on_yet_another_diagonal()
+    public void Can_attack_on_third_diagonal()
     {
-        Assert.True(Queens.CanAttack(new Queen(4, 1), new Queen(6, 3)));
+        var whiteQueen = QueenAttack.Create(2,2);
+        var blackQueen = QueenAttack.Create(1,1);
+        Assert.True(QueenAttack.CanAttack(whiteQueen, blackQueen));
     }
 
     [Fact(Skip = "Remove to run test")]
-    public void Can_attack_on_a_diagonal_slanted_the_other_way()
+    public void Can_attack_on_fourth_diagonal()
     {
-        Assert.True(Queens.CanAttack(new Queen(6, 1), new Queen(1, 6)));
+        var whiteQueen = QueenAttack.Create(2,2);
+        var blackQueen = QueenAttack.Create(5,5);
+        Assert.True(QueenAttack.CanAttack(whiteQueen, blackQueen));
     }
 }

generators/Exercises/QueenAttack.cs

@@ -0,0 +1,85 @@
+using Generators.Input;
+using Generators.Output;
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+
+namespace Generators.Exercises
+{
+    public class QueenAttack : Exercise
+    {
+        protected override void UpdateCanonicalData(CanonicalData canonicalData)
+        {
+            foreach (var canonicalDataCase in canonicalData.Cases)
+            {
+                if (canonicalDataCase.Property == "create")
+                {
+                    SetCreatePropertyData(canonicalDataCase);
+                }
+            }
+        }
+
+        protected override string RenderTestMethodBodyAssert(TestMethodBody testMethodBody)
+        {
+            if (testMethodBody.CanonicalDataCase.Property == "canAttack")
+            {
+                return RenderCanAttackAssert(testMethodBody);
+            }
+
+            if (testMethodBody.UseVariableForTested)
+            {
+                return string.Empty;
+            }
+
+            return base.RenderTestMethodBodyAssert(testMethodBody);
+        }
+
+        private static string RenderCanAttackAssert(TestMethodBody testMethodBody)
+        {
+            const string template =
+@"var whiteQueen = QueenAttack.Create({{whiteQueenX}},{{whiteQueenY}});
+var blackQueen = QueenAttack.Create({{blackQueenX}},{{blackQueenY}});
+Assert.{% if Expected %}True{% else %}False{% endif %}(QueenAttack.CanAttack(whiteQueen, blackQueen));";
+
+            var whiteQueenPositions = GetCoordinatesFromPosition(testMethodBody.CanonicalDataCase.Input["white_queen"]);
+            var blackQueenPositions = GetCoordinatesFromPosition(testMethodBody.CanonicalDataCase.Input["black_queen"]);
+
+            var templateParameters = new
+            {
+                whiteQueenX = whiteQueenPositions.Item1,
+                whiteQueenY = whiteQueenPositions.Item2,
+                blackQueenX = blackQueenPositions.Item1,
+                blackQueenY = blackQueenPositions.Item2,
+                Expected = testMethodBody.CanonicalDataCase.Expected
+            };
+
+            return TemplateRenderer.RenderInline(template, templateParameters);
+        }
+
+        private static Tuple<int, int> GetCoordinatesFromPosition(object rawPosition)
+        {
+            var coordinates = ((JObject)rawPosition).ToObject<Dictionary<string, string>>()["position"].Split(',');
+
+            var positionX = int.Parse(coordinates[0].TrimStart('('));
+            var positionY = int.Parse(coordinates[1].TrimEnd(')'));
+
+            return Tuple.Create(positionX, positionY);
+        }
+
+        private static void SetCreatePropertyData(CanonicalDataCase canonicalDataCase)
+        {
+            var validExpected = (long)canonicalDataCase.Expected >= 0;
+
+            canonicalDataCase.UseVariableForTested = validExpected;
+            canonicalDataCase.ExceptionThrown = validExpected ? null : typeof(ArgumentOutOfRangeException);
+            canonicalDataCase.Description = validExpected ? canonicalDataCase.Description + " does not throw exception" : canonicalDataCase.Description;
+
+            var coordinates = GetCoordinatesFromPosition(canonicalDataCase.Input["queen"]);
+            canonicalDataCase.Input = new Dictionary<string, object>
+            {
+                ["X"] = coordinates.Item1,
+                ["Y"] = coordinates.Item2
+            };
+        }
+    }
+}