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gnodet pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/camel.git

commit df4753a158f7718093f20198e1d87afc99e855d3
Author: Guillaume Nodet <gno...@gmail.com>
AuthorDate: Tue Jun 9 10:22:42 2020 +0200

    [CAMEL-11807] Upgrade camel-util to junit5
---
 core/camel-util/pom.xml                            |  4 +-
 .../org/apache/camel/util/AntPathMatcherTest.java  |  9 +++--
 .../org/apache/camel/util/CamelURIParserTest.java  | 10 +++--
 .../apache/camel/util/CollectionHelperTest.java    |  8 ++--
 .../camel/util/CollectionStringBufferTest.java     |  8 ++--
 .../java/org/apache/camel/util/IOHelperTest.java   |  8 ++--
 .../java/org/apache/camel/util/OgnlHelperTest.java |  9 +++--
 .../apache/camel/util/OrderedPropertiesTest.java   |  7 ++--
 .../org/apache/camel/util/StringHelperTest.java    |  7 ++--
 .../java/org/apache/camel/util/URISupportTest.java | 18 ++++-----
 .../java/org/apache/camel/util/UnitUtilsTest.java  |  6 +--
 .../org/apache/camel/util/backoff/BackOffTest.java | 45 +++++++++++-----------
 .../camel/util/backoff/BackOffTimerTest.java       | 42 ++++++++++----------
 .../concurrent/AsyncCompletionServiceTest.java     | 17 ++++----
 .../SizedScheduledExecutorServiceTest.java         | 13 ++++---
 .../SubmitOrderedCompletionServiceTest.java        | 16 ++++----
 .../concurrent/SynchronousExecutorServiceTest.java | 12 +++---
 .../apache/camel/util/function/PredicatesTest.java | 17 ++++----
 18 files changed, 144 insertions(+), 112 deletions(-)

diff --git a/core/camel-util/pom.xml b/core/camel-util/pom.xml
index adf17f45..f3c3d5f 100644
--- a/core/camel-util/pom.xml
+++ b/core/camel-util/pom.xml
@@ -43,8 +43,8 @@
 
         <!-- testing -->
         <dependency>
-            <groupId>junit</groupId>
-            <artifactId>junit</artifactId>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
             <scope>test</scope>
         </dependency>
         <dependency>
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/AntPathMatcherTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/AntPathMatcherTest.java
index 3208c57..6a53144 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/AntPathMatcherTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/AntPathMatcherTest.java
@@ -16,13 +16,16 @@
  */
 package org.apache.camel.util;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 /**
  * Unit tests for {@link AntPathMatcher}.
  */
-public class AntPathMatcherTest extends Assert {
+public class AntPathMatcherTest {
 
     @Test
     public void test() {
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/CamelURIParserTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/CamelURIParserTest.java
index 922d4d5..72325b7 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/CamelURIParserTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/CamelURIParserTest.java
@@ -16,10 +16,14 @@
  */
 package org.apache.camel.util;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+
+
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNull;
 
 public class CamelURIParserTest {
 
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/CollectionHelperTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/CollectionHelperTest.java
index 668cf41..254be9d 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/CollectionHelperTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/CollectionHelperTest.java
@@ -24,10 +24,12 @@ import java.util.List;
 import java.util.Map;
 import java.util.Set;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class CollectionHelperTest extends Assert {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class CollectionHelperTest {
 
     @Test
     public void testCollectionAsCommaDelimitedString() {
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/CollectionStringBufferTest.java
 
b/core/camel-util/src/test/java/org/apache/camel/util/CollectionStringBufferTest.java
index 23395df..dd799db 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/CollectionStringBufferTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/CollectionStringBufferTest.java
@@ -16,10 +16,12 @@
  */
 package org.apache.camel.util;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class CollectionStringBufferTest extends Assert {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+
+public class CollectionStringBufferTest {
 
