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Testing LocationIQ Geocoding Service Integration in alexreisner/geocoder

This test suite validates the LocationIQ geocoding service integration within the Geocoder gem, focusing on API key handling and error scenarios. It extends the base Nominatim test functionality while adding LocationIQ-specific validation.

Test Coverage Overview

The test suite provides comprehensive coverage of LocationIQ API interactions and error handling scenarios.

API key validation and URL construction testing
Error handling for invalid API keys
Request denial scenarios
Rate limiting validation
Invalid request handling

Implementation Analysis

The testing approach inherits from NominatimTest while implementing LocationIQ-specific configurations and assertions. It utilizes Ruby’s test framework with setup methods for API key configuration and employs assertion patterns to verify expected behaviors and error handling.

The implementation follows a structured pattern of configuring test scenarios and validating responses through exception handling.

Technical Details

Key technical components include:

Ruby test framework integration
Geocoder gem configuration methods
Exception handling validation
API key management
HTTP request validation

Best Practices Demonstrated

The test suite exemplifies several testing best practices including proper setup isolation, comprehensive error scenario coverage, and clear test case organization. Each test focuses on a specific functionality aspect, maintaining single responsibility principle while ensuring complete API interaction validation.

Isolated test cases
Comprehensive error handling
Clear test naming conventions
Proper inheritance structure

alexreisner/geocoder

test/unit/lookups/location_iq_test.rb

            
# encoding: utf-8
require 'unit/lookups/nominatim_test'
require 'test_helper'

class LocationIq < NominatimTest

  def setup
    super
    Geocoder.configure(lookup: :location_iq)
    set_api_key!(:location_iq)
  end

  def test_url_contains_api_key
    Geocoder.configure(location_iq: {api_key: "abc123"})
    query = Geocoder::Query.new("Leadville, CO")
    assert_match(/key=abc123/, query.url)
  end

  def test_raises_exception_with_invalid_api_key
    Geocoder.configure(always_raise: [Geocoder::InvalidApiKey])
    assert_raises Geocoder::InvalidApiKey do
      Geocoder.search("invalid api key")
    end
  end

  def test_raises_exception_with_request_denied
    Geocoder.configure(always_raise: [Geocoder::RequestDenied])
    assert_raises Geocoder::RequestDenied do
      Geocoder.search("request denied")
    end
  end

  def test_raises_exception_with_rate_limited
    Geocoder.configure(always_raise: [Geocoder::OverQueryLimitError])
    assert_raises Geocoder::OverQueryLimitError do
      Geocoder.search("over limit")
    end
  end

  def test_raises_exception_with_invalid_request
    Geocoder.configure(always_raise: [Geocoder::InvalidRequest])
    assert_raises Geocoder::InvalidRequest do
      Geocoder.search("invalid request")
    end
  end
end