using Glass.Markdown;
using System;
using UnitTestSharp;

namespace Glass.UnitTests
{
    public class MarkdownStyleTests : TestFixture
    {
        private static readonly TextMaterialStyle Big = MarkdownViewTests.Plain with { Scale = 2 };
        private static readonly TextMaterialStyle Medium = MarkdownViewTests.Plain with { Scale = 1.5 };

        public class HeadingStyleForTests : TestFixture
        {
            public void ReturnsEachLevelsStyle()
            {
                var style = new MarkdownStyle { Body = MarkdownViewTests.Plain, Headings = new[] { Big, Medium } };

                CheckEqual(Big, style.HeadingStyleFor(1));
                CheckEqual(Medium, style.HeadingStyleFor(2));
            }

            public void UsesTheLastStyleForDeeperLevels()
            {
                var style = new MarkdownStyle { Body = MarkdownViewTests.Plain, Headings = new[] { Big, Medium } };

                CheckEqual(Medium, style.HeadingStyleFor(6));
            }

            public void UsesTheBodyWhenThereAreNoHeadingStyles()
            {
                var style = new MarkdownStyle { Body = MarkdownViewTests.Plain };

                CheckEqual(MarkdownViewTests.Plain, style.HeadingStyleFor(3));
            }

            public void RejectsLevelsBelowOne()
            {
                var style = new MarkdownStyle { Body = MarkdownViewTests.Plain };

                CheckThrow(typeof(ArgumentOutOfRangeException));
                style.HeadingStyleFor(0);
            }
        }
    }
}