This unit test (and other unit tests for mixed barrier conditions, etc.) does not check whether we get accurate solutions when we have irregular grids -- it barely checks if we get an appropriate solution when we get AbstractArray instead of AbstractRange type nodes
To implement it in a right way, one has to use something like [1.0; 2.0; 4.0] rather than collect(1:3) (which is essentially a unitform grid)
https://github.com/QuantEcon/SimpleDifferentialOperators.jl/blob/master/test/operators.jl#L9-L29
This unit test (and other unit tests for mixed barrier conditions, etc.) does not check whether we get accurate solutions when we have irregular grids -- it barely checks if we get an appropriate solution when we get
AbstractArrayinstead ofAbstractRangetype nodesTo implement it in a right way, one has to use something like
[1.0; 2.0; 4.0]rather thancollect(1:3)(which is essentially a unitform grid)