July 2019
Intermediate to advanced
480 pages
9h 35m
Chinese
Content preview from 持續交付｜使用Java
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| 第十一章
final FlagDTO flag = restTemplate.getForObject(flagUrl, FlagDTO.class);
return Optional.ofNullable(flag);
} catch (HttpClientErrorException | HttpServerErrorException |
ResourceAccessException | HttpMessageNotReadableException e) {
final String msg = "Failed to retrieve flag %s; falling back to no flag";
LOGGER.info(format(msg, flagId), e);
return Optional.empty();
}
}
注意技術堆疊有多少部分有被測試
當你執行容錯測試時，很容易會模仿比你原先認為的還要多的技術堆疊。
這會讓測試變得脆弱。
單元測試
近年來，
單元測試
已經相當普遍了，所以或許你已經不需要學習它的基本知識了。
坊間有無數的資源解釋單元測試與 TDD 以及它的主要工具：JUnit、TestNG 之類的
框架，或是執行測試的 Spock，以及 Mockito、JMock 等程式庫，或模仿依賴項目的
PowerMock。除了上述的工具之外，還有一些程式庫值得一提，它們可協助編寫更具表
達性的斷言，例如 Hamcrest 或 Fest-Assert，但它們都不是新鮮的東西。 ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.