blob: a4a30c1f828c9bfbb0f9443176abc94c80b830ac (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
#| 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.
|#
(import (mcgoron iterator string)
(mcgoron iterator srfi 128))
(let* ((str "")
(itr (string-iterator-start str)))
(test-group "empty-string"
(test-assert "iterator-at-start?" (iterator-at-start? itr))
(test-assert "iterator-at-end?" (iterator-at-end? itr))
(test-assert "iterator-next" (not (iterator-next itr)))
(test-assert "iterator-prev" (not (iterator-next itr)))
(test-assert "iterator-advance 0" (iterator=? itr
(iterator-advance itr 0)))
(test "iterator->index" 0 (iterator->index itr))
(test-assert "iterator=?" (iterator=? itr (string-iterator-end str)))
(test-assert "iterator-ref" (with-exception-check ref-at-end
(iterator-ref itr)))))
(let* ((str "a")
(itr (string-iterator-start str))
(itr-from-itr (string-iterator-start itr)))
(test-group "non empty string"
(test-assert "iterator-at-start?" (iterator-at-start? itr))
(test-assert "iterator-at-end?" (not (iterator-at-end? itr)))
(test-assert (iterator=? itr itr-from-itr))
(test "iterator-ref 0" #\a (iterator-ref itr))
(test-assert "iterator-advance start -1" (not (iterator-advance itr -1)))
(let ((next-itr (iterator-advance itr 1)))
(test-assert "iterator? advanced" (iterator? next-itr))
(test-assert "iterator-at-end? advanced" (iterator-at-end? next-itr))
(test-assert "iterator=? end advanced"
(iterator=? next-itr (string-iterator-end str)))
(test-assert "iterator=? itr next-itr"
(not (iterator=? itr next-itr)))
(test-assert "iterator<? itr next-itr"
(iterator<? itr next-itr))
(test-assert "iterator=? itr previous"
(iterator=? itr (iterator-advance next-itr -1)))
(test "iterator->index next-itr" 1
(iterator->index next-itr))
(test-assert "iterator-ref next-itr"
(with-exception-check ref-at-end
(iterator-ref next-itr))))))
(let* ((str "abcd")
(itr1 (string-iterator-start str)))
(test-group "multiple advance")
(let ((itr2 (iterator-advance itr1 1))
(itr3 (iterator-advance itr1 2))
(itr4 (iterator-advance itr1 3)))
(test-assert "itr4 status" (not (iterator-at-end? itr4)))
(test "itr1 ref" #\a (iterator-ref itr1))
(test "itr2 ref" #\b (iterator-ref itr2))
(test "itr3 ref" #\c (iterator-ref itr3))
(test "itr4 ref" #\d (iterator-ref itr4))
(test-assert "itr2->itr3" (iterator=? itr3
(iterator-next itr2)))
(test-assert "itr2->itr4" (iterator=? itr4
(iterator-advance itr2 2)))
(test-assert "itr2 < itr4" (iterator<? itr2 itr4))
(test-assert "itr4->itr2" (iterator=? itr2
(iterator-advance itr4 -2)))))
|
