[CAMEL-15708] loopDoWhile with delay does not see end of loop

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Bug
• Affects Version/s: 3.5.0
• Fix Version/s: 3.7.0
• Component/s: camel-core
• Estimated Complexity: Unknown
• Assignee: Claus Ibsen
• Reporter: Alexander Kizchenko
• Created: 19/Oct/20 17:52
• Updated: 20/Oct/20 09:31
• Resolved: 20/Oct/20 09:31

Description

"LoopDoWhile" with "delay" in the body of the loop does not see the "end" and calls steps after the "end" during each iteration.
How to reproduce:
In the test of org.apache.camel.processor.LoopDoWhileTest add "delay" into the route configuration

@Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from("direct:simple").loopDoWhile(simple("${body.length} <= 5"))                        
                        .to("mock:loop")
                        .transform(body().append("A"))
                        .delay(1000).asyncDelayed()
                        .end().to("mock:result");

                from("direct:functional").loopDoWhile().body(String.class, b -> b.length() <= 5)
                        .delay(1000).syncDelayed()
                        .to("mock:loop").transform()
                        .body(String.class, b -> b += "A").end()
                        .to("mock:result");
            }
        };
    }

After that both tests will fall

java.lang.AssertionError: mock://result Body of message: 0. Expected: <AAAAAA> but was: <AA>
Expected :<AAAAAA>
Actual   :<AA>
<Click to see difference>

The syncDelayed or asyncDelayed options does not affect the result.