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
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
|
package sbinary;
import org.scalacheck._;
import org.scalacheck.Test._;
import Gen._;
import Arbitrary.arbitrary;
import Prop._;
import scala.collection._;
import DefaultProtocol._;
import Operations._;
object Equal{
abstract class Equal[T] extends Function2[T, T, Boolean];
def allAreEqual[T] : Equal[T] = new Equal[T]{
def apply(x : T, y : T) = x == y
}
implicit val eqString = allAreEqual[String];
implicit val eqInt = allAreEqual[Int];
implicit val eqLong = allAreEqual[Long];
implicit val eqBoolean = allAreEqual[Boolean];
implicit val eqUnit = allAreEqual[Unit];
implicit val eqByte = allAreEqual[Byte];
implicit val eqDouble = allAreEqual[Double];
implicit val eqChar = allAreEqual[Char];
implicit def eqSet[T] = allAreEqual[immutable.Set[T]];
implicit def eqSortedSet[T] = allAreEqual[immutable.SortedSet[T]];
implicit def eqMap[S,T] = allAreEqual[immutable.Map[S,T]];
implicit def eqSortedMap[S,T] = allAreEqual[immutable.SortedMap[S,T]];
implicit def eqList[T](implicit eqT : Equal[T]) : Equal[List[T]] = new Equal[List[T]]{
def apply(x : List[T], y : List[T]) = (x, y) match {
case (Nil, Nil) => true;
case (x :: xs, y :: ys) => eqT(x, y) && apply(xs, ys);
case _ => false;
}
}
implicit def eqOption[T](implicit eqT : Equal[T]) : Equal[Option[T]] = new Equal[Option[T]]{
def apply(x : Option[T], y : Option[T]) = (x, y) match {
case (None, None) => true;
case (Some(u), Some(v)) => eqT(u, v);
case _ => false;
}
}
implicit def eqTuple3[S, T, U](implicit eqS : Equal[S], eqT : Equal[T], eqU : Equal[U]) : Equal[(S, T, U)] = new Equal[(S, T, U)]{
def apply(x : (S, T, U), y : (S, T, U)) = eqS(x._1, y._1) && eqT(x._2, y._2) && eqU(x._3, y._3);
}
implicit def eqTuple2[S, T](implicit eqS : Equal[S], eqT : Equal[T]) : Equal[(S, T)] = new Equal[(S, T)]{
def apply(x : (S, T), y : (S, T)) = eqS(x._1, y._1) && eqT(x._2, y._2)
}
implicit def arraysAreEqual[T](implicit e : Equal[T]) : Equal[Array[T]] = new Equal[Array[T]]{
def apply(x : Array[T], y : Array[T]) = (x.length == y.length) && x.zip(y).forall({case (x, y) => e(x, y)})
}
implicit def streamsAreEqual[T](implicit e : Equal[T]) : Equal[Stream[T]] = new Equal[Stream[T]]{
def apply(x : Stream[T], y : Stream[T]) = (x.length == y.length) && x.zip(y).forall({case (x, y) => e(x, y)})
}
def equal[T](x : T, y : T)(implicit f : Equal[T]) = f(x, y);
}
import Equal._;
object CompatTests extends Properties("CompatTests"){
import java.io._;
def compatFor[T](name : String, readJ : DataInput => T, writeJ : (DataOutput, T) => Unit)(implicit fmt : Format[T], arb : Arbitrary[T]) = {
property(name + "AgreesWithDataInput") = forAll { (x : T) =>
val it = new ByteArrayOutputStream();
try { fmt.writes(it, x); readJ(new DataInputStream(new ByteArrayInputStream(it.toByteArray))) == x }
catch { case (e : Throwable) => e.printStackTrace; false }
};
property(name + "AgreesWithDataOutput") = forAll { (x : T) =>
val it = new ByteArrayOutputStream();
try {
writeJ(new DataOutputStream(it), x);
val ba = it.toByteArray;
fromByteArray[T](ba) == x
} catch { case (e : Throwable) => e.printStackTrace; false }
}
}
compatFor[String]("String", _.readUTF, _.writeUTF(_))
compatFor[Long]("Long", _.readLong, _.writeLong(_))
