R Under development (unstable) (2025-09-08 r88798 ucrt) -- "Unsuffered Consequences"
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> # Other tests which don't work within the testthat framework.
> library(RobinCar2)

Attaching package: 'RobinCar2'

The following object is masked from 'package:base':

    table

> 
> # test: "h_prep_survival_input works with survival::Surv objects"
> surv_obj <- with(surv_data, survival::Surv(time, status))
> # This works with coxph e.g.:
> example <- survival::coxph(surv_obj ~ sex, data = surv_data)
> result <- RobinCar2:::h_prep_survival_input(
+   formula = surv_obj ~ 1,
+   # We have another restriction here to avoid ambiguity, therefore
+   # need to remove the time and status columns from the data.
+   data = subset(surv_data, select = -c(time, status)),
+   treatment = sex ~ 1
+ )
> expected <- list(
+   data = cbind(
+     subset(surv_data, select = -c(time, status)),
+     subset(surv_data, select = c(time, status))
+   ), # The two removed columns have been added back.
+   time = "time",
+   status = "status",
+   treatment = "sex",
+   strata = character(),
+   schema = "sp",
+   covariates = character(),
+   model = ~1,
+   n_levels = 2L,
+   levels = c("Female", "Male")
+ )
> testthat::expect_equal(result, expected, ignore_formula_env = TRUE)
> 
> proc.time()
   user  system elapsed 
   1.85    0.21    2.03