如果我正在使用MSTest,有没有办法测试visual studio中的代码覆盖率?或者我必须购买NCover?
如果微软没有提供内置工具来进行代码覆盖,那么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包括代码覆盖 https://www.visualstudio.com/vs/compare/
如果您的VS版本不支持,可以使用TestDriven.NET(http://testdriven.net/)。
答案 0 :(得分:14)
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文件并将其作为解决方案的一部分添加。双击此文件,找到对话框左侧的“代码覆盖率”选项。选择要为其收集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,然后单击代码覆盖率结果按钮,这将打开一个包含结果的备用窗口。
答案 1 :(得分:13)
MSTest包括代码覆盖率,至少在我拥有的VS版本中。但是,您需要在testrunconfig中启用检测,这只是丑陋而且是主要的PITA。
更简单的选择是使用TestDriven.NET,即使对于MSTest,也可以自动覆盖。而且由于它使用了MSTest核心,你仍然可以获得所有的VS优点,例如着色(覆盖代码的红/蓝线)。请参阅here(包括截屏视频),或者因为图片上写了千言万语:
(来源:mutantdesign.co.uk)
答案 2 :(得分:7)
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.com/2011/09/convert-mstest-code-covarage-results-in.html
我在这里张贴了xsl"以防万一"这些网址将来会消亡。 将下面的xsl放在名为" 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/download/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:
Code Coverage files merging using code in VS 2012 Dynamic Code Coverage
答案 3 :(得分:0)
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。