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/*
This source file is part of the Swift.org open source project
Copyright (c) 2021 Apple Inc. and the Swift project authors
Licensed under Apache License v2.0 with Runtime Library Exception
See https://swift.org/LICENSE.txt for license information
See https://swift.org/CONTRIBUTORS.txt for Swift project authors
*/
import Foundation
import XCTest
import SymbolKit
@testable import SwiftDocC
class DocumentationDataVariantsTests: XCTestCase {
func testAccessesVariantWithTrait() throws {
var variants = DocumentationDataVariants<String>(values: [.swift : "Swift"])
XCTAssertEqual(variants[.swift], "Swift")
let objectiveCTrait = DocumentationDataVariantsTrait(interfaceLanguage: "objc")
XCTAssertNil(variants[objectiveCTrait])
variants[objectiveCTrait] = "Objective-C"
XCTAssertEqual(variants[objectiveCTrait], "Objective-C")
}
func testReturnsDefaultValueInAllValues() throws {
let variants = DocumentationDataVariants<String>(defaultVariantValue: "Default value")
XCTAssertEqual(variants.allValues.count, 1)
let first = try XCTUnwrap(variants.allValues.first)
XCTAssertEqual(first.trait, .fallback)
XCTAssertEqual(first.variant, "Default value")
}
func testSetsDefaultValueWhenTraitIsFallback() throws {
var variants = DocumentationDataVariants<String>()
variants[.fallback] = "Default value"
let first = try XCTUnwrap(variants.allValues.first)
XCTAssertEqual(first.trait, .fallback)
XCTAssertEqual(first.variant, "Default value")
}
func testIsEmpty() throws {
XCTAssert(DocumentationDataVariants<String>().isEmpty)
XCTAssertFalse(DocumentationDataVariants<String>(values: [.swift : "Swift"]).isEmpty)
}
func testHasVariant() throws {
XCTAssert(DocumentationDataVariants<String>(values: [.swift : "Swift"]).hasVariant(for: .swift))
XCTAssertFalse(DocumentationDataVariants<String>().hasVariant(for: .swift))
}
func testSwiftVariantInitializer() throws {
XCTAssertEqual(DocumentationDataVariants<String>(swiftVariant: "Swift")[.swift], "Swift")
XCTAssertNil(DocumentationDataVariants<String>(swiftVariant: nil)[.swift])
}
func testFirstValue() throws {
// This is testing that the first value has a stable and deterministic behavior (rdar://86580516)
let objectiveCTrait = DocumentationDataVariantsTrait(interfaceLanguage: "objc")
XCTAssertEqual(DocumentationDataVariants<String>(values: [:]).firstValue, nil)
XCTAssertEqual(DocumentationDataVariants<String>(values: [.swift : "Swift"]).firstValue, "Swift")
XCTAssertEqual(DocumentationDataVariants<String>(values: [objectiveCTrait : "Objective-C"]).firstValue, "Objective-C")
// Swift is treated as the first value when there are multiple values
XCTAssertEqual(DocumentationDataVariants<String>(values: [
objectiveCTrait : "Objective-C",
.swift: "Swift"
]).firstValue, "Swift")
XCTAssertEqual(DocumentationDataVariants<String>(values: [
objectiveCTrait : "Objective-C",
.swift: "Swift",
.fallback: "Fallback"
]).firstValue, "Swift")
var variants = DocumentationDataVariants<String>(defaultVariantValue: "Default value")
XCTAssertEqual(variants.firstValue, "Default value")
variants[.swift] = "Swift"
XCTAssertEqual(variants.firstValue, "Swift")
variants[objectiveCTrait] = "Objective-C"
XCTAssertEqual(variants.firstValue, "Swift") // Swift is still treated as the default value.
}
func testInitializesUsingSelectorLanguage() {
XCTAssertEqual(
DocumentationDataVariantsTrait(
for: UnifiedSymbolGraph.Selector(
interfaceLanguage: "MyLanguage",
platform: nil
)
).interfaceLanguage,
"MyLanguage"
)
}
}
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