我想在TFS Service（托管的TFS2012）中使构建失败，当代码覆盖率低于一个阈值时。
我一直在尝试应用这个解决方案：http://scrumdod.blogspot.co.uk/2011/04/fail-build-if-code-coverage-is-low.html
然而，我使用的是TFS2012，很多东西似乎已经改变了。特别是，测试运行的配置完全不同，无论是在构建过程模板还是在.runsettings文件中，都没有找到获取或设置.coverage文件的位置和名称的方法。
如何查找（或设置）.coverage文件在TFS2012或TFSService中的位置呢？
或者，是否有其他方法可以在代码覆盖率低于阈值时使构建失败？
在VS2012中创建一个新项目（我称之为CodeCoverageLibrary）。引用以下程序集：
您可以使用以下代码：
using System;
using System.Activities;
using System.Collections.Generic;
using Microsoft.TeamFoundation.Build.Client;
using Microsoft.TeamFoundation.Client;
using Microsoft.TeamFoundation.TestManagement.Client;
namespace CodeCoverageLibrary
{
[BuildActivity(HostEnvironmentOption.All)]
public sealed class GetCodeCoverage : CodeActivity<double>
{
public InArgument<IBuildDetail> BuildDetail { get; set; }
protected override double Execute(CodeActivityContext context)
{
var buildDetail = BuildDetail.Get(context);
var buildCoverages = GetBuildCoverages(buildDetail.BuildServer.TeamProjectCollection.Uri,
buildDetail.TeamProject, buildDetail.Uri);
return GetTotalCoverage(buildCoverages);
}
private static IEnumerable<IBuildCoverage> GetBuildCoverages(Uri uri, string projectName, Uri buildUri)
{
return TfsTeamProjectCollectionFactory.GetTeamProjectCollection(uri)
.GetService<ITestManagementService>()
.GetTeamProject(projectName)
.CoverageAnalysisManager.QueryBuildCoverage(buildUri.ToString(),
CoverageQueryFlags.Modules);
}
private static double GetTotalCoverage(IEnumerable<IBuildCoverage> buildCoverages)
{
int totalCoveredBlocks = 0, totalUncoveredBlocks = 0;
foreach (var buildCoverage in buildCoverages)
{
foreach (var module in buildCoverage.Modules)
{
totalCoveredBlocks += module.Statistics.BlocksCovered;
totalUncoveredBlocks += module.Statistics.BlocksNotCovered;
}
}
return (totalCoveredBlocks == 0 && totalUncoveredBlocks == 0)
? 0.0
: ((double) totalCoveredBlocks) /
((double) (totalCoveredBlocks + totalUncoveredBlocks));
}
}
}
编译项目并将其添加到 TFS 上的版本控制路径中。
在 Team Explorer 中，转到生成 > 操作 > 管理生成控制器......。然后单击构建控制器的属性...。在版本控制路径到自定义程序集下，输入您上面使用的路径。
将BuildProcessTemplates\DefaultTemplate.11.1.xaml复制到一个新文件。
更新新 XAML 文件的开头，包括以下内容：
<Activity ...
xmlns:ccl="clr-namespace:CodeCoverageLibrary;assembly=CodeCoverageLibrary"
...
>
<x:Members>
...
<x:Property Name="CodeCoverageTolerance" Type="InArgument(x:Double)" />
</x:Members>
...
<this:Process.Metadata>
<mtbw:ProcessParameterMetadataCollection>
...
<mtbw:ProcessParameterMetadata BrowsableWhen="EditingDefinition" Category="#900 Misc" DisplayName="CodeCoverageTolerance" Description="If the overall code coverage drops below this threshold, then the build will fail. This is a number between 0 and 1." ParameterName="CodeCoverageTolerance" />
</mtbw:ProcessParameterMetadataCollection>
</this:Process.Metadata>
请更新XAML文件的结尾以包含以下内容：
<Sequence DisplayName="Code Coverage Check" mtbwt:BuildTrackingParticipant.Importance="None">
<Sequence.Variables>
<Variable x:TypeArguments="x:Double" Name="CodeCovered" />
</Sequence.Variables>
<ccl:GetCodeCoverage DisplayName="Getting Code Coverage" BuildDetail="[BuildDetail]" Result="[CodeCovered]" />
<If Condition="[CodeCovered < CodeCoverageTolerance]">
<If.Then>
<Sequence DisplayName="Comparing Code Coverage Against Tolerance">
<mtbwa:SetBuildProperties DisplayName="Set TestStatus to Failed" mtbwt:BuildTrackingParticipant.Importance="Low" PropertiesToSet="TestStatus" TestStatus="[Microsoft.TeamFoundation.Build.Client.BuildPhaseStatus.Failed]" />
<mtbwa:WriteBuildError Message="["Code Coverage of " + CodeCovered.ToString("P") + " is less than required " + CodeCoverageTolerance.ToString("P")]" />
</Sequence>
</If.Then>
</If>
</Sequence>
</mtbwa:AgentScope>
<mtbwa:InvokeForReason DisplayName="Check In Gated Changes for CheckInShelveset Builds" Reason="CheckInShelveset">
<mtbwa:CheckInGatedChanges DisplayName="Check In Gated Changes" />
</mtbwa:InvokeForReason>
</Sequence>
</Activity>
将其提交到TFS中。
在Team Explorer中，进入构建并右键单击您的构建定义，选择编辑构建定义... > 过程。展开构建流程模板，单击新建...。单击选择现有的XAML文件并输入新XAML文件的路径。单击确定。现在，在4. 杂项下应该会看到CodeCoverageTolerance。您可以输入0到1之间的数字来表示所需的百分比。
关于上面的解决方案，只有一件事需要注意，你应该修改计算方式以确保返回一个保留两位小数的百分比值。
return (totalCoveredBlocks == 0 && totalUncoveredBlocks == 0)
? 0.0
: Math.Round(((double)totalCoveredBlocks) /
((double)(totalCoveredBlocks + totalUncoveredBlocks)) * 100, 2);