context("utils")


test_that("lat and lon columns found", {
  
  testthat::skip_on_cran()
  
  df <- data.frame(lats = 1:3, long = 1:3)
  expect_true(googlePolylines:::find_lat_column(names(df)) == "lats")
  expect_true(googlePolylines:::find_lon_column(names(df)) == "long")
  
  df <- data.frame(myLat = 1:3, myLongitudes = 1:3)
  expect_error(googlePolylines:::find_lat_column(names(df)),"Couldn't infer latitude column")
  expect_error(googlePolylines:::find_lon_column(names(df)),"Couldn't infer longitude column")
  
  df <- data.frame(shape_pt_lat = 1, shape_pt_lon = 2)
  expect_equal( googlePolylines:::find_lat_column(names(df)), "shape_pt_lat" )
  expect_equal( googlePolylines:::find_lon_column(names(df)), "shape_pt_lon" ) 
  
})