AnyCodable/Tests/AnyCodableTests/AnyCodableTests.swift at 7aff90ec906e3d3c6ebaa97ca00ab0f30619c6a1 · Flight-School/AnyCodable · GitHub

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
@testable import AnyCodable
import XCTest


class AnyCodableTests: XCTestCase {

    struct SomeCodable: Codable {
        var string: String
        var int: Int
        var bool: Bool
        var hasUnderscore: String

        enum CodingKeys: String,CodingKey {
            case string
            case int
            case bool
            case hasUnderscore = "has_underscore"
        }
    }

    func testJSONDecoding() throws {
        let json = """
        {
            "boolean": true,
            "integer": 42,
            "double": 3.141592653589793,
            "string": "string",
            "array": [1, 2, 3],
            "nested": {
                "a": "alpha",
                "b": "bravo",
                "c": "charlie"
            },
            "null": null
        }
        """.data(using: .utf8)!

        let decoder = JSONDecoder()
        let dictionary = try decoder.decode([String: AnyCodable].self, from: json)

        XCTAssertEqual(dictionary["boolean"]?.value as? Bool, true)
        XCTAssertEqual(dictionary["integer"]?.value as? Int, 42)
        XCTAssertEqual(try XCTUnwrap(dictionary["double"]?.value as? Double), 3.141592653589793, accuracy: 0.001)
        XCTAssertEqual(dictionary["string"]?.value as? String, "string")
        XCTAssertEqual(dictionary["array"]?.value as? [Int], [1, 2, 3])
        XCTAssertEqual(dictionary["nested"]?.value as? [String: String], ["a": "alpha", "b": "bravo", "c": "charlie"])
        XCTAssertEqual(dictionary["null"]?.value as? NSNull, NSNull())
    }

    func testJSONDecodingEquatable() throws {
        let json = """
        {
            "boolean": true,
            "integer": 42,
            "double": 3.141592653589793,
            "string": "string",
            "array": [1, 2, 3],
            "nested": {
                "a": "alpha",
                "b": "bravo",
                "c": "charlie"
            },
            "null": null
        }
        """.data(using: .utf8)!

        let decoder = JSONDecoder()
        let dictionary1 = try decoder.decode([String: AnyCodable].self, from: json)
        let dictionary2 = try decoder.decode([String: AnyCodable].self, from: json)

        XCTAssertEqual(dictionary1["boolean"], dictionary2["boolean"])
        XCTAssertEqual(dictionary1["integer"], dictionary2["integer"])
        XCTAssertEqual(dictionary1["double"], dictionary2["double"])
        XCTAssertEqual(dictionary1["string"], dictionary2["string"])
        XCTAssertEqual(dictionary1["array"], dictionary2["array"])
        XCTAssertEqual(dictionary1["nested"], dictionary2["nested"])
        XCTAssertEqual(dictionary1["null"], dictionary2["null"])
    }

    func testJSONEncoding() throws {

        let someCodable = AnyCodable(SomeCodable(string: "String", int: 100, bool: true, hasUnderscore: "another string"))

        let injectedValue = 1234
        let dictionary: [String: AnyCodable] = [
            "boolean": true,
            "integer": 42,
            "double": 3.141592653589793,
            "string": "string",
            "stringInterpolation": "string \(injectedValue)",
            "array": [1, 2, 3],
            "nested": [
                "a": "alpha",
                "b": "bravo",
                "c": "charlie",
            ],
            "someCodable": someCodable,
            "null": nil
        ]

        let encoder = JSONEncoder()

        let json = try encoder.encode(dictionary)

        let expected = """
        {
            "boolean": true,
            "integer": 42,
            "double": 3.141592653589793,
            "string": "string",
            "stringInterpolation": "string 1234",
            "array": [1, 2, 3],
            "nested": {
                "a": "alpha",
                "b": "bravo",
                "c": "charlie"
            },
            "someCodable": {
                "string":"String",
                "int":100,
                "bool": true,
                "has_underscore":"another string"
            },
            "null": null
        }
        """
        try XCTAssertJsonAreIdentical(json, expected)
    }
}