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Serenity Report Generation failure when using JUnit5 DataDriven Testing using @CsvFileSource | java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null #2869

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sumit12071988 opened this issue Jul 14, 2022 · 4 comments
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Serenity Report Generation failure when using JUnit5 DataDriven Testing using @CsvFileSource | java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null #2869

sumit12071988 opened this issue Jul 14, 2022 · 4 comments

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@sumit12071988
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Serenity version used: 3.2.5
Junit5 version used : 5.9.0-M1

@ExtendWith(SerenityJUnit5Extension.class)
class b_DataDrivenTestingUsingCSVTest {
    @Managed(driver = "chrome", options = "--headless")
    WebDriver driver;

    TwoInputFieldForm twoInputFieldForm;

    @ParameterizedTest(name = "First element: {0} | Second element: {1} | Summation Result: {2}")   // {x} is the value from I/P parameter it will fetch during each iteration
    **@CsvFileSource**(files = "src/test/resources/testdata/calculations.csv", numLinesToSkip = 1)
    void shouldCalculateTheCorrectTotal(String a, String b, String calculatedTotal){
        twoInputFieldForm.open();

        twoInputFieldForm.enterA(a);
        twoInputFieldForm.enterB(b);
        twoInputFieldForm.getTotal();

        assertThat(twoInputFieldForm.displayedTotal()).isEqualTo(calculatedTotal);
    }
}

Error logs:
[INFO]
[INFO] Results:
[INFO]
[INFO] Tests run: 6, Failures: 0, Errors: 0, Skipped: 0
[INFO]
[INFO]
[INFO] --- serenity-maven-plugin:3.2.5:aggregate (serenity-reports) @ SerenityJunit5 ---
[WARNING] Failed to generate report for Test Summary Report - java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null
java.base/java.util.ArrayList.(ArrayList.java:181)
java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null
at java.util.concurrent.FutureTask.report (FutureTask.java:122)
at java.util.concurrent.FutureTask.get (FutureTask.java:205)
at net.thucydides.core.reports.html.Reporter.generateReports (Reporter.java:56)
at net.thucydides.core.reports.html.Reporter.generateReportsFor (Reporter.java:32)
at net.thucydides.core.reports.html.HtmlAggregateStoryReporter.generateReportsForTestResultsIn (HtmlAggregateStoryReporter.java:222)
at net.thucydides.core.reports.html.HtmlAggregateStoryReporter.generateReportsForTestResultsFrom (HtmlAggregateStoryReporter.java:135)
at net.serenitybdd.maven.plugins.SerenityAggregatorMojo.generateHtmlStoryReports (SerenityAggregatorMojo.java:252)
at net.serenitybdd.maven.plugins.SerenityAggregatorMojo.execute (SerenityAggregatorMojo.java:195)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:301)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:211)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:165)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:157)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:121)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:127)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:77)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:568)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
Caused by: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null
at java.util.ArrayList. (ArrayList.java:181)
at net.thucydides.core.model.DataTableRow.getValues (DataTableRow.java:27)
at net.thucydides.core.model.DataTable.addRowsTo (DataTable.java:277)
at net.thucydides.core.model.DataTable.renderTableBody (DataTable.java:262)
at net.thucydides.core.model.DataTable.lambda$toMarkdown$1 (DataTable.java:249)
at java.util.ArrayList.forEach (ArrayList.java:1511)
at net.thucydides.core.model.DataTable.toMarkdown (DataTable.java:246)
at net.thucydides.core.requirements.reports.ScenarioOutcomes.outcomeFrom (ScenarioOutcomes.java:65)
at net.thucydides.core.requirements.reports.ScenarioOutcomes.lambda$from$0 (ScenarioOutcomes.java:34)
at java.util.stream.ReferencePipeline$3$1.accept (ReferencePipeline.java:197)
at java.util.ArrayList$ArrayListSpliterator.forEachRemaining (ArrayList.java:1625)
at java.util.stream.AbstractPipeline.copyInto (AbstractPipeline.java:509)
at java.util.stream.AbstractPipeline.wrapAndCopyInto (AbstractPipeline.java:499)
at java.util.stream.ReduceOps$ReduceOp.evaluateSequential (ReduceOps.java:921)
at java.util.stream.AbstractPipeline.evaluate (AbstractPipeline.java:234)
at java.util.stream.ReferencePipeline.collect (ReferencePipeline.java:682)
at net.thucydides.core.requirements.reports.ScenarioOutcomes.from (ScenarioOutcomes.java:35)
at net.thucydides.core.reports.html.FreemarkerContext.getBuildContext (FreemarkerContext.java:159)
at net.thucydides.core.reports.html.TextSummaryReportTask.generateReports (TextSummaryReportTask.java:31)
at net.thucydides.core.reports.html.ReportExecutor.call (ReportExecutor.java:33)
at net.thucydides.core.reports.html.ReportExecutor.call (ReportExecutor.java:12)
at java.util.concurrent.FutureTask.run (FutureTask.java:264)
at java.util.concurrent.ThreadPoolExecutor.runWorker (ThreadPoolExecutor.java:1136)
at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:635)
at java.lang.Thread.run (Thread.java:833)
[WARNING] Failed to generate report for net.thucydides.core.reports.html.AggregateReportingTask@2a70c8d5 - java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null
java.base/java.util.ArrayList.(ArrayList.java:181)
java.util.concurrent.ExecutionException: java.lang.NullPointerException: Cannot invoke "java.util.Collection.toArray()" because "c" is null
at java.util.concurrent.FutureTask.report (FutureTask.java:122)
at java.util.concurrent.FutureTask.get (FutureTask.java:205)
at net.thucydides.core.reports.html.Reporter.generateReports (Reporter.java:56)
at net.thucydides.core.reports.html.Reporter.generateReportsFor (Reporter.java:32)
at net.thucydides.core.reports.html.HtmlAggregateStoryReporter.generateReportsForTestResultsIn (HtmlAggregateStoryReporter.java:222)
at net.thucydides.core.reports.html.HtmlAggregateStoryReporter.generateReportsForTestResultsFrom (HtmlAggregateStoryReporter.java:135)
at net.serenitybdd.maven.plugins.SerenityAggregatorMojo.generateHtmlStoryReports (SerenityAggregatorMojo.java:252)
at net.serenitybdd.maven.plugins.SerenityAggregatorMojo.execute (SerenityAggregatorMojo.java:195)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo (DefaultBuildPluginManager.java:137)
at org.apache.maven.lifecycle.internal.MojoExecutor.doExecute (MojoExecutor.java:301)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:211)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:165)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute (MojoExecutor.java:157)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:121)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject (LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build (SingleThreadedBuilder.java:56)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute (LifecycleStarter.java:127)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:294)
at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
at org.apache.maven.cli.MavenCli.execute (MavenCli.java:960)
at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:293)
at org.apache.maven.cli.MavenCli.main (MavenCli.java:196)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:77)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke (Method.java:568)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced (Launcher.java:282)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch (Launcher.java:225)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode (Launcher.java:406)
at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:347)
.
.
.
@cliviu
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cliviu commented Jul 17, 2022

