require 'tempfile'
require 'rubygems'
require 'rubygems/remote_fetcher'
##
# 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
#
# # 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.
class Gem::FakeFetcher
attr_reader :data
attr_reader :last_request
attr_reader :api_endpoints
attr_accessor :paths
def initialize
@data = {}
@paths = []
@api_endpoints = {}
end
def api_endpoint(uri)
@api_endpoints[uri] || uri
end
def find_data(path)
if URI === path and "URI::#{path.scheme.upcase}" != path.class.name then
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 =~ %r'^https?://'
unless @data.key? path then
raise Gem::RemoteFetcher::FetchError.new("no data for #{path}", path)
end
@data[path]
end
def fetch_path path, mtime = nil, head = false
data = find_data(path)
if data.respond_to?(:call) then
data.call
else
if path.to_s =~ /gz$/ and not data.nil? and not data.empty? then
data = Gem.gunzip data
end
data
end
end
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
# Thanks, FakeWeb!
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
def request(uri, request_class, last_modified = nil)
data = find_data(uri)
body, code, msg = 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
def fetch_size(path)
path = path.to_s
@paths << path
raise ArgumentError, 'need full URI' unless path =~ %r'^http://'
unless @data.key? path then
raise Gem::RemoteFetcher::FetchError.new("no data for #{path}", path)
end
data = @data[path]
data.respond_to?(:call) ? data.call : data.length
end
def download spec, source_uri, install_dir = Gem.dir
name = File.basename spec.cache_file
path = if Dir.pwd == install_dir then # see fetch_command
install_dir
else
File.join install_dir, "cache"
end
path = File.join path, name
if source_uri =~ /^http/ then
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
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
end
# :stopdoc:
class Gem::RemoteFetcher
def self.fetcher=(fetcher)
@fetcher = fetcher
end
end
# :startdoc:
##
# A StringIO duck-typed class that uses Tempfile instead of String as the
# backing store.
#
# This is available when rubygems/test_utilities is required.
#--
# This class was added to flush out problems in Rubinius' IO implementation.
class TempIO < Tempfile
def initialize(string = '')
super "TempIO"
binmode
write string
rewind
end
def string
flush
Gem.read_binary path
end
end
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