From 92612e6d76d1f467e6961efeeb194fef2b32522c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Hugo=20H=C3=B6rnquist?= <hugo@lysator.liu.se>
Date: Sun, 12 Jun 2022 22:45:30 +0200
Subject: Add timespec tests.

---
 tests/test/timespec.scm | 88 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 88 insertions(+)
 create mode 100644 tests/test/timespec.scm

diff --git a/tests/test/timespec.scm b/tests/test/timespec.scm
new file mode 100644
index 00000000..256c01bf
--- /dev/null
+++ b/tests/test/timespec.scm
@@ -0,0 +1,88 @@
+(define-module (test timespec)
+  :use-module (srfi srfi-64)
+  :use-module (srfi srfi-88)
+  :use-module (datetime)
+  :use-module (datetime timespec))
+
+(test-equal "The empty string parses to the empty timespec"
+  (timespec-zero) (parse-time-spec ""))
+
+(test-group "timespec-add"
+
+            (test-equal "Zero operands gives 0"
+              (timespec-zero) (timespec-add))
+
+            (let ((ts (make-timespec #10:20:30 '- #\z)))
+              (test-equal "Single operand gives that operand"
+                ts (timespec-add ts)))
+
+            (test-equal "0 + 0 = 0"
+              (timespec-zero) (timespec-add (timespec-zero) (timespec-zero)))
+
+            (test-group
+             "+ -"
+             (test-equal "Remove a number less than the base"
+               (make-timespec #10:00:00 '+ #\w)
+               (timespec-add (make-timespec #10:20:30 '+ #\w)
+                             (make-timespec #00:20:30 '- #\w)))
+
+             (test-equal "Remove a number greater than the base"
+               (make-timespec #01:00:00 '- #\w)
+               (timespec-add (make-timespec #10:00:00 '+ #\w)
+                             (make-timespec #11:00:00 '- #\w)))
+
+             (test-equal "x + -x = 0"
+               (timespec-zero) (timespec-add (make-timespec #10:20:30 '+ #\w)
+                                             (make-timespec #10:20:30 '- #\w))))
+
+            (test-group "- +"
+             (test-equal "Add a number less than the (negative) base"
+               (make-timespec #10:00:00 '+ #\w)
+               (timespec-add (make-timespec #10:20:30 '- #\w)
+                             (make-timespec #00:20:30 '+ #\w)))
+
+             (test-equal "Add a number greater than the (negative) base"
+               (make-timespec #01:00:00 '- #\w)
+               (timespec-add (make-timespec #10:00:00 '- #\w)
+                             (make-timespec #11:00:00 '+ #\w)))
+
+             (test-equal "-x + x = 0"
+               (timespec-zero) (timespec-add (make-timespec #10:20:30 '- #\w)
+                                             (make-timespec #10:20:30 '+ #\w))))
+
+            (test-group "+ +"
+             (test-equal "x + x = 2x"
+               (make-timespec #20:41:00 '+ #\w)
+               (timespec-add (make-timespec #10:20:30 '+ #\w)
+                             (make-timespec #10:20:30 '+ #\w))))
+
+            (test-group "- -"
+             (test-equal "-x + -x = -2x"
+               (make-timespec #20:41:00 '- #\w)
+               (timespec-add (make-timespec #10:20:30 '- #\w)
+                             (make-timespec #10:20:30 '- #\w))))
+
+            ;; add more than two timespecs
+
+            ;; add timespecs of differing types
+            )
+
+(test-group "parse-time-spec"
+            ;; TODO what even is this case?
+            (test-equal (make-timespec (time) '+ #\g) (parse-time-spec "-g"))
+
+            (test-equal "Parse direct date, with hour minute and second"
+              (make-timespec #20:00:00 '+ #\w) (parse-time-spec "20:00:00"))
+            (test-equal "Parse direct date, with hour and minute"
+              (make-timespec #20:00:00 '+ #\w) (parse-time-spec "20:00"))
+            (test-equal "Parse direct date, with just hour"
+              (make-timespec #20:00:00 '+ #\w) (parse-time-spec "20"))
+
+            (test-equal "Parse timespec with letter at end"
+              (make-timespec #20:00:00 '+ #\g) (parse-time-spec "20:00g"))
+
+            (test-equal "Parse negative timespec"
+              (make-timespec #20:00:00 '- #\w) (parse-time-spec "-20"))
+
+            (test-equal "Parse negative timespec with letter at end"
+              (make-timespec #20:00:00 '- #\z) (parse-time-spec "-20z")))
-- 
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