tests.Util source code

1 /**
2  * Copyright: Copyright (c) 2011 Jacob Carlborg. All rights reserved.
3  * Authors: Jacob Carlborg
4  * Version: Initial created: Aug 6, 2011
5  * License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0)
6  */
7 module tests.Util;
8 
9 import std.algorithm;
10 import std.array;
11 import std.xml;
12 
13 /**
14  * Returns $(D_KEYWORD true) if the array contains the given pattern.
15  *
16  * Params:
17  *     arr = the array to check if it contains the element
18  *     pattern = the pattern whose presence in the array is to be tested
19  *
20  * Returns: $(D_KEYWORD true) if the array contains the given pattern
21  */
22 bool contains (T) (T[] arr, T[] pattern)
23 {
24     return !arr.find(pattern).empty;
25 }
26 
27 bool equalToXml(string expected, string actual)
28 {
29     import std.string;
30 
31     return new Document(expected.strip).isEqual(new Document(actual.strip));
32 }
33 
34 private:
35 
36 T toType(T)(Object o)
37 {
38     auto t = cast(T)(o);
39 
40     if (t is null)
41         throw new Exception("Attempt to compare a " ~ T.stringof ~ " with an instance of another type");
42 
43     return t;
44 }
45 
46 bool isEqual(Document lhs, Object rhs)
47 {
48     auto doc = toType!(Document)(rhs);
49     return
50         (lhs.prolog != doc.prolog            ) ? false : (
51         (!isEqual(cast(Element) lhs, doc)    ) ? false : (
52         (lhs.epilog != doc.epilog            ) ? false : (
53     true )));
54 }
55 
56 bool isEqual(Element lhs, Object rhs)
57 {
58     import std.algorithm;
59     import std.range;
60 
61     auto element = toType!(Element)(rhs);
62 
63     if (lhs.tag != element.tag)
64         return false;
65 
66     return lhs.items.zip(element.items).all!(e => e[0].isEqual(e[1]));
67 }
68 
69 bool isEqual(Item lhs, Object rhs)
70 {
71     if (auto o = cast(Document) lhs) return o.isEqual(rhs);
72     if (auto o = cast(Element) lhs) return o.isEqual(rhs);
73     else return lhs == rhs;
74 }