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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,27 @@ | ||
| // | ||
| // Safe.swift | ||
| // SwiftExtensions | ||
| // | ||
| // Created by Tatsuya Tanaka on 20171218. | ||
| // Copyright © 2017年 tattn. All rights reserved. | ||
| // | ||
|
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| import Foundation | ||
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| public struct Safe<Wrapped: Decodable>: Codable { | ||
| public let value: Wrapped? | ||
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| public init(from decoder: Decoder) throws { | ||
| do { | ||
| let container = try decoder.singleValueContainer() | ||
| self.value = try container.decode(Wrapped.self) | ||
| } catch { | ||
| self.value = nil | ||
| } | ||
| } | ||
|
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| public func encode(to encoder: Encoder) throws { | ||
| var container = encoder.singleValueContainer() | ||
| try container.encodeNil() | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,32 @@ | ||
| // | ||
| // CodableStringTo.swift | ||
| // CodableExtensionPack | ||
| // | ||
| // Created by Tatsuya Tanaka on 20171030. | ||
| // Copyright © 2017年 tattn. All rights reserved. | ||
| // | ||
|
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| import Foundation | ||
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| public struct StringTo<T: LosslessStringConvertible>: Codable { | ||
| public let value: T | ||
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| public init(from decoder: Decoder) throws { | ||
| let container = try decoder.singleValueContainer() | ||
| let stringValue = try container.decode(String.self) | ||
|
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| guard let value = T(stringValue) else { | ||
| throw DecodingError.dataCorrupted( | ||
| .init(codingPath: decoder.codingPath, | ||
| debugDescription: "The string cannot cast to \(T.self).") | ||
| ) | ||
| } | ||
|
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| self.value = value | ||
| } | ||
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| public func encode(to encoder: Encoder) throws { | ||
| var container = encoder.singleValueContainer() | ||
| try container.encode(value.description) | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,61 @@ | ||
| // | ||
| // SafeTests.swift | ||
| // CodableExtensionPackTests | ||
| // | ||
| // Created by Tatsuya Tanaka on 20171128. | ||
| // Copyright © 2017年 tattn. All rights reserved. | ||
| // | ||
|
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| import XCTest | ||
| import SwiftExtensions | ||
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| class SafeTests: XCTestCase { | ||
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| override func setUp() { | ||
| super.setUp() | ||
| } | ||
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| override func tearDown() { | ||
| super.tearDown() | ||
| } | ||
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| func testFailableArray() { | ||
| let json = """ | ||
| [ | ||
| {"name": "Taro", "age": 20}, | ||
| {"name": "Hanako", "age": "にゃーん"} | ||
| ] | ||
| """.data(using: .utf8)! | ||
|
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| struct User: Decodable { | ||
| let name: String | ||
| let age: Int | ||
| } | ||
|
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| let users = try! JSONDecoder().decode([Safe<User>].self, | ||
| from: json) | ||
|
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| XCTAssertEqual(users[0].value?.name, "Taro") | ||
| XCTAssertEqual(users[0].value?.age, 20) | ||
| XCTAssertNil(users[1].value) | ||
| } | ||
|
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| func testFailableURL() { | ||
| let json = """ | ||
| {"url": "https://foo.com", "url2": "invalid url string"} | ||
| """.data(using: .utf8)! | ||
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| struct Model: Decodable { | ||
| let url: Safe<URL> | ||
| let url2: Safe<URL> | ||
| } | ||
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| let model = try! JSONDecoder().decode(Model.self, | ||
| from: json) | ||
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| XCTAssertEqual(model.url.value?.absoluteString, "https://foo.com") | ||
| XCTAssertNil(model.url2.value) | ||
| } | ||
|
|
||
| } | ||
|
|
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| // | ||
| // CodableStringToTests.swift | ||
| // CodableExtensionPackTests | ||
| // | ||
| // Created by Tatsuya Tanaka on 20171030. | ||
| // Copyright © 2017年 tattn. All rights reserved. | ||
| // | ||
|
|
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| import XCTest | ||
| import SwiftExtensions | ||
|
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| class StringToTests: XCTestCase { | ||
|
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| // https://developer.yahoo.co.jp/webapi/shopping/shopping/v1/itemsearch.html | ||
| let json = """ | ||
| { | ||
| "int": "100", | ||
| "customClass": "https://store.shopping.yahoo.co.jp/try3/4905524907230.html" | ||
| } | ||
| """ | ||
| struct Root: Codable { | ||
| let int: StringTo<Int> | ||
| let customClass: StringTo<CustomClass> | ||
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| struct CustomClass: LosslessStringConvertible, Codable { | ||
| var description: String | ||
|
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| init?(_ description: String) { | ||
| self.description = description | ||
| } | ||
| } | ||
| } | ||
|
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| override func setUp() { | ||
| super.setUp() | ||
| } | ||
|
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| override func tearDown() { | ||
| super.tearDown() | ||
| } | ||
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| func testExample() { | ||
| let data = json.data(using: .utf8)! | ||
| let decoder = JSONDecoder() | ||
| let root = try! decoder.decode(Root.self, from: data) | ||
| XCTAssertEqual(root.int.value, 100) | ||
| XCTAssertEqual(root.customClass.value.description, "https://store.shopping.yahoo.co.jp/try3/4905524907230.html") | ||
| } | ||
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| } | ||
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