using Diffinitive.Grids

@testset "MultiBlockBoundary" begin
    @test MultiBlockBoundary{1,UpperBoundary}() isa BoundaryIdentifier

    @test grid_id(MultiBlockBoundary{1,UpperBoundary}()) == 1

    @test boundary_id(MultiBlockBoundary{1,UpperBoundary}()) == UpperBoundary()
end

@testset "connection" begin
    @test connection(1, UpperBoundary(), 2, LowerBoundary()) == (MultiBlockBoundary{1,UpperBoundary}(), MultiBlockBoundary{2,LowerBoundary}())
    @test connection(:a, UpperBoundary(), :b, LowerBoundary()) == (MultiBlockBoundary{:a,UpperBoundary}(), MultiBlockBoundary{:b,LowerBoundary}())
    @test connection((1, UpperBoundary(), 2, LowerBoundary())) == (MultiBlockBoundary{1,UpperBoundary}(), MultiBlockBoundary{2,LowerBoundary}())

    @test_throws Exception connection(1, UpperBoundary, 2, LowerBoundary())
    @test_throws Exception connection(1, UpperBoundary(), 2, LowerBoundary)
end