(flink) branch master updated: [FLINK-38982][test] Migrate the JUnit5 for ClassLoaderUtilsTest of flink-core module (#27477)

[panyuepeng]

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


The following commit(s) were added to refs/heads/master by this push:
     new 6c75724aa4d [FLINK-38982][test] Migrate the JUnit5 for 
ClassLoaderUtilsTest of flink-core module (#27477)
6c75724aa4d is described below

commit 6c75724aa4dc3667e01d1d18e6bc8c6f19a4b4c0
Author: Yuepeng Pan <panyuep...@apache.org>
AuthorDate: Thu Jan 29 09:47:45 2026 +0800

    [FLINK-38982][test] Migrate the JUnit5 for ClassLoaderUtilsTest of 
flink-core module (#27477)
---
 .../flink/testutils/ClassLoaderUtilsTest.java      | 26 ++++++++++------------
 1 file changed, 12 insertions(+), 14 deletions(-)

diff --git 
a/flink-core/src/test/java/org/apache/flink/testutils/ClassLoaderUtilsTest.java 
b/flink-core/src/test/java/org/apache/flink/testutils/ClassLoaderUtilsTest.java
index 8e752a89645..a869f6cc764 100644
--- 
a/flink-core/src/test/java/org/apache/flink/testutils/ClassLoaderUtilsTest.java
+++ 
b/flink-core/src/test/java/org/apache/flink/testutils/ClassLoaderUtilsTest.java
@@ -18,37 +18,36 @@
 
 package org.apache.flink.testutils;
 
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 import java.util.function.Supplier;
 
-import static org.junit.Assert.assertEquals;
-import static org.junit.Assert.assertNotEquals;
-import static org.junit.Assert.fail;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.fail;
 
 /** Tests for the {@link ClassLoaderUtils}. */
-public class ClassLoaderUtilsTest {
+class ClassLoaderUtilsTest {
 
     @Test
-    public void testObjectFromNewClassLoaderObject() throws Exception {
+    void testObjectFromNewClassLoaderObject() {
         testObjectFromNewClassLoaderObject(
                 ClassLoaderUtils::createSerializableObjectFromNewClassLoader);
     }
 
     @Test
-    public void testObjectFromNewClassLoaderClassLoaders() throws Exception {
+    void testObjectFromNewClassLoaderClassLoaders() {
         testObjectFromNewClassLoaderClassLoaders(
                 ClassLoaderUtils::createSerializableObjectFromNewClassLoader);
     }
 
     @Test
-    public void testExceptionObjectFromNewClassLoaderObject() throws Exception 
{
+    void testExceptionObjectFromNewClassLoaderObject() {
         testObjectFromNewClassLoaderObject(
                 ClassLoaderUtils::createExceptionObjectFromNewClassLoader);
     }
 
     @Test
-    public void testExceptionObjectFromNewClassLoaderClassLoaders() throws 
Exception {
+    void testExceptionObjectFromNewClassLoaderClassLoaders() {
         testObjectFromNewClassLoaderClassLoaders(
                 ClassLoaderUtils::createExceptionObjectFromNewClassLoader);
     }
@@ -58,7 +57,7 @@ public class ClassLoaderUtilsTest {
         final ClassLoaderUtils.ObjectAndClassLoader<X> objectAndClassLoader = 
supplier.get();
         final Object o = objectAndClassLoader.getObject();
 
-        assertNotEquals(ClassLoader.getSystemClassLoader(), 
o.getClass().getClassLoader());
+        
assertThat(ClassLoader.getSystemClassLoader()).isNotEqualTo(o.getClass().getClassLoader());
 
         try {
             Class.forName(o.getClass().getName());
@@ -71,9 +70,8 @@ public class ClassLoaderUtilsTest {
             Supplier<ClassLoaderUtils.ObjectAndClassLoader<X>> supplier) {
         final ClassLoaderUtils.ObjectAndClassLoader<X> objectAndClassLoader = 
supplier.get();
 
-        assertNotEquals(ClassLoader.getSystemClassLoader(), 
objectAndClassLoader.getClassLoader());
-        assertEquals(
-                ClassLoader.getSystemClassLoader(),
-                objectAndClassLoader.getClassLoader().getParent());
+        assertThat(ClassLoader.getSystemClassLoader())
+                .isNotEqualTo(objectAndClassLoader.getClassLoader())
+                .isEqualTo(objectAndClassLoader.getClassLoader().getParent());
     }
 }