nastra commented on code in PR #7895:
URL: https://github.com/apache/iceberg/pull/7895#discussion_r1254176431


##########
core/src/test/java/org/apache/iceberg/util/TestJsonUtil.java:
##########
@@ -18,247 +18,202 @@
  */
 package org.apache.iceberg.util;
 
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
 import com.fasterxml.jackson.core.JsonProcessingException;
 import java.nio.ByteBuffer;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap;
 import org.apache.iceberg.relocated.com.google.common.io.BaseEncoding;
-import org.assertj.core.api.Assertions;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public class TestJsonUtil {
 
   @Test
   public void get() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.get("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.get("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing field: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.get("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.get("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing field: x");
 
-    Assertions.assertThat(JsonUtil.get("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")).asText())
+    assertThat(JsonUtil.get("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")).asText())
         .isEqualTo("23");
   }
 
   @Test
   public void getInt() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing int: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getInt("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: null");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getInt("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
+    assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getInt("x", JsonUtil.mapper().readTree("{\"x\": 
23.0}")))
+    assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{\"x\": 23.0}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: 23.0");
 
-    Assertions.assertThat(JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
-        .isEqualTo(23);
+    assertThat(JsonUtil.getInt("x", JsonUtil.mapper().readTree("{\"x\": 
23}"))).isEqualTo(23);
   }
 
   @Test
   public void getIntOrNull() throws JsonProcessingException {
-    Assertions.assertThat(JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
-    Assertions.assertThat(JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
-        .isEqualTo(23);
-    Assertions.assertThat(JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
-        .isNull();
+    assertThat(JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
+    assertThat(JsonUtil.getIntOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
23}"))).isEqualTo(23);
+    assertThat(JsonUtil.getIntOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
null}"))).isNull();
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23.0}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: 23.0");
   }
 
   @Test
   public void getLong() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing long: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getLong("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: null");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getLong("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
+    assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getLong("x", JsonUtil.mapper().readTree("{\"x\": 
23.0}")))
+    assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{\"x\": 23.0}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: 23.0");
 
-    Assertions.assertThat(JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
-        .isEqualTo(23);
+    assertThat(JsonUtil.getLong("x", JsonUtil.mapper().readTree("{\"x\": 
23}"))).isEqualTo(23);
   }
 
   @Test
   public void getLongOrNull() throws JsonProcessingException {
-    Assertions.assertThat(JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
-    Assertions.assertThat(JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
+    assertThat(JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
+    assertThat(JsonUtil.getLongOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
23}")))
         .isEqualTo(23);
-    Assertions.assertThat(JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
-        .isNull();
+    assertThat(JsonUtil.getLongOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
null}"))).isNull();
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23.0}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: 23.0");
   }
 
   @Test
   public void getString() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing string: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getString("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a string value: x: null");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getString("x", JsonUtil.mapper().readTree("{\"x\": 
23}")))
+    assertThatThrownBy(() -> JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a string value: x: 23");
 
-    Assertions.assertThat(JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
+    assertThat(JsonUtil.getString("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
         .isEqualTo("23");
   }
 
   @Test
   public void getStringOrNull() throws JsonProcessingException {
-    Assertions.assertThat(JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
-    Assertions.assertThat(
-            JsonUtil.getStringOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
+    assertThat(JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
+    assertThat(JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isEqualTo("23");
-    Assertions.assertThat(
-            JsonUtil.getStringOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
-        .isNull();
+    assertThat(JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}"))).isNull();
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a string value: x: 23");
   }
 
   @Test
   public void getByteBufferOrNull() throws JsonProcessingException {
-    Assertions.assertThat(JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{}")))
-        .isNull();
-    Assertions.assertThat(
-            JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
+    assertThat(JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
+    assertThat(JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isNull();
 
     byte[] bytes = new byte[] {1, 2, 3, 4};
     String base16Str = BaseEncoding.base16().encode(bytes);
     String json = String.format("{\"x\": \"%s\"}", base16Str);
     ByteBuffer byteBuffer = JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree(json));
-    Assertions.assertThat(byteBuffer.array()).isEqualTo(bytes);
+    assertThat(byteBuffer.array()).isEqualTo(bytes);
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse byte buffer from non-text value: x: 23");
   }
 
   @Test
   public void getBool() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing boolean: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getBool("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a boolean value: x: null");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getBool("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
+    assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a boolean value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getBool("x", JsonUtil.mapper().readTree("{\"x\": 
\"true\"}")))
+    assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": \"true\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a boolean value: x: \"true\"");
 
-    Assertions.assertThat(JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": true}")))
-        .isTrue();
-    Assertions.assertThat(JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": false}")))
-        .isFalse();
-  }
-
-  @Test
-  public void getIntArrayOrNull() throws JsonProcessingException {

Review Comment:
   this also needs to be reverted. In fact, can you please revert all changes 
to this file. I believe the only change that this file requires is switching 
from `org.junit.Test` to `org.junit.jupiter.api.Test` (everything else just 
adds too much visual noise



##########
core/src/test/java/org/apache/iceberg/util/TestJsonUtil.java:
##########
@@ -18,247 +18,202 @@
  */
 package org.apache.iceberg.util;
 
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
 import com.fasterxml.jackson.core.JsonProcessingException;
 import java.nio.ByteBuffer;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
 import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap;
 import org.apache.iceberg.relocated.com.google.common.io.BaseEncoding;
-import org.assertj.core.api.Assertions;
-import org.junit.Test;
+import org.junit.jupiter.api.Test;
 
 public class TestJsonUtil {
 
   @Test
   public void get() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.get("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.get("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing field: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.get("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.get("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing field: x");
 
