MSTest 代码覆盖率
https://stackoverflow.com/questions/415562
-
03-07-2019 - |
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如果我使用 MSTest，有没有办法在 Visual Studio 中测试代码覆盖率？还是我必须购买NCover？
如果 Microsoft 不提供内置工具来进行代码覆盖，NCover Enterprise 是否物有所值，或者旧的测试版是否足够好？
编辑：VS 产品的描述以及哪些产品包含代码覆盖率https://www.visualstudio.com/vs/compare/
测试驱动.NET (http://testdriven.net/）如果你的VS版本不支持可以使用。
解决方案
是的，您可以在 Visual Studio 中找到代码覆盖率信息，前提是您拥有提供该功能的 Visual Studio 版本（例如 Team System）。在 VS.NET 中设置单元测试时，将创建 localtestrun.testrunconfig 文件并将其添加为解决方案的一部分。双击该文件，在对话框左侧找到Code Coverage选项。选择要收集其代码覆盖率信息的程序集，然后重新运行单元测试。代码覆盖率信息将被收集并可用。要获取代码覆盖率信息，请打开测试结果窗口并单击代码覆盖率结果按钮，这将打开另一个包含结果的窗口。
其他提示
对于未来的读者：
哇，这不好玩。我希望这可以帮助那些在互联网上的人。请注意“CodeCoverage.exe”的存在。可能取决于您拥有的Visual Studio版本。您可能必须在构建服务器中安装VS（某些增强版本）。
set __msTestExe=C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\MSTest.exe
set __codeCoverageExe=C:\Program Files (x86)\Microsoft Visual Studio 14.0\Team Tools\Dynamic Code Coverage Tools\CodeCoverage.exe
rem (the below is a custom C# console application, code seen below)
set __customCodeCoverageMergerExe=CoverageCoverterConsoleApp.exe
rem below exe is from https://www.microsoft.com/en-us/download/details.aspx?id=21714
set __msXslExe=C:\MyProgFiles\MsXslCommandLine\msxsl.exe
REM the below calls will create the binary *.coverage files
"%__codeCoverageExe%" collect /output:"D:\BuildStuff\TestResults\AAA_DynamicCodeCoverage.coverage" "%__msTestExe%" /testcontainer:"D:\BuildStuff\BuildResults\My.UnitTests.One.dll" /resultsfile:"D:\BuildStuff\TestResults\My.UnitTests.One.trx"
"%__codeCoverageExe%" collect /output:"D:\BuildStuff\TestResults\BBB_DynamicCodeCoverage.coverage" "%__msTestExe%" /testcontainer:"D:\BuildStuff\BuildResults\My.UnitTests.Two.dll" /resultsfile:"D:\BuildStuff\TestResults\My.UnitTests.Two.trx"
"%__codeCoverageExe%" collect /output:"D:\BuildStuff\TestResults\CCC_DynamicCodeCoverage.coverage" "%__msTestExe%" /testcontainer:"D:\BuildStuff\BuildResults\My.UnitTests.Three.dll" /resultsfile:"D:\BuildStuff\TestResults\My.UnitTests.Three.trx"
rem below, the first argument is the new file, the 2nd through "N" args are the result-files from the three "%__codeCoverageExe%" collect above
rem this will take the three binary *.coverage files and turn them into one .xml file
"%__customCodeCoverageMergerExe%" "D:\BuildStuff\TestResults\DynamicCodeCoverage.merged.coverage.converted.xml" "D:\BuildStuff\TestResults\AAA_DynamicCodeCoverage.coverage" "D:\BuildStuff\TestResults\BBB_DynamicCodeCoverage.coverage" "D:\BuildStuff\TestResults\CCC_DynamicCodeCoverage.coverage"
"%__msXslExe%" "D:\BuildStuff\TestResults\DynamicCodeCoverage.merged.coverage.converted.xml" "D:\BuildStuff\Xsl\VSCoverageToHtml.xsl" -o "D:\BuildStuff\TestResults\CodeCoverageReport.html"
您还可以将3个UnitTests.dlls组合成一个调用
REM the below calls will create the binary *.coverage files
"%__codeCoverageExe%" collect /output:"D:\BuildStuff\TestResults\ZZZ_DynamicCodeCoverage.coverage" "%__msTestExe%" /testcontainer:"D:\BuildStuff\BuildResults\My.UnitTests.One.dll" /testcontainer:"D:\BuildStuff\BuildResults\My.UnitTests.Two.dll" /testcontainer:"D:\BuildStuff\BuildResults\My.UnitTests.Three.dll" /resultsfile:"D:\BuildStuff\TestResults\My.UnitTests.AllOfThem.trx"
rem below, the first argument is the new file, the 2nd through "N" args are the result-files from the three "%__codeCoverageExe%" collect above
rem this will take the one binary *.coverage files and turn them into one .xml file
"%__customCodeCoverageMergerExe%" "D:\BuildStuff\TestResults\DynamicCodeCoverage.merged.coverage.converted.xml" "D:\BuildStuff\TestResults\ZZZ_DynamicCodeCoverage.coverage"
"%__msXslExe%" "D:\BuildStuff\TestResults\DynamicCodeCoverage.merged.coverage.converted.xml" "D:\BuildStuff\Xsl\VSCoverageToHtml.xsl" -o "D:\BuildStuff\TestResults\CodeCoverageReport.html"
VSCoverageToHtml.xsl
