`1` ```exercism fetch csharp pythagorean-triplet ```

#### PythagoreanTripletTest.cs

 ```1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49``` ```using System.Linq; using Xunit; public class PythagoreanTripletTest { [Fact] public void Calculates_the_sum() { Assert.Equal(12, new Triplet(3, 4, 5).Sum()); } [Fact(Skip = "Remove to run test")] public void Calculates_the_product() { Assert.Equal(60, new Triplet(3, 4, 5).Product()); } [Theory(Skip = "Remove to run test")] [InlineData(3, 4, 5, true)] [InlineData(5, 6, 7, false)] public void Can_recognize_a_valid_pythagorean(int a, int b, int c, bool expected) { Assert.Equal(expected, new Triplet(a, b, c).IsPythagorean()); } [Fact(Skip = "Remove to run test")] public void Can_make_triplets_up_to_10() { var triplets = Triplet.Where(maxFactor: 10); var products = triplets.Select(x => x.Product()).OrderBy(x => x); Assert.Equal(new[] { 60, 480 }, products); } [Fact(Skip = "Remove to run test")] public void Can_make_triplets_from_11_to_20() { var triplets = Triplet.Where(minFactor: 11, maxFactor: 20); var products = triplets.Select(x => x.Product()); Assert.Equal(new[] { 3840 }, products); } [Fact(Skip = "Remove to run test")] public void Can_make_triplets_filtered_on_sum() { var triplets = Triplet.Where(sum: 180, maxFactor: 100); var products = triplets.Select(x => x.Product()).OrderBy(x => x); Assert.Equal(new[] { 118080, 168480, 202500 }, products); } } ```