From 2cf0efca6f8abb4938cec1cc4d00bb96dcc4de87 Mon Sep 17 00:00:00 2001
From: Christopher Allan Webber <cwebber@dustycloud.org>
Date: Sat, 28 Nov 2015 09:17:58 -0600
Subject: [PATCH] Add queue helpers, with tests

---
 eightsync/agenda.scm  | 15 +++++++++++++++
 tests/test-agenda.scm | 21 +++++++++++++++++++--
 2 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/eightsync/agenda.scm b/eightsync/agenda.scm
index a2463a2..ede753f 100644
--- a/eightsync/agenda.scm
+++ b/eightsync/agenda.scm
@@ -30,6 +30,8 @@
             
             make-async-prompt-tag
 
+            list->q make-q*
+
             <time-segment>
             make-time-segment time-segment?
             time-segment-time time-segment-queue
@@ -146,6 +148,19 @@ Generally done automatically for the user through (make-agenda)."
          "Can't get current agenda prompt if there's no current agenda!")
         (agenda-prompt-tag current-agenda))))
 
+;; helper for making queues for an agenda
+(define (list->q lst)
+  "Makes a queue composed of LST items"
+  (let ((q (make-q)))
+    (for-each
+     (lambda (x)
+       (enq! q x))
+     lst)
+    q))
+
+(define (make-q* . args)
+  "Makes a queue and populates it with this invocation's ARGS"
+  (list->q args))
 
 
 ;;; Schedule
diff --git a/tests/test-agenda.scm b/tests/test-agenda.scm
index 9ab65f1..ef2c74f 100644
--- a/tests/test-agenda.scm
+++ b/tests/test-agenda.scm
@@ -40,8 +40,25 @@
       messages)))
 
 
-;; Timer tests
-;; ===========
+;;; queue helpers
+;;; =============
+
+(define test-q (list->q '(1 2 3)))
+(test-equal (deq! test-q) 1)
+(test-equal (deq! test-q) 2)
+(test-equal (deq! test-q) 3)
+(test-assert (q-empty? test-q))
+
+(define test-q (make-q* 'apple 'banana 'carrot))
+(test-equal (deq! test-q) 'apple)
+(test-equal (deq! test-q) 'banana)
+(test-equal (deq! test-q) 'carrot)
+(test-assert (q-empty? test-q))
+
+
+
+;;; Timer tests
+;;; ===========
 
 (test-assert (time= '(1 . 1) '(1 . 1)))
 (test-assert (not (time= '(1 . 1) '(1 . 0))))
-- 
2.31.1