X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=contrib%2Fsb-simple-streams%2Fsimple-stream-tests.lisp;h=20c5a8efc9214893a1a2892021385d13c018396d;hb=f057566fe993f008a9b34dc87b026e7c8ef2611d;hp=9664814ab8a811779fdb723570250834c9881322;hpb=ac85367426b222612311c5cf7b061ff89c64d825;p=sbcl.git

diff --git a/contrib/sb-simple-streams/simple-stream-tests.lisp b/contrib/sb-simple-streams/simple-stream-tests.lisp
index 9664814..20c5a8e 100644
--- a/contrib/sb-simple-streams/simple-stream-tests.lisp
+++ b/contrib/sb-simple-streams/simple-stream-tests.lisp
@@ -6,70 +6,964 @@
 
 (in-package #:sb-simple-streams-test)
 
-(defparameter *dumb-string* "This file created by simple-stream-tests.lisp. Nothing to see here, move along.")
+(defparameter *dumb-string*
+  "This file was created by simple-stream-tests.lisp. Nothing to see here, move along.")
 
-(defparameter *test-path* (merge-pathnames
-                           (make-pathname :name nil :type nil :version nil)
-                           *load-truename*))
+(defparameter *test-path*
+  (merge-pathnames (make-pathname :name :unspecific :type :unspecific
+                                  :version :unspecific)
+                   *load-truename*)
+  "Directory for temporary test files.")
 
-(eval-when (:load-toplevel) (ensure-directories-exist *test-path*))
+(defparameter *test-file*
+  (merge-pathnames #p"test-data.tmp" *test-path*))
+
+(eval-when (:load-toplevel) (ensure-directories-exist *test-path* :verbose t))
+
+;;; Non-destructive functional analog of REMF
+(defun remove-key (key list)
+  (loop for (current-key val . rest) on list by #'cddr
+        until (eql current-key key)
+        collect current-key into result
+        collect val into result
+        finally (return (nconc result rest))))
+
+(defun create-test-file (&key (filename *test-file*) (content *dumb-string*))
+  (with-open-file (s filename :direction :output
+                     :if-does-not-exist :create
+                     :if-exists :supersede)
+    (write-sequence content s)))
+
+(defun remove-test-file (&key (filename *test-file*))
+  (delete-file filename))
+
+(defmacro with-test-file ((stream file &rest open-arguments
+                                  &key (delete-afterwards t)
+                                  initial-content
+                                  &allow-other-keys)
+                          &body body)
+  (setq open-arguments (remove-key :delete-afterwards open-arguments))
+  (setq open-arguments (remove-key :initial-content open-arguments))
+  (if initial-content
+      (let ((create-file-stream (gensym)))
+        `(progn
+           (with-open-file (,create-file-stream ,file :direction :output
+                                                :if-exists :supersede
+                                                :if-does-not-exist :create)
+             (write-sequence ,initial-content ,create-file-stream))
+           (unwind-protect
+                (with-open-file (,stream ,file ,@open-arguments)
+                  (progn ,@body))
+             ,(when delete-afterwards `(ignore-errors (delete-file ,file))))))
+      `(unwind-protect
+            (with-open-file (,stream ,file ,@open-arguments)
+              (progn ,@body))
+         ,(when delete-afterwards `(ignore-errors (delete-file ,file))))))
+
+(deftest non-existent-class
+  (handler-case
+      (with-test-file (s *test-file* :class 'non-existent-stream)
+        nil)
+    ;; find-class will raise a simple-error
+    (simple-error (c) (search "There is no class" (simple-condition-format-control c))))
+  0)
+
+(deftest non-stream-class
+  (handler-case
+      (with-test-file (s *test-file* :class 'standard-class)
+        nil)
+    ;; Will fall through sb-simple-streams:open as it is no stream class.
+    (simple-error (c) (search "Don't know how to handle" (simple-condition-format-control c))))
+  0)
 
 (deftest create-file-1
-  (let* ((file (merge-pathnames #p"test-data.txt" *test-path*))
-         (stream-object (make-instance 'file-simple-stream
-                                      :filename file
-                                      :direction :output
-                                      :if-exists :overwrite)))
+    ;; Create a file-simple-stream, write data.
