Imports Xunit Public Class TriangleTests Public Sub Equilateral_triangle_all_sides_are_equal() Assert.True(IsEquilateral(2, 2, 2)) End Sub Public Sub Equilateral_triangle_any_side_is_unequal() Assert.False(IsEquilateral(2, 3, 2)) End Sub Public Sub Equilateral_triangle_no_sides_are_equal() Assert.False(IsEquilateral(5, 4, 6)) End Sub Public Sub Equilateral_triangle_all_zero_sides_is_not_a_triangle() Assert.False(IsEquilateral(0, 0, 0)) End Sub Public Sub Equilateral_triangle_sides_may_be_floats() Assert.True(IsEquilateral(0.5, 0.5, 0.5)) End Sub Public Sub Isosceles_triangle_last_two_sides_are_equal() Assert.True(IsIsosceles(3, 4, 4)) End Sub Public Sub Isosceles_triangle_first_two_sides_are_equal() Assert.True(IsIsosceles(4, 4, 3)) End Sub Public Sub Isosceles_triangle_first_and_last_sides_are_equal() Assert.True(IsIsosceles(4, 3, 4)) End Sub Public Sub Isosceles_triangle_equilateral_triangles_are_also_isosceles() Assert.True(IsIsosceles(4, 4, 4)) End Sub Public Sub Isosceles_triangle_no_sides_are_equal() Assert.False(IsIsosceles(2, 3, 4)) End Sub Public Sub Isosceles_triangle_first_triangle_inequality_violation() Assert.False(IsIsosceles(1, 1, 3)) End Sub Public Sub Isosceles_triangle_second_triangle_inequality_violation() Assert.False(IsIsosceles(1, 3, 1)) End Sub Public Sub Isosceles_triangle_third_triangle_inequality_violation() Assert.False(IsIsosceles(3, 1, 1)) End Sub Public Sub Isosceles_triangle_sides_may_be_floats() Assert.True(IsIsosceles(0.5, 0.4, 0.5)) End Sub Public Sub Scalene_triangle_no_sides_are_equal() Assert.True(IsScalene(5, 4, 6)) End Sub Public Sub Scalene_triangle_all_sides_are_equal() Assert.False(IsScalene(4, 4, 4)) End Sub Public Sub Scalene_triangle_first_and_second_sides_are_equal() Assert.False(IsScalene(4, 4, 3)) End Sub Public Sub Scalene_triangle_first_and_third_sides_are_equal() Assert.False(IsScalene(3, 4, 3)) End Sub Public Sub Scalene_triangle_second_and_third_sides_are_equal() Assert.False(IsScalene(4, 3, 3)) End Sub Public Sub Scalene_triangle_may_not_violate_triangle_inequality() Assert.False(IsScalene(7, 3, 2)) End Sub Public Sub Scalene_triangle_sides_may_be_floats() Assert.True(IsScalene(0.5, 0.4, 0.6)) End Sub End Class