131 lines
3.0 KiB
Swift
131 lines
3.0 KiB
Swift
import Foundation
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import Testing
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@testable import Localization
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@Suite(
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"Negotiate method",
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.tags(.method)
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)
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struct NegotiateTests {
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// MARK: Constants
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private let negotiate = Negotiate(bundle: .module)
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// MARK: Functional tests
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@Test
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func `matches an exact language tag`() {
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let language = negotiate(acceptLanguage: "de")
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#expect(language == "de")
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}
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@Test
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func `matches a regional language tag`() {
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let language = negotiate(acceptLanguage: "de-AT")
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#expect(language == "de")
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}
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@Test
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func `matches a regional catalog language exactly`() {
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let language = negotiate(acceptLanguage: "pt-BR")
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#expect(language == "pt-BR")
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}
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@Test
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func `matches a regional catalog language by its primary subtag`() {
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let language = negotiate(acceptLanguage: "pt")
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#expect(language == "pt-BR")
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}
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@Test
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func `respects the header order of preference`() {
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let language = negotiate(acceptLanguage: "de, en")
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#expect(language == "de")
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}
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@Test
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func `orders the language tags by descending quality weight`() {
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let language = negotiate(acceptLanguage: "en;q=0.5, de;q=0.9")
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#expect(language == "de")
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}
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@Test
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func `treats a tag without a weight as the highest preference`() {
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let language = negotiate(acceptLanguage: "en;q=0.9, de")
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#expect(language == "de")
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}
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@Test
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func `treats a tag with a malformed weight as the highest preference`() {
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let language = negotiate(acceptLanguage: "en;q=0.9, de;q=broken")
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#expect(language == "de")
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}
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@Test
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func `drops language tags weighted as not acceptable`() {
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let language = negotiate(acceptLanguage: "de;q=0, en;q=0.8")
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#expect(language == "en")
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}
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@Test
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func `falls back to the default when every tag is weighted as not acceptable`() {
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let language = negotiate(acceptLanguage: "de;q=0, fr;q=0")
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#expect(language == "en")
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}
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@Test
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func `serves the default language for a wildcard`() {
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let language = negotiate(acceptLanguage: "fr;q=0.9, *;q=0.5")
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#expect(language == "en")
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}
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@Test
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func `trims whitespace around the language tags`() {
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let language = negotiate(acceptLanguage: " de , en ")
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#expect(language == "de")
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}
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@Test
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func `falls back to the default for an unsupported language`() {
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let language = negotiate(acceptLanguage: "fr")
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#expect(language == "en")
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}
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@Test
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func `falls back to the default for a missing header`() {
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let language = negotiate(acceptLanguage: nil)
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#expect(language == "en")
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}
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@Test
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func `falls back to the default for an empty header`() {
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let language = negotiate(acceptLanguage: "")
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#expect(language == "en")
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}
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@Test
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func `falls back to the default for a header without language tags`() {
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let language = negotiate(acceptLanguage: " , ;q=0.5,")
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#expect(language == "en")
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}
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}
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