Error during reading report 'jacoco.xml' (Size: 6.6KB): Object reference not set to an instance of an object.

[amatkivskiy]

Hi @danielpalme
Thanks for this project, really nice tool.

Unfortunately while using it in Azure Pipelines I found that ReportGenerator fails to generate html report for the jacoco xml report that I have (basically it generates empty html, where everything is 0).

So what I did:

• download latest release binaries archive from https://github.com/danielpalme/ReportGenerator/releases/tag/v4.3.6
• Run ReportGenerator.exe with the following config

ReportGenerator_4.3.6\net47>ReportGenerator.exe -reports:jacoco.xml -targetdir:html -reporttypes:HtmlInline_AzurePipelines  -verbosity:Verbose

• get command log:

ReportGenerator_4.3.6\net47>ReportGenerator.exe -reports:jacoco.xml -targetdir:html -reporttypes:HtmlInline_AzurePipelines  -verbosity:Verbose
2019-12-12T07:04:53: Arguments
2019-12-12T07:04:53:  -reports:jacoco.xml
2019-12-12T07:04:53:  -targetdir:html
2019-12-12T07:04:53:  -reporttypes:HtmlInline_AzurePipelines
2019-12-12T07:04:53:  -verbosity:Verbose
2019-12-12T07:04:53: Executable: ReportGenerator_4.3.6\net47\ReportGenerator.Core.dll
2019-12-12T07:04:53: Working directory: ReportGenerator_4.3.6\net47
2019-12-12T07:04:53: Settings
2019-12-12T07:04:53:  { "NumberOfReportsParsedInParallel": 1, "NumberOfReportsMergedInParallel": 1, "MaximumNumberOfHistoricCoverageFiles": 100, "RenderPngFallBackImagesForHistoryCharts": false, "CachingDuringOfRemoteFilesInMinutes": 10080, "DisableRiskHotspots": false }
2019-12-12T07:04:53:  { "MetricThresholdForCyclomaticComplexity": 30, "MetricThresholdForCrapScore": 15, "MetricThresholdForNPathComplexity": 200 }
2019-12-12T07:04:53: Loading report 'ReportGenerator_4.3.6\net47\jacoco.xml' 1/1 in memory
2019-12-12T07:04:53:  Preprocessing report
2019-12-12T07:04:53:   No source directories supplied for 'JaCoCo' coverage file
2019-12-12T07:04:53:  Initiating parser for JaCoCo
2019-12-12T07:04:53:   Current Assembly: com/java/android/example/domain/model
2019-12-12T07:04:53:  Error during reading report 'ReportGenerator_4.3.6\net47\jacoco.xml' (Size: 6.6KB): Object reference not set to an instance of an object.
2019-12-12T07:04:53: Parsing of 1 files completed.
2019-12-12T07:04:53: Coverage report parsing took 0.1 seconds
2019-12-12T07:04:53: Initializing report builders for report types: HtmlInline_AzurePipelines
2019-12-12T07:04:53: Analyzing 0 classes
2019-12-12T07:04:53:  Creating summary
2019-12-12T07:04:53:   Writing report file 'html\index.htm'
2019-12-12T07:04:53: Report generation took 0.2 seconds

Files:
jacoco.xml

[danielpalme]

Will have look within the next days.

[danielpalme]

Please try again with new release 4.3.8

[amatkivskiy]

@danielpalme Thanks for a quick fix. I confirm that this issue is not reproduced in release 4.3.8 .