Travis-CI GoLang示例测试错误

huangapple
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英文:

Travis-CI GoLang Examples test error

问题

似乎找不到这个问题的答案。

我正在尝试使用Travis-CI来构建/运行我的GoLang包的测试，但是Travis在运行作为测试一部分的GoLang示例时失败。

例如，这是一个示例：

  1. func Example() {
  2. 	now := time.Date(2017, time.February, 1, 7, 51, 0, 0, time.Local)
  4. 	// instantiate a new Podcast
  5. 	p := podcast.New(
  6. 		"Sample Podcasts",
  7. 		"http://example.com/",
  8. 		"An example Podcast",
  9. 		&now, &now,
  10. 	)
  12. 	// add some channel properties
  13. 	p.ISubtitle = "A simple Podcast"
  14. 	p.AddImage("http://example.com/podcast.jpg")
  15. 	p.AddAuthor("Jane Doe", "jane.doe@example.com")
  17. 	for i := int64(0); i < 2; i++ {
  18. 		n := strconv.FormatInt(i, 10)
  20. 		// create an Item
  21. 		item := podcast.Item{
  22. 			Title:       "Episode " + n,
  23. 			Description: "Description for Episode " + n,
  24. 			ISubtitle:   "A simple episode " + n,
  25. 			PubDate:     &now,
  26. 		}
  27. 		// add a Download to the Item
  28. 		item.AddEnclosure("http://example.com/"+n+".mp3", podcast.MP3, 55*(i+1))
  30. 		// add the Item and check for validation errors
  31. 		if _, err := p.AddItem(item); err != nil {
  32. 			os.Stderr.WriteString("item validation error: " + err.Error())
  33. 		}
  34. 	}
  36. 	// Podcast.Encode writes to an io.Writer
  37. 	if err := p.Encode(os.Stdout); err != nil {
  38. 		os.Stderr.WriteString("error writing to stdout: " + err.Error())
  39. 	}
  41. 	// Output:
  42. 	// <?xml version="1.0" encoding="UTF-8"?>
  43. 	// <rss version="2.0" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd">
  44. 	//   <channel>
  45. 	//     <title>Sample Podcasts</title>
  46. 	//     <link>http://example.com/</link>
  47. 	//     <description>An example Podcast</description>
  48. 	//     <generator>go podcast v1.0.0 (github.com/eduncan911/podcast)</generator>
  49. 	//     <language>en-us</language>
  50. 	//     <lastBuildDate>Wed, 01 Feb 2017 07:51:00 -0500</lastBuildDate>
  51. 	//     <managingEditor>jane.doe@example.com (Jane Doe)</managingEditor>
  52. 	//     <pubDate>Wed, 01 Feb 2017 07:51:00 -0500</pubDate>
  53. 	//     <image>
  54. 	//       <url>http://example.com/podcast.jpg</url>
  55. 	//     </image>
  56. 	//     <itunes:author>jane.doe@example.com (Jane Doe)</itunes:author>
  57. 	//     <itunes:subtitle>A simple Podcast</itunes:subtitle>
  58. 	//     <itunes:image href="http://example.com/podcast.jpg"></itunes:image>
  59. 	//     <item>
  60. 	//       <guid>http://example.com/0.mp3</guid>
  61. 	//       <title>Episode 0</title>
  62. 	//       <link>http://example.com/0.mp3</link>
  63. 	//       <description>Description for Episode 0</description>
  64. 	//       <pubDate>Wed, 01 Feb 2017 07:51:00 -0500</pubDate>
  65. 	//       <enclosure url="http://example.com/0.mp3" length="55" type="audio/mpeg"></enclosure>
  66. 	//       <itunes:author>jane.doe@example.com (Jane Doe)</itunes:author>
  67. 	//       <itunes:subtitle>A simple episode 0</itunes:subtitle>
  68. 	//       <itunes:image href="http://example.com/podcast.jpg"></itunes:image>
  69. 	//       <itunes:duration>55</itunes:duration>
  70. 	//     </item>
  71. 	//     <item>
  72. 	//       <guid>http://example.com/1.mp3</guid>
  73. 	//       <title>Episode 1</title>
  74. 	//       <link>http://example.com/1.mp3</link>
  75. 	//       <description>Description for Episode 1</description>
  76. 	//       <pubDate>Wed, 01 Feb 2017 07:51:00 -0500</pubDate>
  77. 	//       <enclosure url="http://example.com/1.mp3" length="110" type="audio/mpeg"></enclosure>
  78. 	//       <itunes:author>jane.doe@example.com (Jane Doe)</itunes:author>
  79. 	//       <itunes:subtitle>A simple episode 1</itunes:subtitle>
  80. 	//       <itunes:image href="http://example.com/podcast.jpg"></itunes:image>
  81. 	//       <itunes:duration>110</itunes:duration>
  82. 	//     </item>
  83. 	//   </channel>
  84. 	// </rss>
  85. }

