import Testing@testable import CodexBarCore struct CopilotBudgetCookieRoutingTests {    @Test    func `auto budget cookies ignore stale manual header`() {        let settings = ProviderSettingsSnapshot.CopilotProviderSettings(            budgetExtrasEnabled: true,            budgetCookieSource: .auto,            manualBudgetCookieHeader: "user_session=stale")         #expect(CopilotAPIFetchStrategy.budgetCookieHeaderOverride(from: settings) == nil)    }     @Test    func `manual budget cookies use trimmed manual header`() {        let settings = ProviderSettingsSnapshot.CopilotProviderSettings(            budgetExtrasEnabled: true,            budgetCookieSource: .manual,            manualBudgetCookieHeader: "  user_session=manual  ")         #expect(CopilotAPIFetchStrategy.budgetCookieHeaderOverride(from: settings) == "user_session=manual")    }     @Test    func `manual budget cookies require non-empty header`() {        let settings = ProviderSettingsSnapshot.CopilotProviderSettings(            budgetExtrasEnabled: true,            budgetCookieSource: .manual,            manualBudgetCookieHeader: "  ")         #expect(CopilotAPIFetchStrategy.budgetCookieHeaderOverride(from: settings) == nil)    }     @Test    func `invalid manual budget cookies do not fall back to browser import`() {        let settings = ProviderSettingsSnapshot.CopilotProviderSettings(            budgetExtrasEnabled: true,            budgetCookieSource: .manual,            manualBudgetCookieHeader: "Cookie:")         #expect(CopilotAPIFetchStrategy.budgetCookieHeaderOverride(from: settings) == nil)    }}