     (prog1
-        (with-open-stream (s stream-object)
-           (string= (write-string *dumb-string* s) *dumb-string*))
-      (delete-file file)))
+        (with-open-stream (s (make-instance 'file-simple-stream
+                                            :filename *test-file*
+                                            :direction :output
+                                            :if-exists :overwrite
+                                            :if-does-not-exist :create))
+          (string= (write-string *dumb-string* s) *dumb-string*))
+      (delete-file *test-file*))
   t)
 
 (deftest create-file-2
-  (let ((file (merge-pathnames #p"test-data.txt" *test-path*)))
-    (prog1
-        (with-open-file (s file
-                           :class 'file-simple-stream
-                           :direction :output :if-exists :overwrite)
-           (string= (write-string *dumb-string* s) *dumb-string*))
-      (delete-file file)))
+    ;; Create a file-simple-stream via :class argument to open, write data.
+    (with-test-file (s *test-file* :class 'file-simple-stream
+                       :direction :output :if-exists :overwrite
+                       :if-does-not-exist :create)
+      (string= (write-string *dumb-string* s) *dumb-string*))
   t)
 
 (deftest create-read-file-1
-  (let ((result t)
-        (file (merge-pathnames #p"test-data.txt" *test-path*)))
-    (let ((stream-object (make-instance 'file-simple-stream
-                                      :filename file
-                                      :direction :output
-                                      :if-exists :overwrite)))
-      (with-open-stream (s stream-object)
-         (setf result (and result (string= (write-string *dumb-string* s)
-                                           *dumb-string*)))
-         (terpri s)))
-    (let ((stream-object (make-instance 'file-simple-stream
-                                      :filename file
-                                      :direction :input)))
-      (with-open-stream (s stream-object)
-         (setf result (and result (string= (read-line s) *dumb-string*)))))
+  ;; Via file-simple-stream objects, write and then re-read data.
+  (let ((result t))
+    (with-test-file (s *test-file* :class 'file-simple-stream
+                       :direction :output :if-exists :overwrite
+                       :if-does-not-exist :create :delete-afterwards nil)
+      (write-line *dumb-string* s)
+      (setf result (and result (string= (write-string *dumb-string* s)
+                                        *dumb-string*))))
+
+    (with-test-file (s *test-file* :class 'file-simple-stream
+                       :direction :input :if-does-not-exist :error)
+      ;; Check first line
+      (multiple-value-bind (string missing-newline-p)
+          (read-line s)
+        (setf result (and result (string= string *dumb-string*)
+                          (not missing-newline-p))))
+      ;; Check second line
+      (multiple-value-bind (string missing-newline-p)
+          (read-line s)
+        (setf result (and result (string= string *dumb-string*)
+                          missing-newline-p))))
     result)
   t)
 
 (deftest create-read-mapped-file-1
-  (let ((result t)
-        (file (merge-pathnames #p"test-data.txt" *test-path*)))
-    (with-open-file (s file
-                       :class 'file-simple-stream
-                       :direction :output :if-exists :overwrite)
-       (setf result (and result (string= (write-string *dumb-string* s)
-                                         *dumb-string*))))
-    (with-open-file (s file
-                       :class 'mapped-file-simple-stream
-                       :direction :input)
-       (setf result (and result (string= (read-line s) *dumb-string*))))
-    (delete-file file)
+  ;; Read data via a mapped-file-simple-stream object.
+  (let ((result t))
+    (with-test-file (s *test-file* :class 'mapped-file-simple-stream
+                       :direction :input :if-does-not-exist :error
+                       :initial-content *dumb-string*)
+      (setf result (and result (string= (read-line s) *dumb-string*))))
     result)
   t)
 
+(deftest write-read-inet
+  (handler-case
+      (with-open-stream (s (make-instance 'socket-simple-stream
+                                          :remote-host #(127 0 0 1)
+                                          :remote-port 7
+                                          :direction :io))
+        (string= (prog1 (write-line "Got it!" s) (finish-output s))
+                 (read-line s)))
+    ;; Fail gracefully if echo isn't activated on the system
+    (sb-bsd-sockets::connection-refused-error () t)
+    ;; Timeout may occur on the restricted systems (e.g. FreeBSD
+    ;; with jail(8) or blackhole(4) is used).
