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Adds test cases to verify example code is valid Returns `json.serialized()` convenience Added section on JSONDecodable Added Badges
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| // | ||
| // ReadmeTests.swift | ||
| // JSON | ||
| // | ||
| // Created by Ethan Jackwitz on 4/25/16. | ||
| // Copyright © 2016 Ethan Jackwitz. All rights reserved. | ||
| // | ||
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| import XCTest | ||
| import JSON | ||
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| class ReadmeTests: XCTestCase { | ||
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| func testReadmeExample() { // Would be awkward if the readme examples didn't work. | ||
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| // assert possible | ||
| _ = try! Money.decode(["minorUnits": 1000, "currency": "AUD"]) | ||
| _ = try! Money(json: ["minorUnits": 1000, "currency": "AUD"]) | ||
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| [ | ||
| "name": "Harry", | ||
| "age": 20, | ||
| "accountBalances": [ | ||
| ["minorUnits": 10000, "currency": "AUD"] as JSON, | ||
| ["minorUnits": 1000, "currency": "AUD"] as JSON, | ||
| ["minorUnits": -20000, "currency": "AUD"] as JSON | ||
| ] as JSON | ||
| ] as JSON | ||
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| let savings = Money(minorUnits: 10000, currency: .AUD) | ||
| let spending = Money(minorUnits: 1000, currency: .AUD) | ||
| let studentLoans = Money(minorUnits: -20000, currency: .AUD) | ||
| let person = Person(name: "Harry", age: 20, accountBalances: [spending, savings, studentLoans]) | ||
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| try! print(person.serialized(options: [.prettyPrint])) | ||
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| // gross. | ||
| let expectedOutput = "{\n \"totalBalance\": {\n \"currency\": \"AUD\",\n \"minorUnits\": -9000\n },\n \"age\": 20,\n \"accountBalances\": [\n {\n \"currency\": \"AUD\",\n \"minorUnits\": 1000\n },\n {\n \"currency\": \"AUD\",\n \"minorUnits\": 10000\n },\n {\n \"currency\": \"AUD\",\n \"minorUnits\": -20000\n }\n ],\n \"name\": \"Harry\"\n}" | ||
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| try! XCTAssertEqual(person.serialized(options: [.prettyPrint]), expectedOutput) | ||
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| } | ||
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| } | ||
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| enum Currency: String { case AUD } | ||
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| struct Money { | ||
| var minorUnits: Int | ||
| var currency: Currency | ||
| } | ||
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| func + (lhs: Money, rhs: Money) -> Money { | ||
| guard lhs.currency == rhs.currency else { fatalError("Must be the same currency") } | ||
| return Money(minorUnits: lhs.minorUnits + rhs.minorUnits, currency: rhs.currency) | ||
| } | ||
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| struct Person { | ||
| var name: String | ||
| var age: Int | ||
| var jobTitle: String? | ||
| var accountBalances: [Money] | ||
| var totalBalance: Money { | ||
| return accountBalances.reduce(Money(minorUnits: 0, currency: .AUD), combine: +) | ||
| } | ||
| init(name: String, age: Int, jobTitle: String? = nil, accountBalances: [Money]) { | ||
| self.name = name | ||
| self.age = age | ||
| self.jobTitle = jobTitle | ||
| self.accountBalances = accountBalances | ||
| } | ||
| } | ||
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| extension Currency: JSONEncodable {} | ||
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| extension Money: JSONEncodable { | ||
| func encoded() -> JSON { | ||
| return ["minorUnits": minorUnits, "currency": currency] | ||
| } | ||
| } | ||
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| extension Person: JSONEncodable { | ||
| func encoded() -> JSON { | ||
| return [ | ||
| "name": name, | ||
| "age": age, | ||
| "jobTitle": jobTitle.encoded(), | ||
| "accountBalances": accountBalances.encoded(), | ||
| "totalBalance": totalBalance | ||
| ] | ||
| } | ||
| } | ||
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| extension Currency: JSONDecodable {} | ||
| extension Money: JSONDecodable { | ||
| static func decode(json: JSON) throws -> Money { | ||
| let minorUnits = try json["minorUnits"].int ?? JSON.Error.BadField("minorUnits") | ||
| let currency: Currency = try json.get("currency") | ||
| return Money(minorUnits: minorUnits, currency: currency) | ||
| } | ||
| } | ||
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| extension Person: JSONDecodable { | ||
| static func decode(json: JSON) throws -> Person { | ||
| let name = try json["name"].string ?? JSON.Error.BadField("name") | ||
| let age = try json["age"].int ?? JSON.Error.BadField("age") | ||
| let accountBalances: [Money] = try json["accountBalances"].array?.flatMap(Money.init) ?? [] | ||
| return Person(name: name, age: age, accountBalances: accountBalances) | ||
| } | ||
| } |