--- /dev/null
+;;; Dungeon Master --- Adventure generator for GNU Guile
+;;; Copyright © 2019 Javier Sancho <jsf@jsancho.org>
+;;;
+;;; Dungeon Master is free software; you can redistribute it and/or modify it
+;;; under the terms of the GNU General Public License as published by
+;;; the Free Software Foundation; either version 3 of the License, or
+;;; (at your option) any later version.
+;;;
+;;; Dungeon Master is distributed in the hope that it will be useful, but
+;;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;;; General Public License for more details.
+;;;
+;;; You should have received a copy of the GNU General Public License
+;;; along with Haunt. If not, see <http://www.gnu.org/licenses/>.
+
+
+(define-module (test-bowyer-watson)
+ #:use-module (ice-9 receive)
+ #:use-module (srfi srfi-64)
+ #:use-module (dungeon-master geom bowyer-watson)
+ #:use-module (dungeon-master geom point))
+
+(test-begin "bowyer-watson")
+
+(receive (triangles points frame)
+ (bowyer-watson '())
+ (test-equal
+ "null triangles"
+ (length triangles)
+ 2)
+ (test-equal
+ "null points"
+ (length points)
+ 4)
+ (test-equal
+ "null frame"
+ (length frame)
+ 4))
+
+(define p1 (make-point 0 0))
+(define p2 (make-point 0 10))
+(define p3 (make-point 10 0))
+(define p4 (make-point 10 10))
+(define vertices (list p1 p2 p3 p4))
+
+(receive (triangles points frame)
+ (bowyer-watson vertices)
+ (test-equal
+ "simple triangles"
+ (length triangles)
+ 10)
+ (test-equal
+ "simple points"
+ (length points)
+ 8)
+ (test-equal
+ "simple frame"
+ frame
+ (list (make-point -2.5 -2.5)
+ (make-point -2.5 12.5)
+ (make-point 12.5 -2.5)
+ (make-point 12.5 12.5))))
+
+(test-end)
+
+(exit (zero? (test-runner-fail-count (test-runner-current))))