+    (sb-bsd-sockets::operation-timeout-error () t))
+  t)
+
+(deftest write-read-large-sc-1
+  ;; Do write and read with more data than the buffer will hold
+  ;; (single-channel simple-stream)
+  (let* ((stream (make-instance 'file-simple-stream
+                                :filename *test-file* :direction :output
+                                :if-exists :overwrite
+                                :if-does-not-exist :create))
+         (content (make-string (1+ (device-buffer-length stream))
+                               :initial-element #\x)))
+    (with-open-stream (s stream)
+      (write-string content s))
+    (with-test-file (s *test-file* :class 'file-simple-stream
+                       :direction :input :if-does-not-exist :error)
+      (string= content (read-line s))))
+  t)
+
+(deftest write-read-large-sc-2
+  (let* ((stream (make-instance 'file-simple-stream
+                                :filename *test-file* :direction :output
+                                :if-exists :overwrite
+                                :if-does-not-exist :create))
+         (length (1+ (* 3 (device-buffer-length stream))))
+         (content (make-string length)))
+    (dotimes (i (length content))
+      (setf (aref content i) (code-char (random 256))))
+    (with-open-stream (s stream)
+      (write-string content s))
+    (with-test-file (s *test-file* :class 'file-simple-stream
+                       :direction :input :if-does-not-exist :error)
+      (let ((seq (make-string length)))
+        #+nil (read-sequence seq s)
+        #-nil (dotimes (i length)
+                (setf (char seq i) (read-char s)))
+        (string= content seq))))
+  t)
+
+(deftest write-read-large-sc-3
+  (let* ((stream (make-instance 'file-simple-stream
+                                :filename *test-file* :direction :output
+                                :if-exists :overwrite
+                                :if-does-not-exist :create))
+         (length (1+ (* 3 (device-buffer-length stream))))
+         (content (make-array length :element-type '(unsigned-byte 8))))
+    (dotimes (i (length content))
+      (setf (aref content i) (random 256)))
+    (with-open-stream (s stream)
+      (write-sequence content s))
+    (with-test-file (s *test-file* :class 'file-simple-stream
+                       :direction :input :if-does-not-exist :error)
+      (let ((seq (make-array length :element-type '(unsigned-byte 8))))
+        #+nil (read-sequence seq s)
+        #-nil (dotimes (i length)
+                (setf (aref seq i) (read-byte s)))
+        (equalp content seq))))
+  t)
+
+(deftest write-read-large-dc-1
+  ;; Do write and read with more data than the buffer will hold
+  ;; (dual-channel simple-stream; we only have socket streams atm)
+  (handler-case
+   (let* ((stream (make-instance 'socket-simple-stream
+                                 :remote-host #(127 0 0 1)
+                                 :remote-port 7
+                                 :direction :io))
+          (content (make-string (1+ (device-buffer-length stream))
+                                :initial-element #\x)))
+     (with-open-stream (s stream)
+       (string= (prog1 (write-line content s) (finish-output s))
+                (read-line s))))
+    ;; Fail gracefully if echo isn't activated on the system
+   (sb-bsd-sockets::connection-refused-error () t)
+   ;; Timeout may occur on the restricted systems (e.g. FreeBSD
+   ;; with jail(8) or blackhole(4) is used).
+   (sb-bsd-sockets::operation-timeout-error () t))
+  t)
+
+
+(deftest file-position-1
+    ;; Test reading of file-position
+    (with-test-file (s *test-file* :class 'file-simple-stream :direction :input
+                       :initial-content *dumb-string*)
+      (file-position s))
+  0)
+
+(deftest file-position-2
+    ;; Test reading of file-position
+    (with-test-file (s *test-file* :class 'file-simple-stream :direction :input
+                       :initial-content *dumb-string*)
+      (read-byte s)
+      (file-position s))
+  1)
+
+(deftest file-position-3
+    ;; Test reading of file-position in the presence of unsaved data
+    (with-test-file (s *test-file* :class 'file-simple-stream
+                       :direction :output :if-exists :supersede
+                       :if-does-not-exist :create)
+      (write-byte 50 s)
+      (file-position s))
+  1)
+
+(deftest file-position-4
+    ;; Test reading of file-position in the presence of unsaved data and
+    ;; filled buffer
+    (with-test-file (s *test-file* :class 'file-simple-stream :direction :io
+                       :if-exists :overwrite :if-does-not-exist :create
+                       :initial-content *dumb-string*)
+      (read-byte s)                     ; fill buffer
+      (write-byte 50 s)                 ; advance file-position
+      (file-position s))
+  2)
+
+(deftest file-position-5
+    ;; Test file position when opening with :if-exists :append
+    (with-test-file (s *test-file* :class 'file-simple-stream :direction :io
+                       :if-exists :append :if-does-not-exist :create
+                       :initial-content *dumb-string*)
+      (= (file-length s) (file-position s)))
