Upsilon/UpsilonTests/GeneralTests/ScopeTests.cs

using Upsilon.Evaluator;
using Xunit;

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

        [Fact]
        public void LocalInnerScopeDoesNotOverrideGlobal()
        {
            const string input = @"
a = 10
function testFunc()
    local a = 100
end
testFunc()
";
            var script = new Script(input, BoundScope, StaticScope);
            Assert.Empty(script.Diagnostics.Messages);
            script.Evaluate();
            Assert.Empty(script.Diagnostics.Messages);
            var a = script.GetVariable<long>("a");
            Assert.Equal(10, a);
        }

        [Fact]
        public void InnerScopeDoesOverrideGlobal()
        {
            const string input = @"
a = 10
if true then
    a = 100
end
b = a
";
            var script = new Script(input, BoundScope, StaticScope);
            Assert.Empty(script.Diagnostics.Messages);
            script.Evaluate();
            Assert.Empty(script.Diagnostics.Messages);
            var a = script.GetVariable<long>("a");
            Assert.Equal(100, a);
        }

        [Fact]
        public void InnerScopeDefinesToUpperLocalIfLogical()
        {
            const string input = @"
arr = {100, 56, 28}
local value = 0
for key, val in ipairs(arr) do
    value = value + val
end
return value
";
            var script = new Script(input, BoundScope, StaticScope);
            Assert.Empty(script.Diagnostics.Messages);
            var result = script.Evaluate<long>();
            Assert.Empty(script.Diagnostics.Messages);
            Assert.Equal(184, result);
        }

    }
}