这是一个失败的Travis构建的链接，go test失败，尽管在本地运行正常：

https://travis-ci.org/eduncan911/podcast/builds/198093154

  1. $ go test -covermode count -coverprofile cover.out
  2. --- FAIL: Example (0.00s)
  3. got:
  4. <?xml version="1.0" encoding="UTF-8"?>
  5. ...(省略)
  7. want:
  8. <?xml version="1.0" encoding="UTF-8"?>
  9. ...(省略)

go test命令在本地的macOS、Windows 10虚拟机和EC2 Ubuntu实例上正常工作。

只有Travis无法运行带有示例的go test。

如果跳过示例，则测试通过：

  1. $ go test -run Test -covermode count -coverprofile cover.out

但这就失去了以下目的：

  1. 验证示例
  2. 将代码覆盖率报告从97%降至43%

（是的，我将示例用作代码覆盖率的一部分-我正在尝试撰写的博文的一部分，并使用Travis来展示它。但是，糟糕！Travis出错了！）

我怀疑Travis在stderr和/或stdout上做了一些奇怪的事情，将输出重定向到控制台/日志，这可能会阻止go test看到结果。

英文:

Can't seem to find an answer to this one.

I am trying to use Travis-CI to build/run tests for my GoLang package; but, Travis keeps failing on GoLang Examples that are running as part of the tests.

For example, here's one Example:

  1. func Example() {
  2. now := time.Date(2017, time.February, 1, 7, 51, 0, 0, time.Local)
  3. // instantiate a new Podcast
  4. p := podcast.New(
  5. &quot;Sample Podcasts&quot;,
  6. &quot;http://example.com/&quot;,
  7. &quot;An example Podcast&quot;,
  8. &amp;now, &amp;now,
  9. )
  10. // add some channel properties
  11. p.ISubtitle = &quot;A simple Podcast&quot;
  12. p.AddImage(&quot;http://example.com/podcast.jpg&quot;)
  13. p.AddAuthor(&quot;Jane Doe&quot;, &quot;jane.doe@example.com&quot;)
  14. for i := int64(0); i &lt; 2; i++ {
  15. n := strconv.FormatInt(i, 10)
  16. // create an Item
  17. item := podcast.Item{
  18. Title:       &quot;Episode &quot; + n,
  19. Description: &quot;Description for Episode &quot; + n,
  20. ISubtitle:   &quot;A simple episode &quot; + n,
  21. PubDate:     &amp;now,
  22. }
  23. // add a Download to the Item
  24. item.AddEnclosure(&quot;http://example.com/&quot;+n+&quot;.mp3&quot;, podcast.MP3, 55*(i+1))
  25. // add the Item and check for validation errors
  26. if _, err := p.AddItem(item); err != nil {
  27. os.Stderr.WriteString(&quot;item validation error: &quot; + err.Error())
  28. }
  29. }
  30. // Podcast.Encode writes to an io.Writer
  31. if err := p.Encode(os.Stdout); err != nil {
  32. os.Stderr.WriteString(&quot;error writing to stdout: &quot; + err.Error())
  33. }
  34. // Output:
  35. // &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  36. // &lt;rss version=&quot;2.0&quot; xmlns:itunes=&quot;http://www.itunes.com/dtds/podcast-1.0.dtd&quot;&gt;
  37. //   &lt;channel&gt;
  38. //     &lt;title&gt;Sample Podcasts&lt;/title&gt;
  39. //     &lt;link&gt;http://example.com/&lt;/link&gt;
  40. //     &lt;description&gt;An example Podcast&lt;/description&gt;
  41. //     &lt;generator&gt;go podcast v1.0.0 (github.com/eduncan911/podcast)&lt;/generator&gt;
  42. //     &lt;language&gt;en-us&lt;/language&gt;
  43. //     &lt;lastBuildDate&gt;Wed, 01 Feb 2017 07:51:00 -0500&lt;/lastBuildDate&gt;
  44. //     &lt;managingEditor&gt;jane.doe@example.com (Jane Doe)&lt;/managingEditor&gt;
  45. //     &lt;pubDate&gt;Wed, 01 Feb 2017 07:51:00 -0500&lt;/pubDate&gt;
  46. //     &lt;image&gt;
  47. //       &lt;url&gt;http://example.com/podcast.jpg&lt;/url&gt;
  48. //     &lt;/image&gt;
  49. //     &lt;itunes:author&gt;jane.doe@example.com (Jane Doe)&lt;/itunes:author&gt;
  50. //     &lt;itunes:subtitle&gt;A simple Podcast&lt;/itunes:subtitle&gt;
  51. //     &lt;itunes:image href=&quot;http://example.com/podcast.jpg&quot;&gt;&lt;/itunes:image&gt;
  52. //     &lt;item&gt;
  53. //       &lt;guid&gt;http://example.com/0.mp3&lt;/guid&gt;
  54. //       &lt;title&gt;Episode 0&lt;/title&gt;
  55. //       &lt;link&gt;http://example.com/0.mp3&lt;/link&gt;
  56. //       &lt;description&gt;Description for Episode 0&lt;/description&gt;
  57. //       &lt;pubDate&gt;Wed, 01 Feb 2017 07:51:00 -0500&lt;/pubDate&gt;
  58. //       &lt;enclosure url=&quot;http://example.com/0.mp3&quot; length=&quot;55&quot; type=&quot;audio/mpeg&quot;&gt;&lt;/enclosure&gt;
  59. //       &lt;itunes:author&gt;jane.doe@example.com (Jane Doe)&lt;/itunes:author&gt;
  60. //       &lt;itunes:subtitle&gt;A simple episode 0&lt;/itunes:subtitle&gt;
  61. //       &lt;itunes:image href=&quot;http://example.com/podcast.jpg&quot;&gt;&lt;/itunes:image&gt;
  62. //       &lt;itunes:duration&gt;55&lt;/itunes:duration&gt;
  63. //     &lt;/item&gt;
  64. //     &lt;item&gt;
  65. //       &lt;guid&gt;http://example.com/1.mp3&lt;/guid&gt;
  66. //       &lt;title&gt;Episode 1&lt;/title&gt;
  67. //       &lt;link&gt;http://example.com/1.mp3&lt;/link&gt;
  68. //       &lt;description&gt;Description for Episode 1&lt;/description&gt;
  69. //       &lt;pubDate&gt;Wed, 01 Feb 2017 07:51:00 -0500&lt;/pubDate&gt;
  70. //       &lt;enclosure url=&quot;http://example.com/1.mp3&quot; length=&quot;110&quot; type=&quot;audio/mpeg&quot;&gt;&lt;/enclosure&gt;
  71. //       &lt;itunes:author&gt;jane.doe@example.com (Jane Doe)&lt;/itunes:author&gt;
  72. //       &lt;itunes:subtitle&gt;A simple episode 1&lt;/itunes:subtitle&gt;
  73. //       &lt;itunes:image href=&quot;http://example.com/podcast.jpg&quot;&gt;&lt;/itunes:image&gt;
  74. //       &lt;itunes:duration&gt;110&lt;/itunes:duration&gt;
  75. //     &lt;/item&gt;
  76. //   &lt;/channel&gt;
  77. // &lt;/rss&gt;
  78. }