+  T)
+
+(deftest write-read-unflushed-sc-1
+    ;; Write something into a single-channel stream and read it back
+    ;; without explicitly flushing the buffer in-between
+    (with-test-file (s *test-file* :class 'file-simple-stream :direction :io
+                       :if-does-not-exist :create :if-exists :supersede)
+      (write-char #\x s)
+      (file-position s :start)
+      (read-char s))
+  #\x)
+
+(deftest write-read-unflushed-sc-2
+    ;; Write something into a single-channel stream, try to read back too much
+    (handler-case
+        (with-test-file (s *test-file* :class 'file-simple-stream
+                           :direction :io :if-does-not-exist :create
+                           :if-exists :supersede)
+            (write-char #\x s)
+            (file-position s :start)
+            (read-char s)
+            (read-char s)
+            nil)
+      (end-of-file () t))
+  t)
+
+(deftest write-read-unflushed-sc-3
+    ;; Test writing in a buffer filled with previous file contents
+    (let ((result t))
+      (with-test-file (s *test-file* :class 'file-simple-stream :direction :io
+                         :if-exists :overwrite :if-does-not-exist :create
+                         :initial-content *dumb-string*)
+        (setq result (and result (char= (read-char s) (schar *dumb-string* 0))))
+        (setq result (and result (= (file-position s) 1)))
+        (let ((pos (file-position s)))
+          (write-char #\x s)
+          (file-position s pos)
+          (setq result (and result (char= (read-char s) #\x)))))
+      result)
+  t)
+
+(deftest write-read-unflushed-sc-4
+    ;; Test flushing of buffers
+    (progn
+      (with-test-file (s *test-file* :class 'file-simple-stream :direction :io
+                         :if-exists :overwrite :if-does-not-exist :create
+                         :initial-content "Foo"
+                         :delete-afterwards nil)
+        (read-char s)                   ; Fill the buffer.
+        (file-position s :start)        ; Change existing data.
+        (write-char #\X s)
+        (file-position s :end)          ; Extend file.
+        (write-char #\X s))
+      (with-test-file (s *test-file* :class 'file-simple-stream
+                         :direction :input :if-does-not-exist :error)
+        (read-line s)))
+  "XooX"
+  T)
+
+(deftest write-read-append-sc-1
+    ;; Test writing in the middle of a stream opened in append mode
+    (progn
+      (with-test-file (s *test-file* :class 'file-simple-stream :direction :io
+                         :if-exists :append :if-does-not-exist :create
+                         :initial-content "Foo"
+                         :delete-afterwards nil)
+        (file-position s :start)        ; Jump to beginning.
+        (write-char #\X s)
+        (file-position s :end)          ; Extend file.
+        (write-char #\X s))
+      (with-test-file (s *test-file* :class 'file-simple-stream
+                         :direction :input :if-does-not-exist :error)
+        (read-line s)))
+  "XooX"
+  T)
+
+(deftest write-read-mixed-sc-1
+    ;; Test read/write-sequence of types string and (unsigned-byte 8)
+    (let ((uvector (make-array '(10) :element-type '(unsigned-byte 8)
+                               :initial-element 64))
+          (svector (make-array '(10) :element-type '(signed-byte 8)
+                               :initial-element -1))
+          (result-uvector (make-array '(10) :element-type '(unsigned-byte 8)
+                              :initial-element 0))
+          (result-svector (make-array '(10) :element-type '(signed-byte 8)
+                              :initial-element 0))
+          (result-string (make-string (length *dumb-string*)
+                                      :initial-element #\Space)))
+      (with-test-file (s *test-file* :class 'file-simple-stream :direction :io
+                         :if-exists :overwrite :if-does-not-exist :create
+                         :delete-afterwards nil)
+        (write-sequence svector s)
+        (write-sequence uvector s)
+        (write-sequence *dumb-string* s))
+      (with-test-file (s *test-file* :class 'file-simple-stream
+                         :direction :input :if-does-not-exist :error
+                         :delete-afterwards nil)
+        (read-sequence result-svector s)
+        (read-sequence result-uvector s)
+        (read-sequence result-string s))
+      (and (string= *dumb-string* result-string)
+           (equalp uvector result-uvector)
+           (equalp svector result-svector)))
+  T)
+
+(defparameter *multi-line-string*
+  "This file was created by simple-stream-tests.lisp.
+Nothing to see here, move along.")
+
+(defmacro with-dc-test-stream ((s &key initial-content) &body body)
+  `(with-test-file
+       (.ansi-stream.
+        *test-file*
+        :direction :io
+        :if-exists :overwrite
+        :initial-content ,(or initial-content '*multi-line-string*))
+     (let ((,s (make-instance 'terminal-simple-stream
+                 :input-handle (sb-kernel::fd-stream-fd .ansi-stream.)
+                 :output-handle (sb-kernel::fd-stream-fd .ansi-stream.))))
