nmTest({
  one.compartment <- function() {
    ini({
      tka <- log(1.57); label("Ka")
      tcl <- log(2.72); label("Cl")
      tv <- log(31.5); label("V")
      eta.ka ~ 0.6
      eta.cl ~ 0.3
      eta.v ~ 0.1
      add.sd <- 0.7
    })
    # and a model block with the error specification and model specification
    model({
      ka <- exp(tka + eta.ka)
      cl <- exp(tcl + eta.cl)
      v <- exp(tv + eta.v)
      d/dt(depot) <- -ka * depot
      d/dt(center) <- ka * depot - cl / v * center
      cp <- center / v
      cp ~ add(add.sd)
    })
  }

  fit <- .nlmixr(one.compartment, theo_sd, est="saem", saemControlFast)

  expect_error(.nlmixr(fit, getData(fit), est="rxSolve"), NA)
})