我还在互联网上找到了一些xsl。 （下面的3个链接几乎是相同的xsl）
http://codetuner.blogspot.com/2011_09_01_archive.html
http://jp.axtstar.com/?page_id=258
http：//codetuner.blogspot的.com / 2011/09 /转换-MSTEST码-covarage-成果in.html
我在这里张贴xsl“以防万一”那些URL将来会死掉。 将下面的xsl放在一个名为“VSCoverageToHtml.xsl”的文件中。 （如上所述）。
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="html" indent="yes"/>
<xsl:template match="/" >
<html>
<head>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"/>
<style type="text/css">
th {
background-color:#dcdcdc;
border:solid 1px #a9a9a9;
text-indent:2pt;
font-weight:bolder;
}
#data {
text-align: center;
}
</style>
<script language="JavaScript" type="text/javascript" >
function CreateJavescript(){
var fileref=document.createElement('script');
fileref.setAttribute("type","text/javascript");
fileref.setAttribute("src", "script1.js");
document.getElementsByTagName("head")[0].appendChild(fileref);
}
function toggleDetail(control) {
var ctrlId = $(control).attr('Id');
$("tr[id='"+ctrlId +"']").toggle();
}
</script>
<title>Code Coverage Report</title>
</head>
<body onload='CreateJavescript()' >
<h1>Code Coverage Report</h1>
<table border="1">
<tr>
<th colspan="3"/>
<th>Name</th>
<th>Blocks Covered</th>
<th>Blocks Not Covered</th>
<th>Coverage</th>
</tr>
<xsl:apply-templates select="//CoverageDSPriv/Module" />
</table>
</body>
</html>
</xsl:template>
<xsl:template match="Module">
<xsl:variable name="parentId" select="generate-id(./..)" />
<xsl:variable name="currentId" select="generate-id(.)" />
<tr id="{$parentId}">
<td id="{$currentId}" colspan="3" onClick="toggleDetail(this)" onMouseOver="this.style.cursor= 'pointer' ">[+]</td>
<td>
<xsl:value-of select="ModuleName" />
</td>
<td id="data">
<xsl:value-of select="BlocksCovered" />
</td>
<td id="data">
<xsl:value-of select="BlocksNotCovered" />
</td>
<xsl:call-template name="CoverageColumn">
<xsl:with-param name="covered" select="BlocksCovered" />
<xsl:with-param name="uncovered" select="BlocksNotCovered" />
</xsl:call-template>
</tr>
<xsl:apply-templates select="NamespaceTable" />
<tr id="{$currentId}-end" style="display: none;">
<td colspan="5"/>
</tr>
</xsl:template>
<xsl:template match="NamespaceTable">
<xsl:variable name="parentId" select="generate-id(./..)" />
<xsl:variable name="currentId" select="generate-id(.)" />
<tr id="{$parentId}" style="display: none;">
<td> - </td>
<td id="{$currentId}"
colspan="2"
onClick="toggleDetail(this)"
onMouseOver="this.style.cursor= 'pointer' ">[+]</td>
<td>
<xsl:value-of select="NamespaceName" />
</td>
<td id="data">
<xsl:value-of select="BlocksCovered" />
</td>
<td id="data">
<xsl:value-of select="BlocksNotCovered" />
</td>
<xsl:call-template name="CoverageColumn">
<xsl:with-param name="covered" select="BlocksCovered" />
<xsl:with-param name="uncovered" select="BlocksNotCovered" />
</xsl:call-template>
</tr>
<xsl:apply-templates select="Class" />
<tr id="{$currentId}-end" style="display: none;">
<td colspan="5"/>
</tr>
</xsl:template>
<xsl:template match="Class">
<xsl:variable name="parentId" select="generate-id(./..)" />
<xsl:variable name="currentId" select="generate-id(.)" />
<tr id="{$parentId}" style="display: none;">
<td> - </td>
<td> - </td>
<td id="{$currentId}"
onClick="toggleDetail(this)"
onMouseOver="this.style.cursor='pointer' ">[+]</td>
<td>
<xsl:value-of select="ClassName" />
</td>
<td id="data">
<xsl:value-of select="BlocksCovered" />
</td>
<td id="data">
<xsl:value-of select="BlocksNotCovered" />
</td>
<xsl:call-template name="CoverageColumn">
<xsl:with-param name="covered" select="BlocksCovered" />
<xsl:with-param name="uncovered" select="BlocksNotCovered" />
</xsl:call-template>
</tr>
<xsl:apply-templates select="Method" />
<tr id="{$currentId}-end" style="display: none;">
<td colspan="5"/>
</tr>
</xsl:template>
<xsl:template match="Method">
<xsl:variable name="parentId" select="generate-id(./..)" />