+       ,@body)))
+
+(defmacro with-sc-test-stream ((s &key initial-content) &body body)
+  `(with-test-file
+       (,s
+        *test-file*
+        :class 'file-simple-stream
+        :direction :io
+        :if-exists :overwrite
+        :initial-content ,(or initial-content '*multi-line-string*))
+     ,@body))
+
+(deftest listen-dc-1
+    ;; LISTEN with filled buffer
+    (with-dc-test-stream (s) (read-char s) (listen s))
+  T)
+
+(deftest listen-dc-2
+    ;; LISTEN with empty buffer
+    (with-dc-test-stream (s) (listen s))
+  T)
+
+(deftest listen-dc-3
+    ;; LISTEN at EOF
+    (with-dc-test-stream (s)
+      (read-line s)
+      (read-line s)
+      (listen s))
+  NIL)
+
+;;; the following tests are for problems fixed in SBCL 0.8.6.2:
+
+(deftest charpos-1
+    ;; check for bug involving the -1 vs. 0 oddity in std-dc-newline-in-handler
+    ;;
+    ;; Note: It not not clear to me that input should affect the CHARPOS at
+    ;; all.  (Except for a terminal stream perhaps, which our test stream
+    ;; happens to be.  Hmm.)
+    ;;
+    ;; But CHARPOS must not be -1, so much is sure, hence this test is right
+    ;; in any case.
+    (with-dc-test-stream (s)
+      (read-line s)
+      (sb-simple-streams:charpos s))
+  0)
+
+(deftest charpos-2
+    ;; FIXME: It not not clear to me that input should affect the CHARPOS at
+    ;; all, and indeed it does not.  That is, except for newlines?! (see above)
+    ;;
+    ;; What this test does is (a) check that the CHARPOS works at all without
+    ;; erroring and (b) force anyone changing the CHARPOS behaviour to read
+    ;; this comment and start thinking things through better than I can.
+    (with-dc-test-stream (s)
+      (read-char s)
+      (and (eql (sb-kernel:charpos s) 0)
+           (eql (sb-simple-streams:charpos s) 0)))
+  T)
+
+(deftest reader-1
+    ;; does the reader support simple streams?  Note that, say, "123" instead
+    ;; of "(1 2)" does not trigger the bugs present in SBCL 0.8.6.
+    (with-dc-test-stream (s :initial-content "(1 2)")
+      (equal (read s) '(1 2)))
+  T)
+
+(deftest line-length-dc-1
+    ;; does LINE-LENGTH support simple streams?
+    (with-dc-test-stream (s)
+      (eql (sb-simple-streams:line-length s)
+           (sb-kernel:line-length s)))
+  T)
+
+(defvar *synonym*)
+
+;; the biggest change in 0.8.6.2:
+;; support composite streams writing to simple streams
+
+;; first, SYNONYM-STREAM:
+
+(deftest synonym-stream-1
+    ;; READ-CHAR
+    (with-dc-test-stream (*synonym*)
+      (read-char (make-synonym-stream '*synonym*)))
+  #\T)
+
+(deftest synonym-stream-2
+    ;; UNREAD-CHAR (via STREAM-MISC-DISPATCH)
+    (with-dc-test-stream (*synonym*)
+      (let ((s (make-synonym-stream '*synonym*)))
+        (unread-char (read-char s) s)
+        (read-char s)))
+  #\T)
+
+(deftest synonym-stream-3
+    ;; READ-BYTE
+    (with-dc-test-stream (*synonym*)
+      (read-byte (make-synonym-stream '*synonym*)))
+  #.(char-code #\T))
+
+(deftest synonym-stream-4
+    ;; WRITE-CHAR
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-synonym-stream '*synonym*)))
+        (write-char #\A s)
+        (file-position s 0)
+        (read-char s)))
+  #\A)
+
+(deftest synonym-stream-5
+    ;; WRITE-BYTE
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-synonym-stream '*synonym*)))
+        (write-byte 65 s)
+        (file-position s 0)
+        (read-char s)))
+  #\A)
+
+(deftest synonym-stream-6
+    ;; WRITE-STRING
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-synonym-stream '*synonym*)))
+        (write-string "ab" s)
+        (file-position s 0)
+        (and (char= (read-char s) #\a)
+             (char= (read-char s) #\b))))
+  T)
+
+(deftest synonym-stream-7
+    ;; LISTEN (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-synonym-stream '*synonym*)))
+        (and (listen s) t)))
+  T)
+
+(deftest synonym-stream-8
+    ;; CLEAR-INPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-synonym-stream '*synonym*)))
+        (clear-input s)))
+  NIL)
+
+(deftest synonym-stream-9
+    ;; FORCE-OUTPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      ;; could test more here
+      (force-output (make-synonym-stream '*synonym*)))
+  NIL)
+
+(deftest synonym-stream-10
