R Under development (unstable) (2025-05-27 r88249 ucrt) -- "Unsuffered Consequences"
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> 
> library(datapackage)
> source("helpers.R")
> 
> # === NO FORMAT
> fielddescriptor <- list(
+   name = "yearmonth",
+   title = "A yearmonth field",
+   description = "A description",
+   type = "yearmonth"
+ )
> res <- dp_to_yearmonth(c("2020-01", "202212", "", NA), 
+   fielddescriptor = fielddescriptor)
> expect_equal(res, as.Date(c("2020-01-01", "2022-12-01", NA, NA)), attributes = FALSE)
> expect_attribute(res, "fielddescriptor", fielddescriptor)
> suppressWarnings(expect_error(
+   to_datetime(c("2022 01", "2024 01", "", NA), fielddescriptor = fielddescriptor)
+ ))
> 
> # === NO FIELDDESCRIPTOR
> fielddescriptor <- list(
+   type = "yearmonth"
+ )
> res <- dp_to_yearmonth(c("2020-01", "202212", "", NA))
> expect_equal(res, as.Date(c("2020-01-01", "2022-12-01", NA, NA)), attributes = FALSE)
> expect_attribute(res, "fielddescriptor", fielddescriptor)
> suppressWarnings(expect_error(
+   to_datetime(c("2022 01", "2024 01", "", NA), fielddescriptor = fielddescriptor)
+ ))
> 
> # === MISSINGVALUES
> fielddescriptor <- list(
+   name = "yearmonth",
+   title = "A yearmonth field",
+   description = "A description",
+   type = "yearmonth",
+   missingValues = "0000-00"
+ )
> res <- dp_to_yearmonth(c("2020-01", "202212", "0000-00", NA), 
+   fielddescriptor = fielddescriptor)
> expect_equal(res, as.Date(c("2020-01-01", "2022-12-01", NA, NA)), attributes = FALSE)
> expect_attribute(res, "fielddescriptor", fielddescriptor)
> suppressWarnings(expect_error(
+   res <- dp_to_yearmonth(c("2020-01", "202212", "-------", NA), 
+     fielddescriptor = fielddescriptor)
+ ))
> 
> 
> 
> 
> # === NUMERIC
> res <- dp_to_yearmonth(197001)
> expect_equal(res, as.Date("1970-01-01"), attributes = FALSE)
> expect_attribute(res, "fielddescriptor", list(type = "yearmonth"))
> 
> 
> # === DATE
> res <- dp_to_yearmonth(as.Date("1980-01-06"))
> expect_equal(res, as.Date("1980-01-01"), attributes = FALSE)
> expect_attribute(res, "fielddescriptor", list(type = "yearmonth"))
> 
> # === TIME
> res <- dp_to_yearmonth(as.POSIXct("1980-01-06 14:15"))
> expect_equal(res, as.Date("1980-01-01"), attributes = FALSE)
> expect_attribute(res, "fielddescriptor", list(type = "yearmonth"))
> res <- dp_to_yearmonth(as.POSIXlt("1980-01-06 14:15"))
> expect_equal(res, as.Date("1980-01-01"), attributes = FALSE)
> expect_attribute(res, "fielddescriptor", list(type = "yearmonth"))
> 
> 
> # =============================================================================
> # csv_colclass
> res <- datapackage:::csv_colclass_yearmonth() 
> expect_equal(res, "character")
> 
> res <- datapackage:::csv_colclass(list(type = "yearmonth")) 
> expect_equal(res, "character")
> 
> 
> # =============================================================================
> # csv_format
> 
> res <- datapackage:::csv_format_yearmonth(as.Date("2020-01-01"))
> expect_equal(res, "2020-01")
> 
> res <- datapackage:::csv_format_yearmonth(as.Date("2020-01-05"))
> expect_equal(res, "2020-01")
> 
> fielddescriptor <- list(
+     type = "yearmonth",
+     missingValues = c("0000-00", "-------")
+   )
> res <- datapackage:::csv_format_yearmonth(as.Date(c("2020-01-01", NA)), 
+   fielddescriptor = fielddescriptor)
> expect_equal(res, c("2020-01", "0000-00"))
> 
> 
> proc.time()
   user  system elapsed 
   0.18    0.17    0.32