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Testing HTTP Response Header Handling in teamcapybara/capybara

This test suite examines Capybara’s response headers functionality, specifically focusing on HTTP header handling during web page interactions. The tests verify proper header retrieval and content type validation for web responses in Capybara-driven browser sessions.

Test Coverage Overview

The test coverage focuses on Capybara’s ability to access and verify HTTP response headers during web page navigation.

Key functionality includes:

Response header access verification
Content-Type header validation
Simple HTML page response testing

The suite specifically tests the #response_headers method functionality.

Implementation Analysis

The testing approach employs Capybara’s SpecHelper framework to create isolated test scenarios for header validation.

The implementation uses a focused single-responsibility test pattern with:

Direct session interaction through @session object
Explicit header property checking
Regular expression matching for content type verification

Technical Details

Testing tools and configuration include:

Capybara SpecHelper test framework
RSpec expectation syntax
Requires response_headers feature flag
Uses /with_simple_html test fixture
Content-Type header validation using regex pattern matching

Best Practices Demonstrated

The test suite exemplifies several testing best practices in web automation.

Notable practices include:

Feature requirement specification using :requires tag
Isolated test scope with single assertion
Clear test description and intention
Proper setup and teardown handling via SpecHelper
Explicit expectation matching

teamcapybara/capybara

lib/capybara/spec/session/headers_spec.rb

            
# frozen_string_literal: true

Capybara::SpecHelper.spec '#response_headers' do
  it 'should return response headers', requires: [:response_headers] do
    @session.visit('/with_simple_html')
    expect(@session.response_headers['Content-Type']).to match %r{text/html}
  end
end