compatFor[Int]("Int", _.readInt, _.writeInt(_))
compatFor[Byte]("Byte", _.readByte, _.writeByte(_))
compatFor[Double]("Double", _.readDouble, _.writeDouble(_))
compatFor[Boolean]("Boolean", _.readBoolean, _.writeBoolean(_))
}
object LazyIOTests extends Properties("LazyIO"){
import java.io._;
property("NoMixingOfStreams") = forAll { (x : Stream[Int]) =>
val (u, v) = fromByteArray[(Stream[Int], Stream[Int])](toByteArray((x, x)))
equal(u, v) && equal(u, x);
};
property("NoMixingOfStreamsAndOthers") = forAll { (x : Stream[Int], y : String, z : Stream[Int]) =>
val (u, s, v) = fromByteArray[(Stream[Int], String, Stream[Int])](toByteArray((x, y, z)))
equal(u, x) && equal(s, y) && equal(z, v);
};
property("StreamsOfStreams") = forAll { (x : Stream[Stream[Int]]) => !x.isEmpty ==> {
val x2 = fromByteArray[Stream[Stream[Int]]](toByteArray(x));
equal(x(x.length - 1), x2(x.length - 1));
} };
}
object FormatTests extends Properties("Formats"){
def validFormat[T](implicit
bin : Format[T],
arb : Arbitrary[T],
equal : Equal[T]) = forAll((x : T) =>
try { equal(x, fromByteArray[T](toByteArray(x))) } catch {
case (e : Throwable) => e.printStackTrace; false
})
def formatSpec[T](name : String)(implicit
bin : Format[T],
arb : Arbitrary[T],
equal : Equal[T]) =
{ property(name) = validFormat[T] }
implicit val arbitraryUnit = Arbitrary[Unit](value(() => ()))
implicit def arbitrarySortedMap[K, V](implicit ord : Ordering[K], arbK : Arbitrary[K], arbV : Arbitrary[V]) : Arbitrary[immutable.SortedMap[K, V]] = {
Arbitrary(arbitrary[List[(K, V)]].map(x => immutable.TreeMap(x :_*)))
}
//implicit def arbitrarySet[T](implicit arb : Arbitrary[T]) : Arbitrary[immutable.Set[T]] = Arbitrary(arbitrary[List[T]].map((x : List[T]) => immutable.Set(x :_*)));
implicit def arbitraryArray[T](implicit arb : Arbitrary[T], mf: scala.reflect.Manifest[T]) : Arbitrary[Array[T]] =
Arbitrary(arbitrary[List[T]].map((x : List[T]) => x.toArray[T]));
implicit val arbitraryEnumeration : Arbitrary[Enumeration] = Arbitrary(arbitrary[List[String]].map(x => new Enumeration(x : _*){}));
implicit def orderedOption[T](opt : Option[T])(implicit ord : Ordering[T]) : Ordered[Option[T]] = new Ordered[Option[T]]{
def compare(that : Option[T]) = (opt, that) match {
case (None, None) => 0;
case (None, Some(_)) => -1;
case (Some(_), None) => 1;
case (Some(x), Some(y)) => ord.compare(x,y);
}
}
trait Foo;
case object Bar extends Foo;
case class Baz(override val toString : String) extends Foo;
case class Bif(i : Int, j : Long) extends Foo;
implicit val eqFoo = allAreEqual[Foo]
implicit val BazFormat : Format[Baz] = viaString(Baz)
implicit val BifFormat : Format[Bif] = asProduct2(Bif)(Bif.unapply(_).get)
implicit val FooFormat : Format[Foo] = asUnion[Foo](Bar, classOf[Baz], classOf[Bif])
implicit val arbitraryFoo : Arbitrary[Foo] = Arbitrary[Foo](
oneOf(value(Bar),
arbitrary[(Int, Long)].map{case (i, j) => Bif(i, j)},
arbitrary[String].map(Baz(_))))
sealed abstract class BinaryTree;
case class Split(left : BinaryTree, right : BinaryTree) extends BinaryTree;
case class Leaf extends BinaryTree;
implicit val eqBinaryTree = allAreEqual[BinaryTree]
implicit val BinaryTreeIsFormat : Format[BinaryTree] = lazyFormat({
implicit val formatLeaf = asSingleton(Leaf());
