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spec_lint.rb
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require 'stringio' require 'tempfile' require 'rack/lint' require 'rack/mock' describe Rack::Lint do def env(*args) Rack::MockRequest.env_for("/", *args) end should "pass valid request" do lambda { Rack::Lint.new(lambda { |env| [200, {"Content-type" => "test/plain", "Content-length" => "3"}, ["foo"]] }).call(env({})) }.should.not.raise end should "notice fatal errors" do lambda { Rack::Lint.new(nil).call }.should.raise(Rack::Lint::LintError). message.should.match(/No env given/) end should "notice environment errors" do lambda { Rack::Lint.new(nil).call 5 }.should.raise(Rack::Lint::LintError). message.should.match(/not a Hash/) lambda { e = env e.delete("REQUEST_METHOD") Rack::Lint.new(nil).call(e) }.should.raise(Rack::Lint::LintError). message.should.match(/missing required key REQUEST_METHOD/) lambda { e = env e.delete("SERVER_NAME") Rack::Lint.new(nil).call(e) }.should.raise(Rack::Lint::LintError). message.should.match(/missing required key SERVER_NAME/) lambda { Rack::Lint.new(nil).call(env("HTTP_CONTENT_TYPE" => "text/plain")) }.should.raise(Rack::Lint::LintError). message.should.match(/contains HTTP_CONTENT_TYPE/) lambda { Rack::Lint.new(nil).call(env("HTTP_CONTENT_LENGTH" => "42")) }.should.raise(Rack::Lint::LintError). message.should.match(/contains HTTP_CONTENT_LENGTH/) lambda { Rack::Lint.new(nil).call(env("FOO" => Object.new)) }.should.raise(Rack::Lint::LintError). message.should.match(/non-string value/) lambda { Rack::Lint.new(nil).call(env("rack.version" => "0.2")) }.should.raise(Rack::Lint::LintError). message.should.match(/must be an Array/) lambda { Rack::Lint.new(nil).call(env("rack.url_scheme" => "gopher")) }.should.raise(Rack::Lint::LintError). message.should.match(/url_scheme unknown/) lambda { Rack::Lint.new(nil).call(env("rack.session" => [])) }.should.raise(Rack::Lint::LintError). message.should.equal("session [] must respond to store and []=") lambda { Rack::Lint.new(nil).call(env("rack.logger" => [])) }.should.raise(Rack::Lint::LintError). message.should.equal("logger [] must respond to info") lambda { Rack::Lint.new(nil).call(env("rack.multipart.buffer_size" => 0)) }.should.raise(Rack::Lint::LintError). message.should.equal("rack.multipart.buffer_size must be an Integer > 0 if specified") lambda { Rack::Lint.new(nil).call(env("rack.multipart.tempfile_factory" => Tempfile)) }.should.raise(Rack::Lint::LintError). message.should.equal("rack.multipart.tempfile_factory must respond to #call") lambda { Rack::Lint.new(lambda { |env| env['rack.multipart.tempfile_factory'].call("testfile", "text/plain") }).call(env("rack.multipart.tempfile_factory" => lambda { |filename, content_type| Object.new })) }.should.raise(Rack::Lint::LintError). message.should.equal("rack.multipart.tempfile_factory return value must respond to #<<") lambda { Rack::Lint.new(nil).call(env("REQUEST_METHOD" => "FUCKUP?")) }.should.raise(Rack::Lint::LintError). message.should.match(/REQUEST_METHOD/) lambda { Rack::Lint.new(nil).call(env("SCRIPT_NAME" => "howdy")) }.should.raise(Rack::Lint::LintError). message.should.match(/must start with/) lambda { Rack::Lint.new(nil).call(env("PATH_INFO" => "../foo")) }.should.raise(Rack::Lint::LintError). message.should.match(/must start with/) lambda { Rack::Lint.new(nil).call(env("CONTENT_LENGTH" => "xcii")) }.should.raise(Rack::Lint::LintError). message.should.match(/Invalid CONTENT_LENGTH/) lambda { e = env e.delete("PATH_INFO") e.delete("SCRIPT_NAME") Rack::Lint.new(nil).call(e) }.should.raise(Rack::Lint::LintError). message.should.match(/One of .* must be set/) lambda { Rack::Lint.new(nil).call(env("SCRIPT_NAME" => "/")) }.should.raise(Rack::Lint::LintError). message.should.match(/cannot be .* make it ''/) end should "notice input errors" do lambda { Rack::Lint.new(nil).call(env("rack.input" => "")) }.should.raise(Rack::Lint::LintError). message.should.match(/does not respond to #gets/) lambda { input = Object.new def input.binmode? false end Rack::Lint.new(nil).call(env("rack.input" => input)) }.should.raise(Rack::Lint::LintError). message.should.match(/is not opened in binary mode/) lambda { input = Object.new def input.external_encoding result = Object.new def result.name "US-ASCII" end result end Rack::Lint.new(nil).call(env("rack.input" => input)) }.should.raise(Rack::Lint::LintError). message.should.match(/does not have ASCII-8BIT as its external encoding/) end should "notice error errors" do lambda { Rack::Lint.new(nil).call(env("rack.errors" => "")) }.should.raise(Rack::Lint::LintError). message.should.match(/does