FlatCoordsInEpsilon ensures the flat coords are within the expected epsilon.

RequireGeographyInEpsilon and ensures the geometry shape and SRID are equal, and that each coordinate is within the provided epsilon.

RequireGeometryInEpsilon and ensures the geometry shape and SRID are equal, and that each coordinate is within the provided epsilon.

RequireGeomTInEpsilon ensures that the geom.T are equal, except for coords which should be within the given epsilon.

Epsilon is the default epsilon to use in spatial tests.