A fake Gem::RemoteFetcher
for use in tests or to avoid real live HTTP requests when testing code that uses RubyGems.
Example:
@fetcher = Gem::FakeFetcher.new @fetcher.data['http://gems.example.com/yaml'] = source_index.to_yaml Gem::RemoteFetcher.fetcher = @fetcher use nested array if multiple response is needed @fetcher.data['http://gems.example.com/sequence'] = [['Success', 200, 'OK'], ['Failed', 401, 'Unauthorized']] @fetcher.fetch_path('http://gems.example.com/sequence') # => ['Success', 200, 'OK'] @fetcher.fetch_path('http://gems.example.com/sequence') # => ['Failed', 401, 'Unauthorized'] # invoke RubyGems code paths = @fetcher.paths assert_equal 'http://gems.example.com/yaml', paths.shift assert paths.empty?, paths.join(', ')
See RubyGems' tests for more examples of FakeFetcher
.
# File rubygems/test_utilities.rb, line 77 def cache_update_path(uri, path = nil, update = true) if data = fetch_path(uri) open(path, 'wb') {|io| io.write data } if path and update data else Gem.read_binary(path) if path end end
# File rubygems/test_utilities.rb, line 135 def download(spec, source_uri, install_dir = Gem.dir) name = File.basename spec.cache_file path = if Dir.pwd == install_dir # see fetch_command install_dir else File.join install_dir, "cache" end path = File.join path, name if source_uri =~ /^http/ File.open(path, "wb") do |f| f.write fetch_path(File.join(source_uri, "gems", name)) end else FileUtils.cp source_uri, path end path end
# File rubygems/test_utilities.rb, line 156 def download_to_cache(dependency) found, _ = Gem::SpecFetcher.fetcher.spec_for_dependency dependency return if found.empty? spec, source = found.first download spec, source.uri.to_s end
# File rubygems/test_utilities.rb, line 64 def fetch_path(path, mtime = nil, head = false) data = find_data(path) if data.respond_to?(:call) data.call else if path.to_s.end_with?(".gz") and not data.nil? and not data.empty? data = Gem::Util.gunzip data end data end end
# File rubygems/test_utilities.rb, line 120 def fetch_size(path) path = path.to_s @paths << path raise ArgumentError, 'need full URI' unless path =~ %r{^http://} unless @data.key? path raise Gem::RemoteFetcher::FetchError.new("no data for #{path}", path) end data = @data[path] data.respond_to?(:call) ? data.call : data.length end
# File rubygems/test_utilities.rb, line 41 def find_data(path) return Gem.read_binary path.path if URI === path and 'file' == path.scheme if URI === path and "URI::#{path.scheme.upcase}" != path.class.name raise ArgumentError, "mismatch for scheme #{path.scheme} and class #{path.class}" end path = path.to_s @paths << path raise ArgumentError, 'need full URI' unless path.start_with?("https://", "http://") unless @data.key? path raise Gem::RemoteFetcher::FetchError.new("no data for #{path}", path) end if @data[path].kind_of?(Array) && @data[path].first.kind_of?(Array) @data[path].shift else @data[path] end end
Thanks, FakeWeb!
# File rubygems/test_utilities.rb, line 87 def open_uri_or_path(path) data = find_data(path) body, code, msg = data response = Net::HTTPResponse.send(:response_class, code.to_s).new("1.0", code.to_s, msg) response.instance_variable_set(:@body, body) response.instance_variable_set(:@read, true) response end
# File rubygems/test_utilities.rb, line 97 def request(uri, request_class, last_modified = nil) data = find_data(uri) body, code, msg = (data.respond_to?(:call) ? data.call : data) @last_request = request_class.new uri.request_uri yield @last_request if block_given? response = Net::HTTPResponse.send(:response_class, code.to_s).new("1.0", code.to_s, msg) response.instance_variable_set(:@body, body) response.instance_variable_set(:@read, true) response end