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https://issues.apache.org/jira/browse/NIFI-1977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15392228#comment-15392228
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Puspendu Banerjee commented on NIFI-1977:
-----------------------------------------
As per documentation, validation should happen:
https://github.com/apache/nifi/blob/master/nifi-api/src/main/java/org/apache/nifi/components/PropertyDescriptor.java#L90
> Property descriptors without explicit validators are not recognized
> -------------------------------------------------------------------
>
> Key: NIFI-1977
> URL: https://issues.apache.org/jira/browse/NIFI-1977
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core Framework
> Affects Versions: 0.6.1
> Reporter: Andrew Grande
>
> Looks like a bug in a testing framework.
> I have a simple test case like this one:
> {code:java}
> @Test
> public void customHeader() {
> final TestRunner runner =
> TestRunners.newTestRunner(ParseCSVRecord.class);
> runner.setProperty(PROP_CUSTOM_HEADER, "Column 1,Column 2");
> runner.enqueue("row1col1,row1col2\nrow2col1, row2col2");
> runner.run();
> {code}
> When a property is declared without an explicit validator, the test runner
> fails complaining that Custom Header is not a supported property (yes, I've
> added it to the descriptors list).
> {code:java}
> public static final PropertyDescriptor PROP_CUSTOM_HEADER = new
> PropertyDescriptor.Builder()
> .name("Custom Header")
> .description("Use this header (delimited according to set rules) instead of
> auto-discovering it from schema")
> .required(false)
> .expressionLanguageSupported(true)
> .build();
> {code}
> The intent here is to not have a validator declared, but rather implement
> more complex logic in the customValidate() callback, but the test never gets
> to that point.
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