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Testing GeoIP2 Location Services in Geocoder

This test suite validates the GeoIP2 lookup functionality in the Geocoder gem, focusing on IP address geolocation and localization features. The tests ensure accurate location data retrieval and proper handling of different language localizations.

Test Coverage Overview

The test suite comprehensively covers GeoIP2 location data retrieval and validation.

Key areas tested include:

IP address location attribute extraction
Handling of loopback addresses
Language localization support
Fallback behavior for unsupported languages

Implementation Analysis

The testing approach uses Ruby’s unit testing framework with a structured setup for GeoIP2 configuration. The tests employ assertion-based validation to verify location data accuracy and localization functionality.

Notable patterns include:

Consistent setup configuration
Systematic attribute verification
Language switching scenarios

Technical Details

Testing components include:

Ruby test framework
GeocoderTestCase as base class
GeoIP2 database configuration
Custom test file setup
Language configuration handling

Best Practices Demonstrated

The test suite demonstrates several testing best practices:

Isolated test cases with clear purposes
Comprehensive attribute verification
Edge case handling (loopback addresses)
Internationalization testing
Fallback scenario validation

alexreisner/geocoder

test/unit/lookups/geoip2_test.rb

            
# encoding: utf-8
require 'test_helper'

class Geoip2Test < GeocoderTestCase

  def setup
    super
    Geocoder.configure(ip_lookup: :geoip2, file: 'test_file')
  end

  def test_result_attributes
    result = Geocoder.search('8.8.8.8').first
    assert_equal 'Mountain View, CA 94043, United States', result.address
    assert_equal 'Mountain View', result.city
    assert_equal 'CA', result.state_code
    assert_equal 'California', result.state
    assert_equal 'United States', result.country
    assert_equal 'US', result.country_code
    assert_equal '94043', result.postal_code
    assert_equal 37.41919999999999, result.latitude
    assert_equal(-122.0574, result.longitude)
    assert_equal [37.41919999999999, -122.0574], result.coordinates
  end

  def test_loopback
    results = Geocoder.search('127.0.0.1')
    assert_equal [], results
  end

  def test_localization
    result = Geocoder.search('8.8.8.8').first

    Geocoder::Configuration.language = :ru
    assert_equal 'Маунтин-Вью', result.city
  end

  def test_dynamic_localization
    result = Geocoder.search('8.8.8.8').first

    result.language = :ru

    assert_equal 'Маунтин-Вью', result.city
  end

  def test_dynamic_localization_fallback
    result = Geocoder.search('8.8.8.8').first

    result.language = :unsupported_language

    assert_equal 'Mountain View', result.city
    assert_equal 'California', result.state
    assert_equal 'United States', result.country
  end
end