@Table formatter does not work with a List that is empty

[nikowitt]

Hi,

@Test
public void emptyJGivenTable() {
	given().create_table(Collections.emptyList());
}

static class TestStage extends Stage<TestStage>  {

	public TestStage create_table(@Table List l) {
		return self();
	}
}

results in an exception:

java.lang.IndexOutOfBoundsException: Index: 0, Size: 0

	at java.util.ArrayList.rangeCheck(ArrayList.java:657)
	at java.util.ArrayList.get(ArrayList.java:433)
	at com.tngtech.jgiven.report.text.PlainTextTableWriter.getColumnSpecs(PlainTextTableWriter.java:114)
	at com.tngtech.jgiven.report.text.PlainTextTableWriter.writeDataTable(PlainTextTableWriter.java:31)
	at com.tngtech.jgiven.report.text.PlainTextScenarioWriter.printDataTable(PlainTextScenarioWriter.java:178)
	at com.tngtech.jgiven.report.text.PlainTextScenarioWriter.printStep(PlainTextScenarioWriter.java:139)
	at com.tngtech.jgiven.report.text.PlainTextScenarioWriter.visit(PlainTextScenarioWriter.java:93)
	at com.tngtech.jgiven.report.model.StepModel.accept(StepModel.java:77)
	at com.tngtech.jgiven.report.model.ScenarioCaseModel.accept(ScenarioCaseModel.java:73)
	at com.tngtech.jgiven.report.model.ScenarioModel.accept(ScenarioModel.java:28)
	at com.tngtech.jgiven.report.text.PlainTextReporter.visit(PlainTextReporter.java:68)
	at com.tngtech.jgiven.report.model.ScenarioModel.accept(ScenarioModel.java:26)
	at com.tngtech.jgiven.report.model.ReportModel.accept(ReportModel.java:45)
	at com.tngtech.jgiven.report.text.PlainTextReporter.write(PlainTextReporter.java:51)
	at com.tngtech.jgiven.report.impl.CommonReportHelper.finishReport(CommonReportHelper.java:30)
	at com.tngtech.jgiven.junit.JGivenClassRule.finished(JGivenClassRule.java:22)
	at org.junit.rules.TestWatcher.finishedQuietly(TestWatcher.java:117)
	at org.junit.rules.TestWatcher.access$400(TestWatcher.java:46)
	at org.junit.rules.TestWatcher$1.evaluate(TestWatcher.java:64)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:193)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)

Using additional attributes on @table might cause different exceptions, but I assume the root cause is the same.

Best regards,
Niko

[janschaefer]

Thanks for the report!

[janschaefer]

What would be your expected behavior? Should the report contain nothing or should a more meaningful exception be thrown?

[janschaefer]

I fixed it now to just show nothing.