implicit val formatSplit : Format[Split] = asProduct2((x : BinaryTree, y : BinaryTree) => Split(x, y))((s : Split) => (s.left, s.right));
asUnion[BinaryTree](classOf[Leaf], classOf[Split]);
})
implicit val arbitraryTree : Arbitrary[BinaryTree] = {
def sizedArbitraryTree(n : Int) : Gen[BinaryTree] =
if (n <= 1) value(Leaf());
else for (i <- choose(1, n - 1);
left <- sizedArbitraryTree(i);
right <- sizedArbitraryTree(n - i)
) yield (Split(left, right));
Arbitrary[BinaryTree](sized(sizedArbitraryTree(_ : Int)))
}
object SomeEnum extends Enumeration{
val Foo, Bar, Baz = Value;
def items: List[Value] = Foo :: Bar :: Baz :: Nil
}
implicit val SomeEnumFormat = enumerationFormat[SomeEnum.Value](SomeEnum)
implicit val SomeEnumEq = allAreEqual[SomeEnum.Value]
implicit val SomeEnumArb = Arbitrary[SomeEnum.Value](oneOf(SomeEnum.items))
formatSpec[Boolean]("Boolean");
formatSpec[Byte]("Byte");
formatSpec[Char]("Char");
formatSpec[Int]("Int");
formatSpec[Double]("Double");
formatSpec[Long]("Long");
formatSpec[Unit]("Unit");
formatSpec[String]("String")
formatSpec[(Int, Int, Int)]("(Int, Int, Int)");
formatSpec[(String, Int, String)]("(String, Int, String)")
formatSpec[((Int, (String, Int), Int))]("((Int, (String, Int), Byte, Byte, Int))]");
formatSpec[(String, String)]("(String, String)")
formatSpec[Option[String]]("Option[String]");
formatSpec[(Option[String], String)]("(Option[String], String)");
formatSpec[Option[Option[Int]]]("Option[Option[Int]]");
formatSpec[List[String]]("List[String]");
formatSpec[List[(String, Int)]]("List[(String, Int)]");
formatSpec[List[Option[Int]]]("List[Option[Int]]");
formatSpec[List[Unit]]("List[Unit]");
formatSpec[immutable.Set[String]]("immutable.Set[String]");
formatSpec[immutable.Set[(String, Int)]]("immutable.Set[(String, Int)]");
formatSpec[immutable.Set[Option[Int]]]("immutable.Set[Option[Int]]");
formatSpec[immutable.Set[Unit]]("immutable.Set[Unit]");
formatSpec[String]("Array[String]");
formatSpec[Array[String]]("Array[String]]");
formatSpec[Array[List[Int]]]("Array[List[Int]]");
formatSpec[Array[Stream[Int]]]("Array[Stream[Int]]");
formatSpec[Array[Option[Byte]]]("Array[Option[Byte]]");
formatSpec[Array[Byte]]("Array[Byte]");
formatSpec[Array[(Int, Int)]]("Array[(Int, Int)]");
formatSpec[String]("Stream[String]");
formatSpec[Stream[String]]("Stream]Stream[String]]");
formatSpec[Stream[List[Int]]]("Stream[List[Int]]");
formatSpec[Stream[Option[Byte]]]("Stream[Option[Byte]]");
formatSpec[Stream[Byte]]("Stream[Byte]");
formatSpec[Stream[(Int, Int)]]("Stream[(Int, Int)]");
formatSpec[Stream[Stream[Int]]]("Stream[Stream[Int]]");
formatSpec[immutable.Map[Int, Int]]("immutable.Map[Int, Int]");
formatSpec[immutable.Map[Option[String], Int]]("immutable.Map[Option[String], Int]");
formatSpec[immutable.Map[List[Int], Int]]("immutable.Map[List[Int], String]");
formatSpec[immutable.SortedMap[Int, Int]]("immutable.SortedMap[Int, Int]");
formatSpec[immutable.SortedMap[String, Int]]("immutable.SortedMap[String, Int]");
formatSpec[immutable.SortedMap[Option[String], Int]]("immutable.SortedMap[Option[String], Int]");
formatSpec[Foo]("Foo")
formatSpec[(Foo, Foo)]("(Foo, Foo)")
formatSpec[Array[Foo]]("Array[Foo]")
formatSpec[BinaryTree]("BinaryTree");
formatSpec[(BinaryTree, BinaryTree)]("(BinaryTree, BinaryTree)")
formatSpec[SomeEnum.Value]("SomeEnum.Value")
}
|