+    ;; FINISH-OUTPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      ;; could test more here
+      (finish-output (make-synonym-stream '*synonym*)))
+  NIL)
+
+(deftest synonym-stream-11
+    ;; STREAM-ELEMENT-TYPE (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (stream-element-type (make-synonym-stream '*synonym*))
+           (stream-element-type *synonym*)))
+  T)
+
+(deftest synonym-stream-12
+    ;; INTERACTIVE-STREAM-P (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (interactive-stream-p (make-synonym-stream '*synonym*))
+           (interactive-stream-p *synonym*)))
+  T)
+
+(deftest synonym-stream-13
+    ;; LINE-LENGTH (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (sb-kernel:line-length (make-synonym-stream '*synonym*))
+           (sb-kernel:line-length *synonym*)))
+  T)
+
+(deftest synonym-stream-14
+    ;; CHARPOS (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (sb-kernel:charpos (make-synonym-stream '*synonym*))
+           (sb-kernel:charpos *synonym*)))
+  T)
+
+(deftest synonym-stream-15
+    ;; FILE-LENGTH (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (file-length (make-synonym-stream '*synonym*))
+           (file-length *synonym*)))
+  T)
+
+(deftest synonym-stream-16
+    ;; FILE-POSITION (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (file-position (make-synonym-stream '*synonym*))
+           (file-position *synonym*)))
+  T)
+
+;; SYNONYM-STREAM tests repeated for BROADCAST-STREAM, where applicable
+
+(deftest broadcast-stream-4
+    ;; WRITE-CHAR
+    (with-sc-test-stream (synonym)
+      (let ((s (make-broadcast-stream synonym)))
+        (write-char #\A s)
+        (force-output s))
+      (file-position synonym 0)
+      (read-char synonym))
+  #\A)
+
+(deftest broadcast-stream-5
+    ;; WRITE-BYTE
+    (with-sc-test-stream (synonym)
+      (let ((s (make-broadcast-stream synonym)))
+        (write-byte 65 s)
+        (force-output s))
+      (file-position synonym 0)
+      (read-char synonym))
+  #\A)
+
+(deftest broadcast-stream-6
+    ;; WRITE-STRING
+    (with-sc-test-stream (synonym)
+      (let ((s (make-broadcast-stream synonym)))
+        (write-string "ab" s)
+        (force-output s))
+      (file-position synonym 0)
+      (and (char= (read-char synonym) #\a)
+           (char= (read-char synonym) #\b)))
+  T)
+
+(deftest broadcast-stream-9
+    ;; FORCE-OUTPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      ;; could test more here
+      (force-output (make-broadcast-stream synonym)))
+  NIL)
+
+(deftest broadcast-stream-10
+    ;; FINISH-OUTPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      ;; could test more here
+      (finish-output (make-broadcast-stream synonym)))
+  NIL)
+
+(deftest broadcast-stream-11
+    ;; STREAM-ELEMENT-TYPE (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (stream-element-type (make-broadcast-stream synonym))
+           (stream-element-type synonym)))
+  T)
+
+(deftest broadcast-stream-12
+    ;; INTERACTIVE-STREAM-P (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (interactive-stream-p (make-broadcast-stream synonym))
+           (interactive-stream-p synonym)))
+  T)
+
+(deftest broadcast-stream-13
+    ;; LINE-LENGTH (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (sb-kernel:line-length (make-broadcast-stream synonym))
+           (sb-kernel:line-length synonym)))
+  T)
+
+(deftest broadcast-stream-14
+    ;; CHARPOS (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (sb-kernel:charpos (make-broadcast-stream synonym))
+           (sb-kernel:charpos synonym)))
+  T)
+
+(deftest broadcast-stream-16
+    ;; FILE-POSITION (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (file-position (make-broadcast-stream synonym))
+           (file-position synonym)))
+  T)
+
+;; SYNONYM-STREAM tests repeated for TWO-WAY-STREAM, where applicable
+
+(deftest two-way-stream-1
+    ;; READ-CHAR
+    (with-dc-test-stream (synonym)
+      (read-char (make-two-way-stream synonym synonym)))
+  #\T)
+
+(deftest two-way-stream-2
+    ;; UNREAD-CHAR (via STREAM-MISC-DISPATCH)
+    (with-dc-test-stream (synonym)
+      (let ((s (make-two-way-stream synonym synonym)))
+        (unread-char (read-char s) s)
+        (read-char s)))
+  #\T)
+
+(deftest two-way-stream-3
+    ;; READ-BYTE
+    (with-dc-test-stream (synonym)
