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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| // | ||
| // NestedChoiceArrayTest.swift | ||
| // XMLCoder | ||
| // | ||
| // Created by Benjamin Wetherfield on 8/22/19. | ||
| // | ||
|
|
||
| import XCTest | ||
| @testable import XMLCoder | ||
|
|
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| private struct Book: Decodable { | ||
| let title: String | ||
| let chapters: [Chapter] | ||
|
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| enum CodingKeys: String, CodingKey { | ||
| case title | ||
| case chapters | ||
| } | ||
|
|
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| init(from decoder: Decoder) throws { | ||
| let container = try decoder.container(keyedBy: CodingKeys.self) | ||
| title = try container.decode(String.self, forKey: .title) | ||
|
|
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| var chapters = [Chapter]() | ||
|
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| if var chapterContainer = try? container.nestedUnkeyedContainer(forKey: .chapters) { | ||
| while !chapterContainer.isAtEnd { | ||
| chapters.append(try chapterContainer.decode(Chapter.self)) | ||
| } | ||
| } | ||
|
|
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| self.chapters = chapters | ||
| } | ||
|
|
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| init(title: String, chapters: [Chapter]) { | ||
| self.title = title | ||
| self.chapters = chapters | ||
| } | ||
| } | ||
|
|
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| private enum Chapter { | ||
| struct Content { | ||
| let title: String | ||
| let content: String | ||
| } | ||
|
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| case intro(Content) | ||
| case body(Content) | ||
| case outro(Content) | ||
| } | ||
|
|
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| private enum BookError: Error { | ||
| case unknownChapterType | ||
| } | ||
|
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| extension Chapter: Decodable { | ||
| enum CodingKeys: String, XMLChoiceCodingKey { | ||
| case intro, body = "chapter", outro | ||
| } | ||
|
|
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| init(from decoder: Decoder) throws { | ||
| let container = try decoder.container(keyedBy: CodingKeys.self) | ||
| do { | ||
| self = .body(try container.decode(Content.self, forKey: .body)) | ||
| } catch { | ||
| do { | ||
| self = .intro(try container.decode(Content.self, forKey: .intro)) | ||
| } catch { | ||
| self = .outro(try container.decode(Content.self, forKey: .outro)) | ||
| } | ||
| } | ||
| } | ||
| } | ||
|
|
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| extension Chapter.Content: Decodable { | ||
| enum CodingKeys: String, CodingKey { | ||
| case title | ||
| case value = "" | ||
| } | ||
|
|
||
| init(from decoder: Decoder) throws { | ||
| let container = try decoder.container(keyedBy: CodingKeys.self) | ||
|
|
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| title = try container.decode(String.self, forKey: .title) | ||
| content = try container.decode(String.self, forKey: .value) | ||
| } | ||
| } | ||
|
|
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| extension Book: Equatable {} | ||
| extension Chapter: Equatable {} | ||
| extension Chapter.Content: Equatable {} | ||
|
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| class NestedChoiceArrayTest: XCTestCase { | ||
| func testDecodingNestedChoiceArray() throws { | ||
| let xml = """ | ||
| <?xml version="1.0" encoding="UTF-8"?> | ||
| <book title="Example"> | ||
| <chapters> | ||
| <intro title="Intro">Content of first chapter</intro> | ||
| <chapter title="Chapter 1">Content of chapter 1</chapter> | ||
| <chapter title="Chapter 2">Content of chapter 2</chapter> | ||
| <outro title="Epilogue">Content of last chapter</outro> | ||
| </chapters> | ||
| </book> | ||
| """ | ||
| let decoded = try XMLDecoder().decode(Book.self, from: xml.data(using: .utf8)!) | ||
| let expected = Book(title: "Example", | ||
| chapters: [ | ||
| .intro(.init(title: "Intro", content: "Content of first chapter")), | ||
| .body(.init(title: "Chapter 1", content: "Content of chapter 1")), | ||
| .body(.init(title: "Chapter 2", content: "Content of chapter 2")), | ||
| .outro(.init(title: "Epilogue", content: "Content of last chapter")), | ||
| ]) | ||
| XCTAssertEqual(decoded, expected) | ||
| } | ||
| } |
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