     @Test
     public void testCollectionStringBufferDefault() {
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/IOHelperTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/IOHelperTest.java
index 3395c1a..16d5394 100644
--- a/core/camel-util/src/test/java/org/apache/camel/util/IOHelperTest.java
+++ b/core/camel-util/src/test/java/org/apache/camel/util/IOHelperTest.java
@@ -16,10 +16,12 @@
  */
 package org.apache.camel.util;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class IOHelperTest extends Assert {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+
+public class IOHelperTest {
     @Test
     public void testLookupEnvironmentVariable() throws Exception {
         assertEquals("8081", 
IOHelper.lookupEnvironmentVariable("FOO_SERVICE_PORT"));
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/OgnlHelperTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/OgnlHelperTest.java
index 2329d3f..5727a50 100644
--- a/core/camel-util/src/test/java/org/apache/camel/util/OgnlHelperTest.java
+++ b/core/camel-util/src/test/java/org/apache/camel/util/OgnlHelperTest.java
@@ -18,10 +18,13 @@ package org.apache.camel.util;
 
 import java.util.List;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class OgnlHelperTest extends Assert {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class OgnlHelperTest {
 
     /**
      * Tests correct splitting in case the OGNL expression contains method 
parameters with brackets.
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/OrderedPropertiesTest.java
 
b/core/camel-util/src/test/java/org/apache/camel/util/OrderedPropertiesTest.java
index 8d80ffa..8e33a53 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/OrderedPropertiesTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/OrderedPropertiesTest.java
@@ -19,10 +19,11 @@ package org.apache.camel.util;
 import java.util.Iterator;
 import java.util.Properties;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class OrderedPropertiesTest extends Assert {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+public class OrderedPropertiesTest {
 
     @Test
     public void testOrdered() throws Exception {
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/StringHelperTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/StringHelperTest.java
index 688ac8f..cd07720 100644
--- a/core/camel-util/src/test/java/org/apache/camel/util/StringHelperTest.java
+++ b/core/camel-util/src/test/java/org/apache/camel/util/StringHelperTest.java
@@ -16,13 +16,12 @@
  */
 package org.apache.camel.util;
 
-import junit.framework.TestCase;
-
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import static org.apache.camel.util.StringHelper.camelCaseToDash;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class StringHelperTest extends TestCase {
+public class StringHelperTest {
 
     @Test
     public void testCamelCashToDash() throws Exception {
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/URISupportTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/URISupportTest.java
index 1837d0f..a86d84b 100644
--- a/core/camel-util/src/test/java/org/apache/camel/util/URISupportTest.java
+++ b/core/camel-util/src/test/java/org/apache/camel/util/URISupportTest.java
@@ -24,15 +24,15 @@ import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertNotNull;
-import static org.junit.Assert.assertNotSame;
-import static org.junit.Assert.assertTrue;
-import static org.junit.Assert.fail;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNotSame;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 
 public class URISupportTest {
 
@@ -103,8 +103,8 @@ public class URISupportTest {
         String out1 = URISupport.normalizeUri("http://www.google.com?q=Camel";);
         String out2 = URISupport.normalizeUri("http:www.google.com?q=Camel");
         assertEquals(out1, out2);
-        assertTrue("Should have //", out1.startsWith("http://";));
-        assertTrue("Should have //", out2.startsWith("http://";));
+        assertTrue(out1.startsWith("http://";), "Should have //");
+        assertTrue(out2.startsWith("http://";), "Should have //");
 
     }
 
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/UnitUtilsTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/UnitUtilsTest.java
index 617d8f2..9a73840 100644
--- a/core/camel-util/src/test/java/org/apache/camel/util/UnitUtilsTest.java
+++ b/core/camel-util/src/test/java/org/apache/camel/util/UnitUtilsTest.java
@@ -18,12 +18,12 @@ package org.apache.camel.util;
 
 import java.text.DecimalFormatSymbols;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import static org.apache.camel.util.UnitUtils.printUnitFromBytes;
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
-public class UnitUtilsTest extends Assert {
+public class UnitUtilsTest {
 
     @Test
     public void testPrintUnitFromBytes() throws Exception {
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/backoff/BackOffTest.java 
b/core/camel-util/src/test/java/org/apache/camel/util/backoff/BackOffTest.java
index e16d804..88946af 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/backoff/BackOffTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/backoff/BackOffTest.java
@@ -18,8 +18,9 @@ package org.apache.camel.util.backoff;
 
 import java.util.concurrent.TimeUnit;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class BackOffTest {
 
@@ -32,10 +33,10 @@ public class BackOffTest {
 
         for (int i = 1; i <= 5; i++) {
             delay = context.next();
-            Assert.assertEquals(i, context.getCurrentAttempts());
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis(), delay);
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis(), 
context.getCurrentDelay());
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis() * i, 
context.getCurrentElapsedTime());
+            assertEquals(i, context.getCurrentAttempts());
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis(), delay);
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis(), 
context.getCurrentDelay());
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis() * i, 
context.getCurrentElapsedTime());
         }
     }
 
