sneak/SharedTests/HistoryTests.cs

56 lines
1.4 KiB
C#

using System;
using Xunit;
namespace SemiColinGames.Tests {
public class HistoryTests {
public static int[] ToArray(History<int> history) {
int[] result = new int[history.Length];
for (int i = 0; i < history.Length; i++) {
result[i] = history[i];
}
return result;
}
[Fact]
public void TestLength() {
var h = new History<int>(3);
Assert.Equal(3, h.Length);
}
[Fact]
public void TestGetFromEmpty() {
var ints = new History<int>(3);
Assert.Equal(0, ints[0]);
Assert.Equal(0, ints[1]);
Assert.Equal(0, ints[2]);
var objects = new History<Object>(1);
Assert.Null(objects[0]);
}
[Fact]
public void TestAdds() {
var h = new History<int>(3);
Assert.Equal("0 0 0", String.Join(" ", ToArray(h)));
h.Add(2);
Assert.Equal("2 0 0", String.Join(" ", ToArray(h)));
h.Add(3);
h.Add(5);
Assert.Equal("5 3 2", String.Join(" ", ToArray(h)));
h.Add(7);
Assert.Equal("7 5 3", String.Join(" ", ToArray(h)));
h.Add(11);
h.Add(13);
Assert.Equal("13 11 7", String.Join(" ", ToArray(h)));
}
[Fact]
public void TestThrowsExceptions() {
var h = new History<int>(3);
Assert.Throws<IndexOutOfRangeException>(() => h[-1]);
Assert.Throws<IndexOutOfRangeException>(() => h[3]);
}
}
}