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
|
/*
* Copyright (C) 2011 Mathias Doenitz
*
* 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.
*/
package spray.json
import org.specs2.mutable._
class ProductFormatsSpec extends Specification {
case class Test2(a: Int, b: Option[Double])
case class Test3[A, B](as: List[A], bs: List[B])
case class TestTransient(a: Int, b: Option[Double]) {
@transient var c = false
}
trait TestProtocol {
this: DefaultJsonProtocol =>
implicit val test2Format = jsonFormat2(Test2)
implicit def test3Format[A: JsonFormat, B: JsonFormat] = jsonFormat2(Test3.apply[A, B])
implicit def testTransientFormat = jsonFormat2(TestTransient)
}
object TestProtocol1 extends DefaultJsonProtocol with TestProtocol
object TestProtocol2 extends DefaultJsonProtocol with TestProtocol with NullOptions
"A JsonFormat created with `jsonFormat`, for a case class with 2 elements," should {
import TestProtocol1._
val obj = Test2(42, Some(4.2))
val json = JsObject("a" -> JsNumber(42), "b" -> JsNumber(4.2))
"convert to a respective JsObject" in {
obj.toJson mustEqual json
}
"convert a JsObject to the respective case class instance" in {
json.convertTo[Test2] mustEqual obj
}
"throw a DeserializationException if the JsObject does not all required members" in (
JsObject("b" -> JsNumber(4.2)).convertTo[Test2] must
throwA(new DeserializationException("Object is missing required member 'a'"))
)
"not require the presence of optional fields for deserialization" in {
JsObject("a" -> JsNumber(42)).convertTo[Test2] mustEqual Test2(42, None)
}
"not render `None` members during serialization" in {
Test2(42, None).toJson mustEqual JsObject("a" -> JsNumber(42))
}
"ignore additional members during deserialization" in {
JsObject("a" -> JsNumber(42), "b" -> JsNumber(4.2), "c" -> JsString('no)).convertTo[Test2] mustEqual obj
}
"not depend on any specific member order for deserialization" in {
JsObject("b" -> JsNumber(4.2), "a" -> JsNumber(42)).convertTo[Test2] mustEqual obj
}
"throw a DeserializationException if the JsValue is not a JsObject" in (
JsNull.convertTo[Test2] must throwA(new DeserializationException("Object expected"))
)
}
"A JsonProtocol mixing in NullOptions" should {
"render `None` members to `null`" in {
import TestProtocol2._
Test2(42, None).toJson mustEqual JsObject("a" -> JsNumber(42), "b" -> JsNull)
}
}
"A JsonFormat for a generic case class and created with `jsonFormat`" should {
import TestProtocol1._
val obj = Test3(42 :: 43 :: Nil, "x" :: "y" :: "z" :: Nil)
val json = JsObject(
"as" -> JsArray(JsNumber(42), JsNumber(43)),
"bs" -> JsArray(JsString("x"), JsString("y"), JsString("z"))
)
"convert to a respective JsObject" in {
obj.toJson mustEqual json
}
"convert a JsObject to the respective case class instance" in {
json.convertTo[Test3[Int, String]] mustEqual obj
}
}
"A JsonFormat for a generic case class with an explicitly provided type parameter" should {
"support the jsonFormat1 syntax" in {
case class Box[A](a: A)
object BoxProtocol extends DefaultJsonProtocol {
implicit val boxFormat = jsonFormat1(Box[Int])
}
import BoxProtocol._
Box(42).toJson === JsObject(Map("a" -> JsNumber(42)))
}
}
"A JsonFormat for a case class with transient fields and created with `jsonFormat`" should {
import TestProtocol1._
val obj = TestTransient(42, Some(4.2))
val json = JsObject("a" -> JsNumber(42), "b" -> JsNumber(4.2))
"convert to a respective JsObject" in {
obj.toJson mustEqual json
}
"convert a JsObject to the respective case class instance" in {
json.convertTo[TestTransient] mustEqual obj
}
}
}
|
