cond-thunk

1 files changed, 74 insertions, 0 deletions

diff --git a/mcgoron.cond-thunk.test.scm b/mcgoron.cond-thunk.test.scm
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+#| Copyright 2024 Peter McGoron
+ |
+ | Licensed under the Apache License, Version 2.0 (the "License");
+ |
+ | you may not use this file except in compliance with the License.
+ | You may obtain a copy of the License at
+ |
+ |     http://www.apache.org/licenses/LICENSE-2.0
+ |
+ | Unless required by applicable law or agreed to in writing, software
+ | distributed under the License is distributed on an "AS IS" BASIS,
+ | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ | See the License for the specific language governing permissions and
+ | limitations under the License.
+ |#
+
+(cond-expand
+ (chicken (import test r7rs))
+ (else (import (srfi 64))))
+
+(load "mcgoron.cond-thunk.sld")
+(import (mcgoron cond-thunk))
+
+(test-assert
+ "cond-thunk basic"
+ (cond-thunk
+   (if #t
+       (lambda ()
+         #t)
+       #f)
+   (else #f)))
+
+(test-assert
+ "when-ct true"
+ (cond-thunk
+   (when-ct #t #t)
+   (else #f)))
+
+(test
+ "cond-thunk multiple branches"
+ 'two
+ (cond-thunk
+   (when-ct (pair? #f) 'one)
+   (when-ct (boolean? #f) 'two)
+   (when-ct (boolean? #f) 'three)
+   (else #f)))
+
+(let ((on-pair
+       (lambda-ct (x) (pair? x)
+         'pair))
+      (on-boolean
+       (lambda-ct (x) (boolean? x)
+         'boolean)))
+  (test
+   "lambda-ct basic"
+   'boolean
+   (cond-thunk
+     (on-pair #f)
+     (on-boolean #f)
+     (else #f))))
+
+(let ()
+  (define-ct (on-pair x) (pair? x)
+    'pair)
+  (define-ct (on-boolean x) (boolean? x)
+    'boolean)
+  (test
+   "define-ct basic"
+   'boolean
+   (cond-thunk
+     (on-pair #f)
+     (on-boolean #f)
+     (else #f))))
+