Fix flaky undertow test (#331)

pavolloffay · web-flow · commit cf0a537c0f84 · 2021-07-06T18:26:16.000+02:00
Signed-off-by: Pavol Loffay &lt;p.loffay@gmail.com&gt;
diff --git a/instrumentation/undertow/undertow-1.4/src/test/java/io/opentelemetry/javaagent/instrumentation/hypertrace/undertow/v1_4/UndertowInstrumentationTest.java b/instrumentation/undertow/undertow-1.4/src/test/java/io/opentelemetry/javaagent/instrumentation/hypertrace/undertow/v1_4/UndertowInstrumentationTest.java
@@ -108,8 +108,8 @@ void postUrlEncoded() throws InterruptedException, TimeoutException, IOException
       assertEquals(200, response.code());
     }
 
-    List<List<SpanData>> traces = TEST_WRITER.getTraces();
     TEST_WRITER.waitForTraces(1);
+    List<List<SpanData>> traces = TEST_WRITER.getTraces();
     Assertions.assertEquals(1, traces.size());
     List<SpanData> trace = traces.get(0);
     Assertions.assertEquals(1, trace.size());

Original file line number	Diff line number	Diff line change
`@@ -108,8 +108,8 @@ void postUrlEncoded() throws InterruptedException, TimeoutException, IOException`
`108`	`108`	`assertEquals(200, response.code());`
`109`	`109`	`}`
`110`	`110`
`111`		`- List<List<SpanData>> traces = TEST_WRITER.getTraces();`
`112`	`111`	`TEST_WRITER.waitForTraces(1);`
	`112`	`+ List<List<SpanData>> traces = TEST_WRITER.getTraces();`
`113`	`113`	`Assertions.assertEquals(1, traces.size());`
`114`	`114`	`List<SpanData> trace = traces.get(0);`
`115`	`115`	`Assertions.assertEquals(1, trace.size());`