ci: error check on fake wrong ConvertFun for SeriesAggreg tests

Refs #82

tests/testthat/helper_seriesaggreg.R

-sample2 <- function(x) {sample(x, 2)}
-
-stringFunction <- function(x) {format(max(x))}

tests/testthat/test-SeriesAggreg.R

@@ -230,11 +230,3 @@ test_that("SeriesAggreg should work with ConvertFun 'min', 'max' and 'median'",
   }
   lapply(c("max", "min", "median"), function(x) {test_ConvertFunRegime(Qls, x, "%Y")})
 })
-
-test_that("Error on wrong aggregation function", {
-  Qls <- BasinObs[, c("DatesR", "Qls")]
-  expect_error(SeriesAggreg(Qls, "%Y", ConvertFun = "sample2"),
-               regexp = "should be of length 1")
-  expect_error(SeriesAggreg(Qls, "%Y", ConvertFun = "stringFunction"),
-               regexp = "should be numeric")
-})