Remove usage of non-standard EST time zone from tests (#106)

Author: DavisVaughan

NEWS.md

@@ -1,5 +1,7 @@
 # tibbletime (development version)
 
+* Removed usage of the non-standard `EST` time zone from tests.
+
 # tibbletime 0.1.8
 
 * Multi-week periods are no longer allowed. These previously threw a warning

tests/testthat/test_create_series.R

@@ -50,8 +50,8 @@ test_that("Can create vector series", {
 })
 
 test_that("Can alter time zone", {
-  series <- create_series(~'2013-01-01', '1 day', as_vector = TRUE, tz = "EST")
-  check  <- as.POSIXct("2013-01-01", tz = "EST")
+  series <- create_series(~'2013-01-01', '1 day', as_vector = TRUE, tz = "America/New_York")
+  check  <- as.POSIXct("2013-01-01", tz = "America/New_York")
 
   expect_equal(series, check)
 })