proj4_srs_data_test.rb

# frozen_string_literal: true

require "test_helper"

class TestProj4SRSData < Minitest::Test # :nodoc:
  def test_epsg_4326
    db_ = RGeo::CoordSys::SRSDatabase::Proj4Data.new("epsg")
    entry_ = db_.get(4326)
    allowed_vals_ = [
      "+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs", # Proj 4.7
      "+proj=longlat +datum=WGS84 +no_defs" # Proj 4.8
    ]
    assert(allowed_vals_.include?(entry_.proj4.original_str))
    assert_equal("WGS 84", entry_.name)
  end

  def test_epsg_3857
    db_ = RGeo::CoordSys::SRSDatabase::Proj4Data.new("epsg")
    entry_ = db_.get(3857)
    # some versions return "+wktext +no_defs", some "+wktext  +no_defs"
    assert_equal "+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs",
      entry_.proj4.original_str.gsub("  ", " ")
    assert_equal "WGS 84 / Pseudo-Mercator", entry_.name
  end

  def test_nad83_4601
    db_ = RGeo::CoordSys::SRSDatabase::Proj4Data.new("nad83")
    entry_ = db_.get(4601)
    assert_equal("+proj=lcc  +datum=NAD83 +lon_0=-120d50 +lat_1=48d44 +lat_2=47d30 +lat_0=47 +x_0=500000 +y_0=0 +no_defs", entry_.proj4.original_str)
    assert_equal("4601: washington north: nad83", entry_.name)
  end
end