@@ -53,10 +54,10 @@ public class BackOffTest {
             delay = context.next();
             elapsed += delay;
 
-            Assert.assertEquals(i, context.getCurrentAttempts());
-            Assert.assertEquals((long)(oldDelay * 1.5), delay);
-            Assert.assertEquals((long)(oldDelay * 1.5), 
context.getCurrentDelay());
-            Assert.assertEquals(elapsed, context.getCurrentElapsedTime(), 0);
+            assertEquals(i, context.getCurrentAttempts());
+            assertEquals((long)(oldDelay * 1.5), delay);
+            assertEquals((long)(oldDelay * 1.5), context.getCurrentDelay());
+            assertEquals(elapsed, context.getCurrentElapsedTime(), 0);
         }
     }
 
@@ -69,15 +70,15 @@ public class BackOffTest {
 
         for (int i = 1; i <= 5; i++) {
             delay = context.next();
-            Assert.assertEquals(i, context.getCurrentAttempts());
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis(), delay);
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis(), 
context.getCurrentDelay());
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis() * i, 
context.getCurrentElapsedTime());
+            assertEquals(i, context.getCurrentAttempts());
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis(), delay);
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis(), 
context.getCurrentDelay());
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis() * i, 
context.getCurrentElapsedTime());
         }
 
         delay = context.next();
-        Assert.assertEquals(6, context.getCurrentAttempts());
-        Assert.assertEquals(BackOff.NEVER, delay);
+        assertEquals(6, context.getCurrentAttempts());
+        assertEquals(BackOff.NEVER, delay);
     }
 
     @Test
@@ -89,14 +90,14 @@ public class BackOffTest {
 
         for (int i = 1; i <= 5; i++) {
             delay = context.next();
-            Assert.assertEquals(i, context.getCurrentAttempts());
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis(), delay);
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis(), 
context.getCurrentDelay());
-            Assert.assertEquals(BackOff.DEFAULT_DELAY.toMillis() * i, 
context.getCurrentElapsedTime());
+            assertEquals(i, context.getCurrentAttempts());
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis(), delay);
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis(), 
context.getCurrentDelay());
+            assertEquals(BackOff.DEFAULT_DELAY.toMillis() * i, 
context.getCurrentElapsedTime());
         }
 
         delay = context.next();
-        Assert.assertEquals(6, context.getCurrentAttempts());
-        Assert.assertEquals(BackOff.NEVER, delay);
+        assertEquals(6, context.getCurrentAttempts());
+        assertEquals(BackOff.NEVER, delay);
     }
 }
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/backoff/BackOffTimerTest.java
 
b/core/camel-util/src/test/java/org/apache/camel/util/backoff/BackOffTimerTest.java
index 1cb911c..1acf4c7 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/backoff/BackOffTimerTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/backoff/BackOffTimerTest.java
@@ -24,8 +24,10 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.concurrent.atomic.AtomicLong;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 public class BackOffTimerTest {
 
@@ -41,13 +43,13 @@ public class BackOffTimerTest {
         BackOffTimer.Task task = timer.schedule(
             backOff,
             context -> {
-                Assert.assertEquals(counter.incrementAndGet(), 
context.getCurrentAttempts());
-                Assert.assertEquals(100, context.getCurrentDelay());
-                Assert.assertEquals(100 * counter.get(), 
context.getCurrentElapsedTime());
+                assertEquals(counter.incrementAndGet(), 
context.getCurrentAttempts());
+                assertEquals(100, context.getCurrentDelay());
+                assertEquals(100 * counter.get(), 
context.getCurrentElapsedTime());
                 if (first.get() == 0) {
                     first.set(context.getFirstAttemptTime());
                 } else {
-                    Assert.assertEquals(first.get(), 
context.getFirstAttemptTime());
+                    assertEquals(first.get(), context.getFirstAttemptTime());
                 }
 