+      (read-byte (make-two-way-stream synonym synonym)))
+  #.(char-code #\T))
+
+(deftest two-way-stream-4
+    ;; WRITE-CHAR
+    (with-sc-test-stream (synonym)
+      (let ((s (make-two-way-stream synonym synonym)))
+        (write-char #\A s)
+        (force-output s))
+      (file-position synonym 0)
+      (read-char synonym))
+  #\A)
+
+(deftest two-way-stream-5
+    ;; WRITE-BYTE
+    (with-sc-test-stream (synonym)
+      (let ((s (make-two-way-stream synonym synonym)))
+        (write-byte 65 s)
+        (force-output s))
+      (file-position synonym 0)
+      (read-char synonym))
+  #\A)
+
+(deftest two-way-stream-6
+    ;; WRITE-STRING
+    (with-sc-test-stream (synonym)
+      (let ((s (make-two-way-stream synonym synonym)))
+        (write-string "ab" s)
+        (force-output s))
+      (file-position synonym 0)
+      (and (char= (read-char synonym) #\a)
+           (char= (read-char synonym) #\b)))
+  T)
+
+(deftest two-way-stream-7
+    ;; LISTEN (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (let ((s (make-two-way-stream synonym synonym)))
+        (and (listen s) t)))
+  T)
+
+(deftest two-way-stream-8
+    ;; CLEAR-INPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (let ((s (make-two-way-stream synonym synonym)))
+        (clear-input s)))
+  NIL)
+
+(deftest two-way-stream-9
+    ;; FORCE-OUTPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      ;; could test more here
+      (force-output (make-two-way-stream synonym synonym)))
+  NIL)
+
+(deftest two-way-stream-10
+    ;; FINISH-OUTPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      ;; could test more here
+      (finish-output (make-two-way-stream synonym synonym)))
+  NIL)
+
+(deftest two-way-stream-11
+    ;; STREAM-ELEMENT-TYPE (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (stream-element-type (make-two-way-stream synonym synonym))
+           (stream-element-type synonym)))
+  T)
+
+(deftest two-way-stream-12
+    ;; INTERACTIVE-STREAM-P (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (interactive-stream-p (make-two-way-stream synonym synonym))
+           (interactive-stream-p synonym)))
+  T)
+
+(deftest two-way-stream-13
+    ;; LINE-LENGTH (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (sb-kernel:line-length (make-two-way-stream synonym synonym))
+           (sb-kernel:line-length synonym)))
+  T)
+
+(deftest two-way-stream-14
+    ;; CHARPOS (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (sb-kernel:charpos (make-two-way-stream synonym synonym))
+           (sb-kernel:charpos synonym)))
+  T)
+
+(deftest two-way-stream-16
+    ;; FILE-POSITION (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (synonym)
+      (eql (file-position (make-two-way-stream synonym synonym))
+           (file-position synonym)))
+  T)
+
+;; SYNONYM-STREAM tests repeated for ECHO-STREAM, where applicable
+
+(deftest echo-stream-1
+    ;; READ-CHAR
+    (with-dc-test-stream (*synonym*)
+      (read-char (make-echo-stream *synonym* *synonym*)))
+  #\T)
+
+(deftest echo-stream-2
+    ;; UNREAD-CHAR (via STREAM-MISC-DISPATCH)
+    (with-dc-test-stream (*synonym*)
+      (let ((s (make-echo-stream *synonym* *synonym*)))
+        (unread-char (read-char s) s)
+        (read-char s)))
+  #\T)
+
+(deftest echo-stream-3
+    ;; READ-BYTE
+    (with-dc-test-stream (*synonym*)
+      (read-byte (make-echo-stream *synonym* *synonym*)))
+  #.(char-code #\T))
+
+(deftest echo-stream-7
+    ;; LISTEN (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-echo-stream *synonym* *synonym*)))
+        (and (listen s) t)))
+  T)
+
+(deftest echo-stream-8
+    ;; CLEAR-INPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-echo-stream *synonym* *synonym*)))
+        (clear-input s)))
+  NIL)
+
+(deftest echo-stream-11
+    ;; STREAM-ELEMENT-TYPE (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (stream-element-type (make-echo-stream *synonym* *synonym*))
+           (stream-element-type *synonym*)))
+  T)
+
+(deftest echo-stream-12
+    ;; INTERACTIVE-STREAM-P (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (interactive-stream-p (make-echo-stream *synonym* *synonym*))
+           (interactive-stream-p *synonym*)))
+  T)
+
+(deftest echo-stream-13
