// PangoSmoke.swift
// Tier-3-only runtime smoke test for Pango (Phase E2). Proves — against
// the REAL libpango, linked at runtime — that:
//   1. `findBaseDir(text:length:)` reaches the real `pango_find_base_dir`
//      C call, correctly marshalling a Swift `String` through `withCString`
//      and marshalling the returned `PangoDirection` C enum back into the
//      Swift `Direction` enum via `numericCast`.
//   2. The result reflects the REAL Unicode bidirectional algorithm run by
//      libpango — not stubbed/placeholder data — by exercising both a
//      strong-LTR script (Latin) and a strong-RTL script (Hebrew) and
//      asserting the opposite directions libpango is known to report.
//
// Not generated. `scripts/smoke-test.sh <tier>` copies tier 1 and the selected
// tier's fixtures for tiers 2 through 5. Tier 6/all copies every tier's fixtures
// into one full-stack SmokeTests target. Only installed for tier >= 3.

import Testing

import GLib
import GObject
import Pango

@Suite("Tier 3 Pango smoke tests")
struct PangoSmokeTests {
    @Test("findBaseDir(text:length:) reaches the real pango_find_base_dir and reports LTR for Latin script")
    func findBaseDirLatinIsLTR() throws {
        let text = "hello world"
        let direction = findBaseDir(text: text, length: -1)
        #expect(direction == .ltr)
    }

    @Test("findBaseDir(text:length:) reaches the real pango_find_base_dir and reports RTL for Hebrew script")
    func findBaseDirHebrewIsRTL() throws {
        let text = "שלום עולם"
        let direction = findBaseDir(text: text, length: -1)
        #expect(direction == .rtl)
    }
}