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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
; Copyright (c) Rich Hickey. All rights reserved.
; The use and distribution terms for this software are covered by the
; Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
; which can be found in the file epl-v10.html at the root of this distribution.
; By using this software in any fashion, you are agreeing to be bound by
; the terms of this license.
; You must not remove this notice, or any other, from this software.
; Author: Frantisek Sodomka
;;
;; Created 1/28/2009
(ns clojure.test-clojure.predicates
(:use clojure.test))
;; *** Type predicates ***
(def myvar 42)
(def sample-data {
:nil nil
:bool-true true
:bool-false false
:byte (byte 7)
:short (short 7)
:int (int 7)
:long (long 7)
:bigint (bigint 7)
:float (float 7)
:double (double 7)
:bigdec (bigdec 7)
:ratio 2/3
:character \a
:symbol 'abc
:keyword :kw
:empty-string ""
:empty-regex #""
:empty-list ()
:empty-lazy-seq (lazy-seq nil)
:empty-vector []
:empty-map {}
:empty-set #{}
:empty-array (into-array [])
:string "abc"
:regex #"a*b"
:list '(1 2 3)
:lazy-seq (lazy-seq [1 2 3])
:vector [1 2 3]
:map {:a 1 :b 2 :c 3}
:set #{1 2 3}
:array (into-array [1 2 3])
:fn (fn [x] (* 2 x))
:class java.util.Date
:object (new java.util.Date)
:var (var myvar)
:delay (delay (+ 1 2))
})
(def type-preds {
nil? [:nil]
true? [:bool-true]
false? [:bool-false]
; boolean?
integer? [:byte :short :int :long :bigint]
float? [:float :double]
decimal? [:bigdec]
ratio? [:ratio]
rational? [:byte :short :int :long :bigint :ratio :bigdec]
number? [:byte :short :int :long :bigint :ratio :bigdec :float :double]
; character?
symbol? [:symbol]
keyword? [:keyword]
string? [:empty-string :string]
; regex?
list? [:empty-list :list]
vector? [:empty-vector :vector]
map? [:empty-map :map]
set? [:empty-set :set]
coll? [:empty-list :list
:empty-lazy-seq :lazy-seq
:empty-vector :vector
:empty-map :map
:empty-set :set]
seq? [:empty-list :list
:empty-lazy-seq :lazy-seq]
; array?
fn? [:fn]
ifn? [:fn
:empty-vector :vector :empty-map :map :empty-set :set
:keyword :symbol :var]
class? [:class]
var? [:var]
delay? [:delay]
})
;; Test all type predicates against all data types
;;
(defn- get-fn-name [f]
(str
(apply str (nthnext (first (.split (str f) "_"))
(count "clojure.core$")))
"?"))
(deftest test-type-preds
(doseq [tp type-preds]
(doseq [dt sample-data]
(if (some #(= % (first dt)) (second tp))
(is ((first tp) (second dt))
(pr-str (list (get-fn-name (first tp)) (second dt))))
(is (not ((first tp) (second dt)))
(pr-str (list 'not (list (get-fn-name (first tp)) (second dt)))))))))
;; Additional tests:
;; http://groups.google.com/group/clojure/browse_thread/thread/537761a06edb4b06/bfd4f0705b746a38
;;
(deftest test-string?-more
(are [x] (not (string? x))
(new java.lang.StringBuilder "abc")
(new java.lang.StringBuffer "xyz")))
|