+    ;; LINE-LENGTH (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (sb-kernel:line-length (make-echo-stream *synonym* *synonym*))
+           (sb-kernel:line-length *synonym*)))
+  T)
+
+(deftest echo-stream-14
+    ;; CHARPOS (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (sb-kernel:charpos (make-echo-stream *synonym* *synonym*))
+           (sb-kernel:charpos *synonym*)))
+  T)
+
+(deftest echo-stream-16
+    ;; FILE-POSITION (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (file-position (make-echo-stream *synonym* *synonym*))
+           (file-position *synonym*)))
+  T)
+
+;; SYNONYM-STREAM tests repeated for CONCATENATED-STREAM, where applicable
+
+(deftest concatenated-stream-1
+    ;; READ-CHAR
+    (with-dc-test-stream (*synonym*)
+      (read-char (make-concatenated-stream *synonym*)))
+  #\T)
+
+(deftest concatenated-stream-2
+    ;; UNREAD-CHAR (via STREAM-MISC-DISPATCH)
+    (with-dc-test-stream (*synonym*)
+      (let ((s (make-concatenated-stream *synonym*)))
+        (unread-char (read-char s) s)
+        (read-char s)))
+  #\T)
+
+(deftest concatenated-stream-3
+    ;; READ-BYTE
+    (with-dc-test-stream (*synonym*)
+      (read-byte (make-concatenated-stream *synonym*)))
+  #.(char-code #\T))
+
+(deftest concatenated-stream-7
+    ;; LISTEN (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-concatenated-stream *synonym*)))
+        (and (listen s) t)))
+  T)
+
+(deftest concatenated-stream-8
+    ;; CLEAR-INPUT (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (let ((s (make-concatenated-stream *synonym*)))
+        (clear-input s)))
+  NIL)
+
+(deftest concatenated-stream-11
+    ;; STREAM-ELEMENT-TYPE (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (stream-element-type (make-concatenated-stream *synonym*))
+           (stream-element-type *synonym*)))
+  T)
+
+(deftest concatenated-stream-12
+    ;; INTERACTIVE-STREAM-P (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (interactive-stream-p (make-concatenated-stream *synonym*))
+           (interactive-stream-p *synonym*)))
+  T)
+
+(deftest concatenated-stream-13
+    ;; LINE-LENGTH (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (sb-kernel:line-length (make-concatenated-stream *synonym*))
+           (sb-kernel:line-length *synonym*)))
+  T)
+
+(deftest concatenated-stream-14
+    ;; CHARPOS (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (sb-kernel:charpos (make-concatenated-stream *synonym*))
+           (sb-kernel:charpos *synonym*)))
+  T)
+
+(deftest concatenated-stream-16
+    ;; FILE-POSITION (via STREAM-MISC-DISPATCH)
+    (with-sc-test-stream (*synonym*)
+      (eql (file-position (make-concatenated-stream *synonym*))
+           (file-position *synonym*)))
+  T)
+
+;; uncovered by synonym-stream-15
+
+(deftest file-simple-stream-1
+    (values (subtypep 'file-simple-stream 'file-stream))
+  T)
+
+(deftest string-simple-stream-1
+    (values (subtypep 'string-simple-stream 'string-stream))
+  T)
+
+;; don't break fd-stream external-format support:
+
+(deftest external-format-1
+    (progn
+      (with-open-file (s *test-file*
+                       :direction :output
+                       :if-exists :supersede
+                       :element-type '(unsigned-byte 8))
+        (write-byte 195 s)
+        (write-byte 132 s))
+      (with-open-file (s *test-file*
+                       :direction :input
+                       :external-format :utf-8)
+        (char-code (read-char s))))
+  196)
 
+;; launchpad bug #491087
 
+(deftest lp491087
+    (labels ((read-big-int (stream)
+               (let ((b (make-array 1 :element-type '(signed-byte 32)
+                                    :initial-element 0)))
+                 (declare (dynamic-extent b))
+                 (sb-simple-streams::read-vector b stream
+                                                 :endian-swap :network-order)
+                 (aref b 0))))
+      (with-open-file (stream
+                       (merge-pathnames #P"lp491087.txt" *test-path*)
+                       :class 'file-simple-stream)
+        (let* ((start (file-position stream))
+               (integer (read-big-int stream))
+               (end (file-position stream)))
+          (and (= start 0)
+               (= integer #x30313233)
+               (= end 4)))))
+  T)