context("rgee: ee_date test")

library(rgee)
ee_Initialize()

# -------------------------------------------------------------------------
test_that("rdate_to_eedate I", {
  eedate <- rdate_to_eedate('2000-01-01')
  expect_true('ee.ee_date.Date' %in% class(eedate))
})

test_that("rdate_to_eedate II", {
  eedate <- rdate_to_eedate(date = '2000-01-01', timestamp = TRUE)
  expect_equal(eedate, 946684800000)
})

test_that("eedate_to_rdate I", {
  ee_date <- ee$Date$fromYMD(2017, 2, 3)
  eedate <- eedate_to_rdate(ee_date)
  expect_s3_class(eedate, 'POSIXct')
})

test_that("eedate_to_rdate II", {
  ee_date <- ee$Date$fromYMD(2017, 2, 3)
  eedate <- eedate_to_rdate(ee_date, timestamp = TRUE)
  expect_equal(eedate, 1.48608e+12)
})

test_that("ee_get_date_img", {
  l8 <- ee$Image('LANDSAT/LC08/C01/T1_TOA/LC08_044034_20140318')
  l8_date <- ee_get_date_img(l8)
  expect_equal(l8_date$image_id, "LANDSAT/LC08/C01/T1_TOA/LC08_044034_20140318")
  srtm <- ee$Image('CGIAR/SRTM90_V4')
  srtm_date <- ee_get_date_img(srtm, time_end = TRUE)
  expect_equal(srtm_date$image_id, "CGIAR/SRTM90_V4")
})

test_that("ee_get_date_ic", {
  mod11a2 <- ee$ImageCollection("MODIS/006/MOD11A2")$
    filter(ee$Filter$date('2001-01-01', '2001-03-31'))
  modis_date_01 <- ee_get_date_ic(x = mod11a2)
  modis_date_02 <- ee_get_date_ic(mod11a2,time_end = TRUE)
  expect_s3_class(modis_date_01, "data.frame")
  expect_s3_class(modis_date_02, "data.frame")
})

test_that("ee_get_date_ic", {
  ee_img <- ee$Image(0)
  expect_equal(ee_get_date_img(ee_img)[["image_id"]], "no_id")
  ee_ic <- ee$ImageCollection(c(ee_img, ee_img))
  expect_type(ee_get_date_ic(x = ee_ic)[["id"]], "character")
})