skytin1004 commented on code in PR #7767:
URL: https://github.com/apache/iceberg/pull/7767#discussion_r1219413775


##########
core/src/test/java/org/apache/iceberg/io/TestByteBufferInputStreams.java:
##########
@@ -506,7 +562,8 @@ public void testMarkDoubleReset() throws Exception {
     ByteBufferInputStream stream = newStream();
 
     stream.mark(5);
-    Assert.assertEquals("Should read 5 bytes", 5, stream.read(new byte[5]));
+

Review Comment:
   I deleted the unnecessary newline.
   



##########
core/src/test/java/org/apache/iceberg/catalog/CatalogTests.java:
##########
@@ -168,70 +166,71 @@ protected boolean supportsNamesWithSlashes() {
   public void testCreateNamespace() {
     C catalog = catalog();
 
-    Assert.assertFalse("Namespace should not exist", 
catalog.namespaceExists(NS));
+    Assertions.assertThat(catalog.namespaceExists(NS)).as("Namespace should 
not exist").isFalse();
 
     catalog.createNamespace(NS);
-    Assert.assertTrue(
-        "Catalog should have the created namespace", 
catalog.listNamespaces().contains(NS));
-    Assert.assertTrue("Namespace should exist", catalog.namespaceExists(NS));
+    Assertions.assertThat(catalog.listNamespaces())
+        .as("Catalog should have the created namespace")
+        .contains(NS);
+    Assertions.assertThat(catalog.namespaceExists(NS)).as("Namespace should 
exist").isTrue();
   }
 
   @Test
   public void testCreateExistingNamespace() {
     C catalog = catalog();
 
-    Assert.assertFalse("Namespace should not exist", 
catalog.namespaceExists(NS));
+    Assertions.assertThat(catalog.namespaceExists(NS)).as("Namespace should 
not exist").isFalse();
 
     catalog.createNamespace(NS);
-    Assert.assertTrue("Namespace should exist", catalog.namespaceExists(NS));
+    Assertions.assertThat(catalog.namespaceExists(NS)).as("Namespace should 
exist").isTrue();
 
     Assertions.assertThatThrownBy(() -> catalog.createNamespace(NS))
         .isInstanceOf(AlreadyExistsException.class)
         .hasMessageContaining("Namespace already exists");
 
-    Assert.assertTrue("Namespace should still exist", 
catalog.namespaceExists(NS));
+    Assertions.assertThat(catalog.namespaceExists(NS)).as("Namespace should 
still exist").isTrue();
   }
 
   @Test
   public void testCreateNamespaceWithProperties() {
-    Assume.assumeTrue(supportsNamespaceProperties());
+    Assumptions.assumeTrue(supportsNamespaceProperties());
 
     C catalog = catalog();
 
-    Assert.assertFalse("Namespace should not exist", 
catalog.namespaceExists(NS));
+    Assertions.assertThat(catalog.namespaceExists(NS)).as("Namespace should 
not exist").isFalse();
 
     Map<String, String> createProps = ImmutableMap.of("prop", "val");
     catalog.createNamespace(NS, createProps);
-    Assert.assertTrue("Namespace should exist", catalog.namespaceExists(NS));
+

Review Comment:
   I deleted the unnecessary newline.



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