Upsilon/UpsilonTests/GeneralTests/IfTests.cs

using Upsilon.Evaluator;
using Xunit;

namespace UpsilonTests.GeneralTests
{
    public class IfTests : TestClass
    {
        public IfTests(StaticScriptFixture fix) : base(fix)
        {
        }

        [Fact]
        public void BasicIfTest()
        {
            const string input = @"
if true then
    return true
end
return false";
            var script = new Script(input, BoundScope, StaticScope);
            Assert.Empty(script.Diagnostics.Messages);
            var actual = script.Evaluate<bool>();
            Assert.True(actual);
        }

        [Theory]
        [InlineData("true", 3, 8, 3)]
        [InlineData("false", 3, 8, 8)]
        [InlineData("5 == 5", 500, 349, 500)]
        public void BasicIfElseTests(string condition, int in1, int in2, long expected)
        {
            var input  =
$@"
if {condition} then
    val = {in1}
else
    val = {in2}
end";
            var script = new Script(input, BoundScope, StaticScope);
            Assert.Empty(script.Diagnostics.Messages);
            var actual = script.Evaluate<long>();
            Assert.Equal(expected, actual);
        }

        [Theory]
        [InlineData("true", "false", 3, 8, 5, 3)]
        [InlineData("false", "true", 3, 8, 5, 8)]
        public void BasicIfElseIfElseTests(string condition1, string condition2, int in1, int in2, int in3, long expected)
        {
            var input =
                $@"
if {condition1} then
    val = {in1}
elseif {condition2} then
    val = {in2}
else
    val = {in3}
end";
            var script = new Script(input, BoundScope, StaticScope);
            Assert.Empty(script.Diagnostics.Messages);
            var actual = script.Evaluate<long>();
            Assert.Equal(expected, actual);
        }

    }
}