message_ix_models.tests.model.water.conftest.water_params

message_ix_models.tests.model.water.conftest.water_params(region, *, reduced_basin=False, **extra)

Build a water_context param dict for the given region.

Encodes the region→type_reg mapping once. When reduced_basin is True, adds first_k selection with num_basins=2 (24 basins total).