module builder

import os
import v.ast
import v.pref

fn test_ensure_imported_coroutines_runtime_downloads_photonwrapper() {
    $if !macos && !linux {
        // coroutines are only supported on macOS & Linux — see pref.ensure_coroutines_runtime
        return
    }
    test_root := os.join_path(os.vtmp_dir(), 'v_builder_coroutines_runtime')
    os.rmdir_all(test_root) or {}
    defer {
        os.rmdir_all(test_root) or {}
    }
    fake_vexe := os.join_path(test_root, 'v')
    os.mkdir_all(test_root) or { panic(err) }
    os.write_file(fake_vexe, '#!/bin/sh
if [ "\$1" = "download" ] && [ "\$2" = "-o" ]; then
    mkdir -p "\$(dirname "\$3")"
    : > "\$3"
    exit 0
fi
exit 1
') or {
        panic(err)
    }
    os.chmod(fake_vexe, 0o700) or { panic(err) }
    old_vexe := os.getenv('VEXE')
    old_dyld_paths := os.getenv('DYLD_FALLBACK_LIBRARY_PATH')
    defer {
        if old_vexe == '' {
            os.unsetenv('VEXE')
        } else {
            os.setenv('VEXE', old_vexe, true)
        }
        if old_dyld_paths == '' {
            os.unsetenv('DYLD_FALLBACK_LIBRARY_PATH')
        } else {
            os.setenv('DYLD_FALLBACK_LIBRARY_PATH', old_dyld_paths, true)
        }
    }
    os.setenv('VEXE', fake_vexe, true)
    mut table := ast.new_table()
    table.imports << 'coroutines'
    mut b := Builder{
        pref:  &pref.Preferences{}
        table: table
    }
    b.ensure_imported_coroutines_runtime() or { panic(err) }
    assert os.exists(os.join_path(test_root, 'thirdparty', 'photon', 'photonwrapper.so'))
}