From 712654d4c023a2ab13190c6905d313e0ba897965 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@lysator.liu.se>
Date: Mon, 2 Oct 2023 19:26:40 +0200
Subject: Rewrite test running system.

---
 tests/unit/util/srfi-41-util.scm | 110 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 110 insertions(+)
 create mode 100644 tests/unit/util/srfi-41-util.scm

(limited to 'tests/unit/util/srfi-41-util.scm')

diff --git a/tests/unit/util/srfi-41-util.scm b/tests/unit/util/srfi-41-util.scm
new file mode 100644
index 00000000..79c607c5
--- /dev/null
+++ b/tests/unit/util/srfi-41-util.scm
@@ -0,0 +1,110 @@
+;;; Commentary:
+;; Tests (srfi srfi-41 util).
+;; Currently only tests stream-paginate.
+;;; Code:
+
+(define-module (test srfi-41-util)
+  :use-module (srfi srfi-64)
+  :use-module (srfi srfi-88)
+  :use-module (srfi srfi-41 util)
+  :use-module (srfi srfi-41)
+  :use-module ((srfi srfi-1) :select (circular-list))
+  :use-module ((ice-9 sandbox) :select (call-with-time-limit)))
+
+(test-equal "Finite stream"
+  '((0 1 2) (3 4 5) (6 7 8) (9))
+  (let ((strm (stream-paginate (stream 0 1 2 3 4 5 6 7 8 9) 3)))
+    (map stream->list (stream->list strm))))
+
+(test-equal "slice of infinite"
+  '(1000 1001 1002 1003 1004 1005 1006 1007 1008 1009)
+  (let ((strm (stream-paginate (stream-from 0))))
+    (stream->list (stream-ref strm 100))))
+
+(define unique-symbol (gensym))
+
+(test-equal "time out on infinite 'empty' stream"
+  unique-symbol
+  ;; defined outside time limit since creation should always
+  ;; succeed. Only reference is expected to fail.
+  (let ((strm (stream-paginate
+               ;; easy way to get stream which never finds
+               ;; any elements.
+               (stream-filter negative? (stream-from 0)))))
+    (call-with-time-limit
+     0.1
+     (lambda () (stream-car strm))
+     (lambda _ unique-symbol))))
+
+
+
+
+(test-equal "stream insert"
+  '(1 4 5 7 8)
+  (stream->list (stream-insert < 5 (stream 1 4 7 8))))
+
+
+(test-equal "Filter sorted stream"
+  '(4 6 8)
+  (stream->list (filter-sorted-stream even? (stream 1 3 4 6 8 9 11))))
+
+(test-equal "Filter sorted stream (which actually is unsorted)"
+  '(4 6 8)
+  (stream->list (filter-sorted-stream even? (stream 1 3 4 6 8 9 11 12))))
+
+;; TODO filter-sorted-stream*
+
+(test-equal
+    "Get stream interval"
+    '(5 6 7 8 9)
+    (stream->list (get-stream-interval (lambda (x) (< 4 x))
+                                       (lambda (x) (< x 10))
+                                       (stream 1 2 3 4 5 6 7 8 9 10 11 12))))
+
+
+
+(test-equal "stream find" 2 (stream-find even? (stream-from 1)))
+
+
+(test-equal
+    "repeating naturals"
+    '(1 1 1 2 2 2 3 3 3 4)
+    (stream->list 10 (repeating-naturals 1 3)))
+
+
+;; sleep will return early if a singal arrives, this just resumes sleeping until
+;; the wanted time is hit.
+;; Might sleep longer since sleep always returns a whole number of seconds remaining
+(define (true-sleep n)
+  (let loop ((remaining n))
+    (unless (zero? remaining)
+      (loop (sleep remaining)))))
+
+(test-skip "time limited stream")
+
+(let ((strm (stream-map (lambda (x) (when (zero? (modulo x 4)) (true-sleep 1)) x) (stream-from 1))))
+  (let ((strm (stream-timeslice-limit strm 0.1)))
+    (test-equal "time limited stream"
+      '(1 2 3)
+      (stream->list strm))))
+
+
+(test-group "stream-split-by"
+  (let ((hello-chars-stream (stream-unfold
+                             car
+                             (const #t)
+                             cdr
+                             (apply circular-list
+                                    (string->list "Hello ")))))
+    (test-equal "Check that test list looks as expected"
+      (string->list "Hello Hell")
+      (stream->list 10 hello-chars-stream))
+    (test-equal "Check that it splits correctly"
+      '("Hello " "Hello " "Hello ")
+      (stream->list
+       3
+       (stream-map list->string
+                   (stream-split-by (lambda (c) (char=? c #\space))
+                                    hello-chars-stream))))))
+
+'((srfi srfi-41 util))
-- 
cgit v1.2.3