hi @sumit12071988 , can you reproduce the problem?

@sumit12071988
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Author

Hi @cliviu , Please find the Steps to reproduce the issue:

  1. Create a java program using Serenity and JUnit5 which reads test data using csv file. add the csv file using @CsvFileSource annotation as shown below
class b_DataDrivenTestingUsingCSVTest {
    @Managed(driver = "chrome", options = "--headless")
    WebDriver driver;

    TwoInputFieldForm twoInputFieldForm;

    @ParameterizedTest(name = "First element: {0} | Second element: {1} | Summation Result: {2}")   // {x} is the value from I/P parameter it will fetch during each iteration
    @CsvFileSource(files = "src/test/resources/testdata/calculations.csv", numLinesToSkip = 1)
    void shouldCalculateTheCorrectTotal(String a, String b, String calculatedTotal){
        twoInputFieldForm.open();

        twoInputFieldForm.enterA(a);
        twoInputFieldForm.enterB(b);
        twoInputFieldForm.getTotal();

        assertThat(twoInputFieldForm.displayedTotal()).isEqualTo(calculatedTotal);
    }
}
  1. Run the program from command line using the maven command mvn clean verify
  2. Monitor the O/p. You may notice that the execution will be successful, but issue is only with report generation.

I'm attaching a snapshot as well as entire console log for reference. Do let me know should you need any more details

Error.log
Result1

@Muschke
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Muschke commented Nov 24, 2022

Have you figured out what this error means?

@HimanshuSingour
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Have you solve this error? i am also facing same

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4 participants
@cliviu @sumit12071988 @Muschke @HimanshuSingour