Warnings in tests

[olivroy]

devtools::load_all("~/rrr-forks/timetk/")
#> ℹ Loading timetk
#> Registered S3 method overwritten by 'quantmod':
#>   method            from
#>   as.zoo.data.frame zoo
library(dplyr, warn.conflicts = FALSE)
FB_tbl <- FANG %>%
    dplyr::filter(symbol == "FB")


# Number of tk_get_signature columns
n <- 29

test_xts <- FB_tbl %>%
    tk_xts(silent = TRUE)
test <- tk_augment_timeseries_signature(test_xts)
#> Warning in .check_tzones(e1, e2): 'tzone' attributes are inconsistent
str(test)
#> An xts object on 2013-01-02 / 2016-12-30 containing: 
#>   Data:    double [1008, 32]
#>   Columns: open, high, low, close, volume ... with 27 more columns
#>   Index:   Date [1008] (TZ: "UTC")
options(warn = 2)
traceback(tk_augment_timeseries_signature(test_xts))
#> Error in h(simpleError(msg, call)): error in evaluating the argument 'x' in selecting a method for function 'as_date': (converted from warning) 'tzone' attributes are inconsistent

^{Created on 2023-10-03 with reprex v2.0.2}

I added a expect_tz_warning() to make R CMD CHECK pass in the meantime. in #155

When this issue is fixed, we can delete expect_tz_warning() and replace all with expect_no_warning()

Edit: this warning is for R >= 4.3
https://cran.r-project.org/doc/manuals/r-release/NEWS.html

possibly relevant changes in R 4.3

• On platforms where (non-UTC) datetimes before 1902 (or before 1900 as with system functions on recent macOS) are guessed by extrapolating time zones from 1902-2037, there is a warning at the first use of extrapolation in a session. (As all time zones post 2037 are extrapolation, we do not warn on those.)

• (Platforms using --with-internal-tzone, including Windows and by default macOS). How years are printed in dates or date-times can be controlled by environment variable R_PAD_YEARS_BY_ZERO. The default remains to pad to 4 digits by zeroes, but setting value ‘⁠no⁠’ gives no padding (as used by default by glibc).

• as.Date.POSIXct(., tz) now treats several tz values, notably "GMT" as equivalent to "UTC", proposed and improved by Michael Chirico and Joshua Ulrich in PR#17674.