Here's a link to a specific Travis build that fails go test, even though it runs locally:

https://travis-ci.org/eduncan911/podcast/builds/198093154

  1. $ go test -covermode count -coverprofile cover.out
  2. --- FAIL: Example (0.00s)
  3. got:
  4. &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  5. ...(omitted)
  6. want:
  7. &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
  8. ...(omitted)

go test command works normally locally on macOS, in a Windows 10 VM and in an EC2 Ubuntu instances.

It is only Travis that is not able to to run go test, with examples.

If I skip the Examples, then the tests pass with:

  1. $ go test -run Test -covermode count -coverprofile cover.out

But that defeats the purpose of:

  1. Validating the Examples
  2. Drops code-coverage report from 97% down to 43%

(yes, I use Examples as part of code coverage - part of a blog post I am trying to write, and to use Travis to show it. but, uh, oops! travis errors!)

I suspect Travis is doing something funky with stderr and/or stdout, redirecting the output to the console/log which may prevent go test from seeing the results.

答案1

得分: 3

在Travis上，got和want的值并不相同。它们之间的差异在于时区偏移。

在你的本地机器上，time.Local 是 -0500，而在Travis上是 +0000。使用time.UTC或其他与代码运行的系统无关的位置：

  1. now := time.Date(2017, time.February, 1, 7, 51, 0, 0, time.UTC)
英文:

The got and want values on Travis are not identical. They differ by the time zone offset.

time.Local is -0500 on your local machine and +0000 on Travis. Use time.UTC or some other location that's independent of the system where the code is running running:

  1. now := time.Date(2017, time.February, 1, 7, 51, 0, 0, time.UTC)

huangapple
  • 本文由 发表于 2017年2月4日 09:01:07
  • 转载请务必保留本文链接：https://go.coder-hub.com/42035363.html
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