not respond to #puts/) end should "notice status errors" do lambda { Rack::Lint.new(lambda { |env| ["cc", {}, ""] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/must be >=100 seen as integer/) lambda { Rack::Lint.new(lambda { |env| [42, {}, ""] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/must be >=100 seen as integer/) end should "notice header errors" do lambda { Rack::Lint.new(lambda { |env| [200, Object.new, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.equal("headers object should respond to #each, but doesn't (got Object as headers)") lambda { Rack::Lint.new(lambda { |env| [200, {true=>false}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.equal("header key must be a string, was TrueClass") lambda { Rack::Lint.new(lambda { |env| [200, {"Status" => "404"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/must not contain Status/) # From RFC 7230:<F24><F25> # Most HTTP header field values are defined using common syntax # components (token, quoted-string, and comment) separated by # whitespace or specific delimiting characters. Delimiters are chosen # from the set of US-ASCII visual characters not allowed in a token # (DQUOTE and "(),/:;<=>?@[\]{}"). # # token = 1*tchar # # tchar = "!" / "#" / "$" / "%" / "&" / "'" / "*" # / "+" / "-" / "." / "^" / "_" / "`" / "|" / "~" # / DIGIT / ALPHA # ; any VCHAR, except delimiters invalid_headers = 0.upto(31).map(&:chr) + %W<( ) , / : ; < = > ? @ [ \\ ] { } \x7F> invalid_headers.each do |invalid_header| lambda { Rack::Lint.new(lambda { |env| [200, {invalid_header => "text/plain"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError, "on invalid header: #{invalid_header}"). message.should.equal("invalid header name: #{invalid_header}") end valid_headers = 0.upto(127).map(&:chr) - invalid_headers valid_headers.each do |valid_header| lambda { Rack::Lint.new(lambda { |env| [200, {valid_header => "text/plain"}, []] }).call(env({})) }.should.not.raise(Rack::Lint::LintError, "on valid header: #{valid_header}") end lambda { Rack::Lint.new(lambda { |env| [200, {"Foo" => Object.new}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.equal("a header value must be a String, but the value of 'Foo' is a Object") lambda { Rack::Lint.new(lambda { |env| [200, {"Foo" => [1, 2, 3]}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.equal("a header value must be a String, but the value of 'Foo' is a Array") lambda { Rack::Lint.new(lambda { |env| [200, {"Foo-Bar" => "text\000plain"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/invalid header/) # line ends (010) should be allowed in header values. lambda { Rack::Lint.new(lambda { |env| [200, {"Foo-Bar" => "one\ntwo\nthree", "Content-Length" => "0", "Content-Type" => "text/plain" }, []] }).call(env({})) }.should.not.raise(Rack::Lint::LintError) # non-Hash header responses should be allowed lambda { Rack::Lint.new(lambda { |env| [200, [%w(Content-Type text/plain), %w(Content-Length 0)], []] }).call(env({})) }.should.not.raise(TypeError) end should "notice content-type errors" do # lambda { # Rack::Lint.new(lambda { |env| # [200, {"Content-length" => "0"}, []] # }).call(env({})) # }.should.raise(Rack::Lint::LintError). # message.should.match(/No Content-Type/) [100, 101, 204, 205, 304].each do |status| lambda { Rack::Lint.new(lambda { |env| [status, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/Content-Type header found/) end end should "notice content-length errors" do [100, 101, 204, 205, 304].each do |status| lambda { Rack::Lint.new(lambda { |env| [status, {"Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/Content-Length header found/) end lambda { Rack::Lint.new(lambda { |env| [200, {"Content-type" => "text/plain", "Content-Length" => "1"}, []] }).call(env({}))[2].each { } }.should.raise(Rack::Lint::LintError). message.should.match(/Content-Length header was 1, but should be 0/) end should "notice body errors" do lambda { body = Rack::Lint.new(lambda { |env| [200, {"Content-type" => "text/plain","Content-length" => "3"}, [1,2,3]] }).call(env({}))[2] body.each { |part| } }.should.raise(Rack::Lint::LintError). message.should.match(/yielded non-string/) end should "notice input handling errors" do lambda { Rack::Lint.new(lambda { |env| env["rack.input"].gets("\r\n") [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/gets called with arguments/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(1, 2, 3) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/read called with too many arguments/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read("foo") [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/read