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
|
{- This Source Code Form is subject to the terms of the Mozilla Public License,
v. 2.0. If a copy of the MPL was not distributed with this file, You can
obtain one at https://mozilla.org/MPL/2.0/. -}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE QuasiQuotes #-}
module Test.FragmentSpec
( spec
) where
import Data.Aeson ((.=))
import qualified Data.Aeson as Aeson
import qualified Data.HashMap.Strict as HashMap
import Data.Text (Text)
import Language.GraphQL
import Language.GraphQL.Type
import qualified Language.GraphQL.Type.Out as Out
import Test.Hspec (Spec, describe, it)
import Test.Hspec.GraphQL
import Text.RawString.QQ (r)
size :: (Text, Value)
size = ("size", String "L")
circumference :: (Text, Value)
circumference = ("circumference", Int 60)
garment :: Text -> (Text, Value)
garment typeName =
("garment", Object $ HashMap.fromList
[ if typeName == "Hat" then circumference else size
, ("__typename", String typeName)
]
)
inlineQuery :: Text
inlineQuery = [r|{
garment {
... on Hat {
circumference
}
... on Shirt {
size
}
}
}|]
shirtType :: Out.ObjectType IO
shirtType = Out.ObjectType "Shirt" Nothing [] $ HashMap.fromList
[ ("size", sizeFieldType)
]
hatType :: Out.ObjectType IO
hatType = Out.ObjectType "Hat" Nothing [] $ HashMap.fromList
[ ("size", sizeFieldType)
, ("circumference", circumferenceFieldType)
]
circumferenceFieldType :: Out.Resolver IO
circumferenceFieldType
= Out.ValueResolver (Out.Field Nothing (Out.NamedScalarType int) mempty)
$ pure $ snd circumference
sizeFieldType :: Out.Resolver IO
sizeFieldType
= Out.ValueResolver (Out.Field Nothing (Out.NamedScalarType string) mempty)
$ pure $ snd size
toSchema :: Text -> (Text, Value) -> Schema IO
toSchema t (_, resolve) = Schema
{ query = queryType, mutation = Nothing, subscription = Nothing }
where
garmentType = Out.UnionType "Garment" Nothing [hatType, shirtType]
typeNameField = Out.Field Nothing (Out.NamedScalarType string) mempty
garmentField = Out.Field Nothing (Out.NamedUnionType garmentType) mempty
queryType =
case t of
"circumference" -> hatType
"size" -> shirtType
_ -> Out.ObjectType "Query" Nothing []
$ HashMap.fromList
[ ("garment", ValueResolver garmentField (pure resolve))
, ("__typename", ValueResolver typeNameField (pure $ String "Shirt"))
]
spec :: Spec
spec = do
describe "Inline fragment executor" $ do
it "chooses the first selection if the type matches" $ do
actual <- graphql (toSchema "Hat" $ garment "Hat") inlineQuery
let expected = HashMap.singleton "data"
$ Aeson.object
[ "garment" .= Aeson.object
[ "circumference" .= (60 :: Int)
]
]
in actual `shouldResolveTo` expected
it "chooses the last selection if the type matches" $ do
actual <- graphql (toSchema "Shirt" $ garment "Shirt") inlineQuery
let expected = HashMap.singleton "data"
$ Aeson.object
[ "garment" .= Aeson.object
[ "size" .= ("L" :: Text)
]
]
in actual `shouldResolveTo` expected
it "embeds inline fragments without type" $ do
let sourceQuery = [r|{
circumference
... {
size
}
}|]
actual <- graphql (toSchema "circumference" circumference) sourceQuery
let expected = HashMap.singleton "data"
$ Aeson.object
[ "circumference" .= (60 :: Int)
, "size" .= ("L" :: Text)
]
in actual `shouldResolveTo` expected
it "evaluates fragments on Query" $ do
let sourceQuery = [r|{
... {
size
}
}|]
in graphql (toSchema "size" size) `shouldResolve` sourceQuery
describe "Fragment spread executor" $ do
it "evaluates fragment spreads" $ do
let sourceQuery = [r|
{
...circumferenceFragment
}
fragment circumferenceFragment on Hat {
circumference
}
|]
actual <- graphql (toSchema "circumference" circumference) sourceQuery
let expected = HashMap.singleton "data"
$ Aeson.object
[ "circumference" .= (60 :: Int)
]
in actual `shouldResolveTo` expected
it "evaluates nested fragments" $ do
let sourceQuery = [r|
{
garment {
...circumferenceFragment
}
}
fragment circumferenceFragment on Hat {
...hatFragment
}
fragment hatFragment on Hat {
circumference
}
|]
actual <- graphql (toSchema "Hat" $ garment "Hat") sourceQuery
let expected = HashMap.singleton "data"
$ Aeson.object
[ "garment" .= Aeson.object
[ "circumference" .= (60 :: Int)
]
]
in actual `shouldResolveTo` expected
it "considers type condition" $ do
let sourceQuery = [r|
{
garment {
...circumferenceFragment
...sizeFragment
}
}
fragment circumferenceFragment on Hat {
circumference
}
fragment sizeFragment on Shirt {
size
}
|]
expected = HashMap.singleton "data"
$ Aeson.object
[ "garment" .= Aeson.object
[ "circumference" .= (60 :: Int)
]
]
actual <- graphql (toSchema "Hat" $ garment "Hat") sourceQuery
actual `shouldResolveTo` expected
|