                 return counter.get() < 5;
@@ -56,7 +58,7 @@ public class BackOffTimerTest {
 
         task.whenComplete(
             (context, throwable) -> {
-                Assert.assertEquals(5, counter.get());
+                assertEquals(5, counter.get());
                 latch.countDown();
             }
         );
@@ -76,9 +78,9 @@ public class BackOffTimerTest {
         BackOffTimer.Task task = timer.schedule(
             backOff,
             context -> {
-                Assert.assertEquals(counter.incrementAndGet(), 
context.getCurrentAttempts());
-                Assert.assertEquals(100, context.getCurrentDelay());
-                Assert.assertEquals(100 * counter.get(), 
context.getCurrentElapsedTime());
+                assertEquals(counter.incrementAndGet(), 
context.getCurrentAttempts());
+                assertEquals(100, context.getCurrentDelay());
+                assertEquals(100 * counter.get(), 
context.getCurrentElapsedTime());
 
                 return true;
             }
@@ -86,8 +88,8 @@ public class BackOffTimerTest {
 
         task.whenComplete(
             (context, throwable) -> {
-                Assert.assertEquals(5, counter.get());
-                Assert.assertEquals(BackOffTimer.Task.Status.Exhausted, 
context.getStatus());
+                assertEquals(5, counter.get());
+                assertEquals(BackOffTimer.Task.Status.Exhausted, 
context.getStatus());
                 latch.countDown();
             }
         );
@@ -107,9 +109,9 @@ public class BackOffTimerTest {
         BackOffTimer.Task task = timer.schedule(
             backOff,
             context -> {
-                Assert.assertEquals(counter.incrementAndGet(), 
context.getCurrentAttempts());
-                Assert.assertEquals(100, context.getCurrentDelay());
-                Assert.assertEquals(100 * counter.get(), 
context.getCurrentElapsedTime());
+                assertEquals(counter.incrementAndGet(), 
context.getCurrentAttempts());
+                assertEquals(100, context.getCurrentDelay());
+                assertEquals(100 * counter.get(), 
context.getCurrentElapsedTime());
 
                 return true;
             }
@@ -117,8 +119,8 @@ public class BackOffTimerTest {
 
         task.whenComplete(
             (context, throwable) -> {
-                Assert.assertTrue(counter.get() <= 5);
-                Assert.assertEquals(BackOffTimer.Task.Status.Exhausted, 
context.getStatus());
+                assertTrue(counter.get() <= 5);
+                assertEquals(BackOffTimer.Task.Status.Exhausted, 
context.getStatus());
                 latch.countDown();
             }
         );
@@ -138,7 +140,7 @@ public class BackOffTimerTest {
         BackOffTimer.Task task = timer.schedule(
             backOff,
             context -> {
-                Assert.assertEquals(BackOffTimer.Task.Status.Active, 
context.getStatus());
+                assertEquals(BackOffTimer.Task.Status.Active, 
context.getStatus());
 
                 latch.countDown();
 
@@ -148,14 +150,14 @@ public class BackOffTimerTest {
 
         task.whenComplete(
             (context, throwable) -> {
-                Assert.assertEquals(BackOffTimer.Task.Status.Inactive, 
context.getStatus());
+                assertEquals(BackOffTimer.Task.Status.Inactive, 
context.getStatus());
                 done.set(true);
             }
         );
 
         latch.await(2, TimeUnit.SECONDS);
         task.cancel();
-        Assert.assertTrue(done.get());
+        assertTrue(done.get());
 
         executor.shutdownNow();
     }
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/concurrent/AsyncCompletionServiceTest.java
 
b/core/camel-util/src/test/java/org/apache/camel/util/concurrent/AsyncCompletionServiceTest.java
index 2d5cdd9..eb3bb7f 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/concurrent/AsyncCompletionServiceTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/concurrent/AsyncCompletionServiceTest.java
@@ -22,23 +22,26 @@ import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 import java.util.function.Consumer;
 
-import org.junit.After;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-public class AsyncCompletionServiceTest extends Assert {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+
+public class AsyncCompletionServiceTest {
 
     private ExecutorService executor;
     private AsyncCompletionService<Object> service;
 
-    @Before
+    @BeforeEach
     public void setUp() throws Exception {
         executor = Executors.newFixedThreadPool(5);
         service = new AsyncCompletionService<>(executor, true);
     }
 
-    @After
+    @AfterEach
     public void tearDown() throws Exception {
         executor.shutdownNow();
     }
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SizedScheduledExecutorServiceTest.java
 
b/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SizedScheduledExecutorServiceTest.java
index 0cc0ebb..94bf9c7 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SizedScheduledExecutorServiceTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SizedScheduledExecutorServiceTest.java
@@ -20,13 +20,16 @@ import java.util.concurrent.RejectedExecutionException;
 import java.util.concurrent.ScheduledThreadPoolExecutor;
 import java.util.concurrent.TimeUnit;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+import static org.junit.jupiter.api.Assertions.fail;
 