<tr id="{$parentId}" style="display: none;">
<td> -</td>
<td> - </td>
<td> - </td>
<td>
<xsl:value-of select="MethodName" />
</td>
<td id="data">
<xsl:value-of select="BlocksCovered" />
</td>
<td id="data">
<xsl:value-of select="BlocksNotCovered" />
</td>
<xsl:call-template name="CoverageColumn">
<xsl:with-param name="covered" select="BlocksCovered" />
<xsl:with-param name="uncovered" select="BlocksNotCovered" />
</xsl:call-template>
</tr>
</xsl:template>
<xsl:template name="CoverageColumn">
<xsl:param name="covered" select="0" />
<xsl:param name="uncovered" select="0" />
<td id="data">
<xsl:variable name="percent"
select="($covered div ($covered + $uncovered)) * 100" />
<xsl:attribute name="style">
background-color:
<xsl:choose>
<xsl:when test="number($percent >= 90)">#86ed60;</xsl:when>
<xsl:when test="number($percent >= 70)">#ffff99;</xsl:when>
<xsl:otherwise>#FF7979;</xsl:otherwise>
</xsl:choose>
</xsl:attribute>
<xsl:if test="$percent > 0">
<xsl:value-of select="format-number($percent, '###.##' )" />%
</xsl:if>
<xsl:if test="$percent = 0">
<xsl:text>0.00%</xsl:text>
</xsl:if>
</td>
</xsl:template>
</xsl:stylesheet>
这是一个小帮助的命令行工具。
https://www.microsoft.com/en -us /下载/ details.aspx？ID = 21714
using System;
using Microsoft.VisualStudio.Coverage.Analysis;
using System.Collections.Generic;
/* References
\ThirdPartyReferences\Microsoft Visual Studio 11.0\Microsoft.VisualStudio.Coverage.Analysis.dll
\ThirdPartyReferences\Microsoft Visual Studio 11.0\Microsoft.VisualStudio.Coverage.Interop.dll
*/
namespace MyCompany.VisualStudioExtensions.CodeCoverage.CoverageCoverterConsoleApp
{
class Program
{
static int Main(string[] args)
{
if (args.Length < 2)
{
Console.WriteLine("Coverage Convert - reads VStest binary code coverage data, and outputs it in XML format.");
Console.WriteLine("Usage: ConverageConvert <destinationfile> <sourcefile1> <sourcefile2> ... <sourcefileN>");
return 1;
}
string destinationFile = args[0];
//destinationFile = @"C:\TestResults\MySuperMergedCoverage.coverage.converted.to.xml";
List<string> sourceFiles = new List<string>();
//files.Add(@"C:\MyCoverage1.coverage");
//files.Add(@"C:\MyCoverage2.coverage");
//files.Add(@"C:\MyCoverage3.coverage");
/* get all the file names EXCEPT the first one */
for (int i = 1; i < args.Length; i++)
{
sourceFiles.Add(args[i]);
}
CoverageInfo mergedCoverage;
try
{
mergedCoverage = JoinCoverageFiles(sourceFiles);
}
catch (Exception e)
{
Console.WriteLine("Error opening coverage data: {0}", e.Message);
return 1;
}
CoverageDS data = mergedCoverage.BuildDataSet();
try
{
data.WriteXml(destinationFile);
}
catch (Exception e)
{
Console.WriteLine("Error writing to output file: {0}", e.Message);
return 1;
}
return 0;
}
private static CoverageInfo JoinCoverageFiles(IEnumerable<string> files)
{
if (files == null)
throw new ArgumentNullException("files");
// This will represent the joined coverage files
CoverageInfo returnItem = null;
string path;
try
{
foreach (string sourceFile in files)
{
// Create from the current file
path = System.IO.Path.GetDirectoryName(sourceFile);
CoverageInfo current = CoverageInfo.CreateFromFile(sourceFile, new string[] { path }, new string[] { path });
if (returnItem == null)
{
// First time through, assign to result
returnItem = current;
continue;
}
// Not the first time through, join the result with the current
CoverageInfo joined = null;
try
{
joined = CoverageInfo.Join(returnItem, current);
}
finally
{
// Dispose current and result
current.Dispose();
current = null;
returnItem.Dispose();
returnItem = null;
}
returnItem = joined;
}
}
catch (Exception)
{
if (returnItem != null)
{
returnItem.Dispose();
}
throw;
}
return returnItem;
}
}
}
另见：
代码使用VS 2012动态代码覆盖率中的代码合并覆盖文件
如果您没有Visual Studio终极版，您还可以使用此MSBuild任务生成代码覆盖率报告。
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