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|
# frozen_string_literal: true
require "spec_helper"
describe "SecureHeaders::Railtie" do
# Store initializer blocks so we can execute them in tests
let(:initializer_blocks) { {} }
let(:default_headers) { {} }
before do
# Clean up any previous Rails/ActiveSupport definitions
Object.send(:remove_const, :Rails) if defined?(Rails)
Object.send(:remove_const, :ActiveSupport) if defined?(ActiveSupport)
# Remove the SecureHeaders::Railtie if it was previously defined
SecureHeaders.send(:remove_const, :Railtie) if defined?(SecureHeaders::Railtie)
blocks = initializer_blocks
headers = default_headers
# Mock ActiveSupport.on_load to immediately execute the block
stub_const("ActiveSupport", Module.new do
define_singleton_method(:on_load) do |name, &block|
block.call if block
end
end)
# Create mock Rails module with application config
rails_module = Module.new do
# Create a mock Railtie base class
const_set(:Railtie, Class.new do
define_singleton_method(:isolate_namespace) { |*| }
define_singleton_method(:initializer) do |name, &block|
blocks[name] = block
end
define_singleton_method(:rake_tasks) { |&block| }
end)
# Create mock application with config
config_action_dispatch = Struct.new(:default_headers).new(headers)
config_middleware = Object.new.tap do |mw|
mw.define_singleton_method(:insert_before) { |*| }
end
config = Struct.new(:action_dispatch, :middleware).new(config_action_dispatch, config_middleware)
application = Struct.new(:config).new(config)
define_singleton_method(:application) { application }
end
stub_const("Rails", rails_module)
end
def load_railtie
# Load the railtie file fresh
begin
load File.expand_path("../../../../lib/secure_headers/railtie.rb", __FILE__)
rescue LoadError
spec = Gem::Specification.find_by_name("secure_headers")
railtie_path = File.join(spec.gem_dir, "lib", "secure_headers", "railtie.rb")
if File.exist?(railtie_path)
load railtie_path
else
raise LoadError, "secure_headers railtie not found at #{railtie_path}"
end
end
end
def run_action_controller_initializer
initializer_blocks["secure_headers.action_controller"]&.call
end
describe "case-insensitive header removal" do
context "with Rails default headers (capitalized format like 'X-Frame-Options')" do
let(:default_headers) do
{
"X-Frame-Options" => "SAMEORIGIN",
"X-XSS-Protection" => "0",
"X-Content-Type-Options" => "nosniff",
"X-Permitted-Cross-Domain-Policies" => "none",
"X-Download-Options" => "noopen",
"Referrer-Policy" => "strict-origin-when-cross-origin"
}
end
it "removes capitalized conflicting headers from Rails defaults" do
load_railtie
run_action_controller_initializer
expect(default_headers).to be_empty
end
end
context "with lowercase headers (Rack 3+ format)" do
let(:default_headers) do
{
"x-frame-options" => "SAMEORIGIN",
"x-xss-protection" => "0",
"x-content-type-options" => "nosniff"
}
end
it "removes lowercase conflicting headers from Rails defaults" do
load_railtie
run_action_controller_initializer
expect(default_headers).to be_empty
end
end
context "with mixed-case headers" do
let(:default_headers) do
{
"X-FRAME-OPTIONS" => "SAMEORIGIN",
"x-Xss-Protection" => "0",
"X-Content-Type-OPTIONS" => "nosniff"
}
end
it "removes mixed-case conflicting headers from Rails defaults" do
load_railtie
run_action_controller_initializer
expect(default_headers).to be_empty
end
end
context "preserving non-conflicting headers" do
let(:default_headers) do
{
"X-Frame-Options" => "SAMEORIGIN",
"X-Custom-Header" => "custom-value",
"My-Application-Header" => "app-value"
}
end
it "removes only conflicting headers and preserves custom headers" do
load_railtie
run_action_controller_initializer
expect(default_headers).to eq({
"X-Custom-Header" => "custom-value",
"My-Application-Header" => "app-value"
})
end
end
context "with nil default_headers" do
let(:default_headers) { nil }
it "handles nil default_headers gracefully" do
load_railtie
expect { run_action_controller_initializer }.not_to raise_error
end
end
context "CSP and HSTS headers" do
let(:default_headers) do
{
"Content-Security-Policy" => "default-src 'self'",
"Content-Security-Policy-Report-Only" => "default-src 'self'",
"Strict-Transport-Security" => "max-age=31536000"
}
end
it "removes CSP and HSTS headers regardless of case" do
load_railtie
run_action_controller_initializer
expect(default_headers).to be_empty
end
end
end
end
|