 /**
  *
  */
-public class SizedScheduledExecutorServiceTest extends Assert {
+public class SizedScheduledExecutorServiceTest {
     
     @Test
     public void testSizedScheduledExecutorService() throws Exception {
@@ -52,7 +55,7 @@ public class SizedScheduledExecutorServiceTest extends Assert 
{
         }
 
         sized.shutdownNow();
-        assertTrue("Should be shutdown", sized.isShutdown() || 
sized.isTerminating());
-        assertTrue("Should be shutdown", delegate.isShutdown() || 
sized.isTerminating());
+        assertTrue(sized.isShutdown() || sized.isTerminating(), "Should be 
shutdown");
+        assertTrue(delegate.isShutdown() || sized.isTerminating(), "Should be 
shutdown");
     }
 }
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SubmitOrderedCompletionServiceTest.java
 
b/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SubmitOrderedCompletionServiceTest.java
index 19e24e5..55a6631 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SubmitOrderedCompletionServiceTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SubmitOrderedCompletionServiceTest.java
@@ -22,23 +22,25 @@ import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
 import java.util.concurrent.TimeUnit;
 
-import org.junit.After;
-import org.junit.Assert;
-import org.junit.Before;
-import org.junit.Test;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 
-public class SubmitOrderedCompletionServiceTest extends Assert {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
+public class SubmitOrderedCompletionServiceTest {
 
     private ExecutorService executor;
     private SubmitOrderedCompletionService<Object> service;
 
-    @Before
+    @BeforeEach
     public void setUp() throws Exception {
         executor = Executors.newFixedThreadPool(5);
         service = new SubmitOrderedCompletionService<>(executor);
     }
 
-    @After
+    @AfterEach
     public void tearDown() throws Exception {
         executor.shutdownNow();
     }
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SynchronousExecutorServiceTest.java
 
b/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SynchronousExecutorServiceTest.java
index 1ca2ec4..b9c811d 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SynchronousExecutorServiceTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/concurrent/SynchronousExecutorServiceTest.java
@@ -18,10 +18,12 @@ package org.apache.camel.util.concurrent;
 
 import java.util.concurrent.ExecutorService;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
-public class SynchronousExecutorServiceTest extends Assert {
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+public class SynchronousExecutorServiceTest {
 
     private static boolean invoked;
     private static String name1;
@@ -39,8 +41,8 @@ public class SynchronousExecutorServiceTest extends Assert {
             }
         });
 
-        assertTrue("Should have been invoked", invoked);
-        assertEquals("Should use same thread", name1, name2);
+        assertTrue(invoked, "Should have been invoked");
+        assertEquals(name1, name2, "Should use same thread");
     }
 
     @Test
diff --git 
a/core/camel-util/src/test/java/org/apache/camel/util/function/PredicatesTest.java
 
b/core/camel-util/src/test/java/org/apache/camel/util/function/PredicatesTest.java
index 7df4478..5a707bc 100644
--- 
a/core/camel-util/src/test/java/org/apache/camel/util/function/PredicatesTest.java
+++ 
b/core/camel-util/src/test/java/org/apache/camel/util/function/PredicatesTest.java
@@ -16,17 +16,20 @@
  */
 package org.apache.camel.util.function;
 
-import org.junit.Assert;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
 
 public class PredicatesTest {
 
     @Test
     public void testNegate() {
-        Assert.assertFalse(Predicates.of(String::isEmpty).test("something"));
-        
Assert.assertTrue(Predicates.of(String::isEmpty).negate().test("something"));
-        
Assert.assertTrue(Predicates.negate(String::isEmpty).test("something"));
-        Assert.assertFalse(Predicates.negate(String::isEmpty).test(""));
-        Assert.assertFalse(Predicates.of(String::isEmpty).negate().test(""));
+        assertFalse(Predicates.of(String::isEmpty).test("something"));
+        assertTrue(Predicates.of(String::isEmpty).negate().test("something"));
+        assertTrue(Predicates.negate(String::isEmpty).test("something"));
+        assertFalse(Predicates.negate(String::isEmpty).test(""));
+        assertFalse(Predicates.of(String::isEmpty).negate().test(""));
     }
 }

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