release: v0.2.4 里程碑快照(孤儿提交,无父;树 = dev 68362e5)
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本批内容见 CHANGELOG.md 的 0.2.4 段。按 D41 用孤儿快照推 main,保留「公开史只有里程碑」的模型。
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AskaEth committed 2026-11-11 21:41:38 +08:00
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//! `SourceFailed.kind` 的另一半(M197 复审 P2-2):**404 是「该源没有这个文件」**,不是「源坏了」。
//!
//! 两档在引擎里的后果不同:`NotFound` 走 `record_missing`(不冷却源),`ServerError` 走
//! `record_failure`。院校镜像只留最新补丁,请求旧补丁必然 404——判成「源坏了」会把唯一可用镜像
//! 冷却掉(M33/M34 实测)。
//!
//! 变异证明:把 `engine.rs` / `bytes.rs` 的 `kind: err.kind` 改成常量 `Network` ⇒ 本条与
//! `reports_progress_events_and_errors_when_all_sources_fail` 一起红。
//!
//! 拆成子模块:`engine_mock_test.rs` 加了这条之后 407 行,越过 400 行硬线(`guards.yml` 的
//! `file-size`),于是把整条用例搬出来。
use std::sync::Arc;
use unlucky_core::download::cache::ContentCache;
use unlucky_core::download::engine::DownloadEngine;
use unlucky_core::download::error::DownloadErrorKind;
use unlucky_core::download::health::HealthRegistry;
use unlucky_core::download::mirrors::MirrorTable;
use unlucky_core::download::progress::{ProgressEmitter, ProgressEvent};
use unlucky_core::download::types::{DownloadRequest, ResourceKind};
use super::support::{temp_dir, MockResponse, MockServer};
use super::{direct_region, fast_config};
#[tokio::test]
async fn a_404_is_classified_as_not_found() {
let server = MockServer::start(vec![
MockResponse::status(404),
MockResponse::status(404),
MockResponse::status(404),
MockResponse::status(404),
])
.await;
let url = server.url("/gone.jar");
let dir = temp_dir("engine-404");
let (emitter, mut events) = ProgressEmitter::channel();
let engine = DownloadEngine::new(
fast_config(1),
Arc::new(MirrorTable::builtin()),
Arc::new(direct_region()),
Arc::new(HealthRegistry::in_memory()),
Arc::new(ContentCache::open(dir.join("cache"))),
)
.with_progress(emitter);
engine
.download(DownloadRequest::new(
ResourceKind::Library,
url.as_str(),
dir.join("gone.jar"),
))
.await
.expect_err("只有 404 的源必须失败");
let mut seen: Vec<DownloadErrorKind> = Vec::new();
while let Ok(event) = events.try_recv() {
if let ProgressEvent::SourceFailed { kind, .. } = event {
seen.push(kind);
}
}
assert!(!seen.is_empty(), "至少要有一条 SourceFailed");
assert!(
seen.iter().all(|kind| *kind == DownloadErrorKind::NotFound),
"404 必须分类成 NotFound,实际:{seen:?}"
);
server.stop();
}