Prevent StringIndexOutOfBoundsException when generating field names

[labkey-tchad]

Rationale

java.lang.StringIndexOutOfBoundsException: begin 0, end 4, length 1
  at java.base/java.lang.String.checkBoundsBeginEnd(String.java:4602)
  at java.base/java.lang.String.substring(String.java:2705)
  at org.labkey.test.util.TestDataGenerator.randomFieldName(TestDataGenerator.java:586)
  at org.labkey.test.util.TestDataGenerator.randomFieldName(TestDataGenerator.java:568)
  at org.labkey.test.util.TestDataGenerator.randomFieldName(TestDataGenerator.java:563)
  at org.labkey.test.params.FieldInfo.random(FieldInfo.java:57)
  at org.labkey.test.params.FieldInfo.random(FieldInfo.java:65)
  at org.labkey.test.tests.SampleTypeNameExpressionTest.testSimpleNameExpression(SampleTypeNameExpressionTest.java:176)

Related Pull Requests

• Avoid generating fields names with reserved substitution format patterns #2537

Changes

• Prevent StringIndexOutOfBoundsException when generating field names