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Testing IP2Location Geolocation Integration in Geocoder

This test suite validates the IP2Location integration in the Geocoder gem, focusing on API endpoint construction, IP address lookups, and response handling. It ensures accurate geolocation data retrieval and proper handling of special IP addresses.

Test Coverage Overview

The test suite provides comprehensive coverage of IP2Location functionality, including:

API URL construction with and without package parameters
Geolocation lookups for public IP addresses
Special case handling for loopback and private IP addresses
Extended data retrieval with different package configurations

Implementation Analysis

The testing approach uses Ruby’s test framework with the GeocoderTestCase base class. It employs a systematic pattern of setup configuration and discrete test methods to verify each aspect of the IP2Location integration.

Key patterns include configuration management, API URL validation, and response object verification.

Technical Details

Testing Framework: Ruby Test::Unit
Setup Requirements: API key configuration
Mock Data: Sample IP addresses (8.8.8.8, 127.0.0.1, 172.19.0.1)
Configuration Options: Package levels (WS3)

Best Practices Demonstrated

The test suite exemplifies strong testing practices through isolated test cases, proper setup and teardown management, and comprehensive edge case coverage.

Isolated test methods for specific functionality
Configuration management in setup
Edge case handling for special IP addresses
Explicit assertions for expected outcomes

alexreisner/geocoder

test/unit/lookups/ip2location_test.rb

            
# encoding: utf-8
require 'test_helper'

class Ip2locationTest < GeocoderTestCase

  def setup
    super
    Geocoder.configure(ip_lookup: :ip2location)
    set_api_key!(:ip2location)
  end

  def test_ip2location_query_url
    query = Geocoder::Query.new('8.8.8.8')
    assert_equal 'http://api.ip2location.com/v2/?ip=8.8.8.8&key=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa', query.url
  end

  def test_ip2location_query_url_with_package
    Geocoder.configure(ip2location: {package: 'WS3'})
    query = Geocoder::Query.new('8.8.8.8')
    assert_equal 'http://api.ip2location.com/v2/?ip=8.8.8.8&key=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaa&package=WS3', query.url
  end

  def test_ip2location_lookup_address
    result = Geocoder.search("8.8.8.8").first
    assert_equal "US", result.country_code
  end

  def test_ip2location_lookup_loopback_address
    result = Geocoder.search("127.0.0.1").first
    assert_equal "INVALID IP ADDRESS", result.country_code
  end

  def test_ip2location_lookup_private_address
    result = Geocoder.search("172.19.0.1").first
    assert_equal "INVALID IP ADDRESS", result.country_code
  end

  def test_ip2location_extra_data
    Geocoder.configure(:ip2location => {:package => "WS3"})
    result = Geocoder.search("8.8.8.8").first
    assert_equal "United States", result.country_name
    assert_equal "California", result.region_name
    assert_equal "Mountain View", result.city_name
  end
end