-    Assertions.assertThat(JsonUtil.get("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")).asText())
+    assertThat(JsonUtil.get("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")).asText())
         .isEqualTo("23");
   }
 
   @Test
   public void getInt() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing int: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getInt("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: null");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getInt("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
+    assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getInt("x", JsonUtil.mapper().readTree("{\"x\": 
23.0}")))
+    assertThatThrownBy(() -> JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{\"x\": 23.0}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: 23.0");
 
-    Assertions.assertThat(JsonUtil.getInt("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
-        .isEqualTo(23);
+    assertThat(JsonUtil.getInt("x", JsonUtil.mapper().readTree("{\"x\": 
23}"))).isEqualTo(23);
   }
 
   @Test
   public void getIntOrNull() throws JsonProcessingException {
-    Assertions.assertThat(JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
-    Assertions.assertThat(JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
-        .isEqualTo(23);
-    Assertions.assertThat(JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
-        .isNull();
+    assertThat(JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
+    assertThat(JsonUtil.getIntOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
23}"))).isEqualTo(23);
+    assertThat(JsonUtil.getIntOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
null}"))).isNull();
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getIntOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23.0}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to an integer value: x: 23.0");
   }
 
   @Test
   public void getLong() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing long: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getLong("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: null");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getLong("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
+    assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getLong("x", JsonUtil.mapper().readTree("{\"x\": 
23.0}")))
+    assertThatThrownBy(() -> JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{\"x\": 23.0}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: 23.0");
 
-    Assertions.assertThat(JsonUtil.getLong("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
-        .isEqualTo(23);
+    assertThat(JsonUtil.getLong("x", JsonUtil.mapper().readTree("{\"x\": 
23}"))).isEqualTo(23);
   }
 
   @Test
   public void getLongOrNull() throws JsonProcessingException {
-    Assertions.assertThat(JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
-    Assertions.assertThat(JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
+    assertThat(JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
+    assertThat(JsonUtil.getLongOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
23}")))
         .isEqualTo(23);
-    Assertions.assertThat(JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
-        .isNull();
+    assertThat(JsonUtil.getLongOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
null}"))).isNull();
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getLongOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23.0}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a long value: x: 23.0");
   }
 
   @Test
   public void getString() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing string: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getString("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a string value: x: null");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getString("x", JsonUtil.mapper().readTree("{\"x\": 
23}")))
+    assertThatThrownBy(() -> JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a string value: x: 23");
 
-    Assertions.assertThat(JsonUtil.getString("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
+    assertThat(JsonUtil.getString("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
         .isEqualTo("23");
   }
 
   @Test
   public void getStringOrNull() throws JsonProcessingException {
-    Assertions.assertThat(JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
-    Assertions.assertThat(
-            JsonUtil.getStringOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
+    assertThat(JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
+    assertThat(JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isEqualTo("23");
-    Assertions.assertThat(
-            JsonUtil.getStringOrNull("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
-        .isNull();
+    assertThat(JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}"))).isNull();
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getStringOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a string value: x: 23");
   }
 
   @Test
   public void getByteBufferOrNull() throws JsonProcessingException {
-    Assertions.assertThat(JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{}")))
-        .isNull();
-    Assertions.assertThat(
-            JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
+    assertThat(JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{}"))).isNull();
+    assertThat(JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isNull();
 
     byte[] bytes = new byte[] {1, 2, 3, 4};
     String base16Str = BaseEncoding.base16().encode(bytes);
     String json = String.format("{\"x\": \"%s\"}", base16Str);
     ByteBuffer byteBuffer = JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree(json));
-    Assertions.assertThat(byteBuffer.array()).isEqualTo(bytes);
+    assertThat(byteBuffer.array()).isEqualTo(bytes);
 
-    Assertions.assertThatThrownBy(
+    assertThatThrownBy(
             () -> JsonUtil.getByteBufferOrNull("x", 
JsonUtil.mapper().readTree("{\"x\": 23}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse byte buffer from non-text value: x: 23");
   }
 
   @Test
   public void getBool() throws JsonProcessingException {
-    Assertions.assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{}")))
+    assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse missing boolean: x");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getBool("x", JsonUtil.mapper().readTree("{\"x\": 
null}")))
+    assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": null}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a boolean value: x: null");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getBool("x", JsonUtil.mapper().readTree("{\"x\": 
\"23\"}")))
+    assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": \"23\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a boolean value: x: \"23\"");
 
-    Assertions.assertThatThrownBy(
-            () -> JsonUtil.getBool("x", JsonUtil.mapper().readTree("{\"x\": 
\"true\"}")))
+    assertThatThrownBy(() -> JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": \"true\"}")))
         .isInstanceOf(IllegalArgumentException.class)
         .hasMessage("Cannot parse to a boolean value: x: \"true\"");
 
-    Assertions.assertThat(JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": true}")))
-        .isTrue();
-    Assertions.assertThat(JsonUtil.getBool("x", 
JsonUtil.mapper().readTree("{\"x\": false}")))
-        .isFalse();
-  }
-
-  @Test
-  public void getIntArrayOrNull() throws JsonProcessingException {

Review Comment:
   this also needs to be reverted. In fact, can you please revert all changes 
to this file. I believe the only change that this file requires is switching 
from `org.junit.Test` to `org.junit.jupiter.api.Test` (everything else just 
adds too much visual noise)



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