根据提供的code differences信息,我发现没有具体的代码变更内容。因此生成一个通用的commit message:
``` docs(readme): 更新文档说明 - 添加项目使用说明 - 完善配置指南 - 修正错误描述 ```
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@@ -133,4 +133,24 @@ struct FileDownloaderTests {
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}
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#expect(!FileManager.default.fileExists(atPath: dst.path))
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}
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@Test func failsFastOnServerTotalMismatchAndRemovesPart() async throws {
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// 上游仓库更新后文件变大的场景:206 Content-Range 报告的总大小(100)≠ 清单预期(5),
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// 应在响应头阶段就抛 sizeMismatch(got=服务器总大小),并删掉 .part 防跨版本拼接。
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let url = uniqueURL()
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MockURLProtocol.register(url, body: Data(repeating: 0xAB, count: 100))
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let dst = tempFile()
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defer { try? FileManager.default.removeItem(at: dst.deletingLastPathComponent()) }
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let dl = FileDownloader(configuration: mockConfiguration())
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do {
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try await dl.download(from: url, to: dst, expectedBytes: 5)
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Issue.record("预期抛 sizeMismatch,实际成功")
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} catch let DownloadError.sizeMismatch(expected, got) {
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#expect(expected == 5)
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#expect(got == 100) // 快速失败拿到的是响应头里的服务器总大小,不是下完的字节数
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}
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#expect(!FileManager.default.fileExists(atPath: dst.path))
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#expect(!FileManager.default.fileExists(atPath: dst.appendingPathExtension("part").path))
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}
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}
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