Visual Studio團隊服務（VSO）茉莉花測試用例代碼覆蓋率

我們正在使用通過karma測試運行器執行的茉莉花測試框架。一切正常，在我的地方不錯，但在團隊服務（以前VSO），而我們試圖執行測試用例，成功執行所有測試用例，但即使通過拋出以下錯誤Visual Studio團隊服務（VSO）茉莉花測試用例代碼覆蓋率

PhantomJS 2.1.1 (Windows 8 0.0.0): Executed 139 of 139 SUCCESS (1.389 secs/1.41 secs) 
    TOTAL: 139 SUCCESS 
    Finished 'test' after 1.05 min 
    C:\Program Files\nodejs\npm.cmd install istanbul 
    npm WARN optional Skipping failed optional dependency /chokidar/fsevents: 
    npm WARN notsup Not compatible with your operating system or architecture: [email protected] 
    npm WARN [email protected] No description 
    npm WARN [email protected] No repository field. 
    C:\Program Files\nodejs\node.exe ./node_modules/istanbul/lib/cli.js cover --report cobertura --report html -i .\src\*.ts ./node_modules/jasmine/bin/jasmine.js JASMINE_CONFIG_PATH=node_modules/jasmine/lib/examples/jasmine.json **/*specs.ts 
    Started 
    No specs found 
    Finished in 0.001 seconds 
    No coverage information was collected, exit without writing coverage information 
    Starting 'Publish-CodeCoverage' cmdlet... 
    Fetched BuildId '656'. 
    System.ArgumentException: File 'C:\a\1\s\coverage\cobertura-coverage.xml' does not exist or is not accessible. 
    at Microsoft.TeamFoundation.DistributedTask.Task.CodeCoverage.SummaryReader.ReadSummaryFile(String summaryXmlLocation) 
    at Microsoft.TeamFoundation.DistributedTask.Task.CodeCoverage.CoberturaSummaryReader.GetCodeCoverageSummary(String summaryXmlLocation) 
    at Microsoft.TeamFoundation.DistributedTask.Task.CodeCoverage.PublishCodeCoverageCmd.TryGenerateAndPublishCodeCoverageSummary() 
    at Microsoft.TeamFoundation.DistributedTask.Task.CodeCoverage.PublishCodeCoverageCmd.ProcessRecord()

建立有利的後的代碼覆蓋率爲空定義代碼覆蓋率