AVRO-3350 Validate default enum value exists before returning.

[KyleSchoonover]

Current implementation could return a KeyNotFoundException

Jira

• My PR addresses the following Avro Jira issues and references them in the PR title. For example, "AVRO-1234: My Avro PR"
  • https://issues.apache.org/jira/browse/AVRO-3350

Tests

• My PR adds the following unit tests: Added additional enum unit tests and string validation

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  1. Subject is separated from body by a blank line
  2. Subject is limited to 50 characters (not including Jira issue reference)
  3. Subject does not end with a period
  4. Subject uses the imperative mood ("add", not "adding")
  5. Body wraps at 72 characters
  6. Body explains "what" and "why", not "how"

Documentation

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  • All the public functions and the classes in the PR contain Javadoc that explain what it does

[martin-g]

Thank you, @KyleSchoonover !