called with non-integer and non-nil length/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(-1) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/read called with a negative length/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(nil, nil) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/read called with non-String buffer/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(nil, 1) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/read called with non-String buffer/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].rewind(0) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/rewind called with arguments/) weirdio = Object.new class << weirdio def gets 42 end def read 23 end def each yield 23 yield 42 end def rewind raise Errno::ESPIPE, "Errno::ESPIPE" end end eof_weirdio = Object.new class << eof_weirdio def gets nil end def read(*args) nil end def each end def rewind end end lambda { Rack::Lint.new(lambda { |env| env["rack.input"].gets [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env("rack.input" => weirdio)) }.should.raise(Rack::Lint::LintError). message.should.match(/gets didn't return a String/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].each { |x| } [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env("rack.input" => weirdio)) }.should.raise(Rack::Lint::LintError). message.should.match(/each didn't yield a String/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env("rack.input" => weirdio)) }.should.raise(Rack::Lint::LintError). message.should.match(/read didn't return nil or a String/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env("rack.input" => eof_weirdio)) }.should.raise(Rack::Lint::LintError). message.should.match(/read\(nil\) returned nil on EOF/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].rewind [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env("rack.input" => weirdio)) }.should.raise(Rack::Lint::LintError). message.should.match(/rewind raised Errno::ESPIPE/) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].close [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/close must not be called/) end should "notice error handling errors" do lambda { Rack::Lint.new(lambda { |env| env["rack.errors"].write(42) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/write not called with a String/) lambda { Rack::Lint.new(lambda { |env| env["rack.errors"].close [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({})) }.should.raise(Rack::Lint::LintError). message.should.match(/close must not be called/) end should "notice HEAD errors" do lambda { Rack::Lint.new(lambda { |env| [200, {"Content-type" => "test/plain", "Content-length" => "3"}, []] }).call(env({"REQUEST_METHOD" => "HEAD"})) }.should.not.raise lambda { Rack::Lint.new(lambda { |env| [200, {"Content-type" => "test/plain", "Content-length" => "3"}, ["foo"]] }).call(env({"REQUEST_METHOD" => "HEAD"}))[2].each { } }.should.raise(Rack::Lint::LintError). message.should.match(/body was given for HEAD/) end should "pass valid read calls" do hello_str = "hello world" hello_str.force_encoding("ASCII-8BIT") if hello_str.respond_to? :force_encoding lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({"rack.input" => StringIO.new(hello_str)})) }.should.not.raise(Rack::Lint::LintError) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(0) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({"rack.input" => StringIO.new(hello_str)})) }.should.not.raise(Rack::Lint::LintError) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(1) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({"rack.input" => StringIO.new(hello_str)})) }.should.not.raise(Rack::Lint::LintError) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(nil) [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({"rack.input" => StringIO.new(hello_str)})) }.should.not.raise(Rack::Lint::LintError) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(nil, '') [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({"rack.input" => StringIO.new(hello_str)})) }.should.not.raise(Rack::Lint::LintError) lambda { Rack::Lint.new(lambda { |env| env["rack.input"].read(1, '') [201, {"Content-type" => "text/plain", "Content-length" => "0"}, []] }).call(env({"rack.input" => StringIO.new(hello_str)})) }.should.not.raise(Rack::Lint::LintError) end end describe "Rack::Lint::InputWrapper" do should "delegate :rewind to underlying IO object" do io = StringIO.new("123") wrapper = Rack::Lint::InputWrapper.new(io) wrapper.read.should.equal "123" wrapper.read.should.equal "" wrapper.rewind wrapper.read.should.equal "123" end end