(iceberg) branch main updated: Test: Add tests for NaNUtil (#16834)

[pv...@apache.org]

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pvary pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/iceberg.git


The following commit(s) were added to refs/heads/main by this push:
     new 0789a66f2a Test: Add tests for NaNUtil (#16834)
0789a66f2a is described below

commit 0789a66f2a03ddc6cc5830a7d6eb8760c6a4c8aa
Author: vishnu prakash <nv...@gmail.com>
AuthorDate: Tue Jul 28 13:43:56 2026 +0530

    Test: Add tests for NaNUtil (#16834)
---
 .../java/org/apache/iceberg/util/TestNaNUtil.java  | 59 ++++++++++++++++++++++
 1 file changed, 59 insertions(+)

diff --git a/api/src/test/java/org/apache/iceberg/util/TestNaNUtil.java b/api/src/test/java/org/apache/iceberg/util/TestNaNUtil.java
new file mode 100644
index 0000000000..3d17e1640e
--- /dev/null
+++ b/api/src/test/java/org/apache/iceberg/util/TestNaNUtil.java
@@ -0,0 +1,59 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.apache.iceberg.util;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.Test;
+
+class TestNaNUtil {
+  @Test
+  void doubleNaN() {
+    assertThat(NaNUtil.isNaN(Double.NaN)).isTrue();
+  }
+
+  @Test
+  void floatNaN() {
+    assertThat(NaNUtil.isNaN(Float.NaN)).isTrue();
+  }
+
+  @Test
+  void doubleNonNaN() {
+    assertThat(NaNUtil.isNaN(1.0d)).isFalse();
+    assertThat(NaNUtil.isNaN(-0.0d)).isFalse();
+    assertThat(NaNUtil.isNaN(Double.POSITIVE_INFINITY)).isFalse();
+    assertThat(NaNUtil.isNaN(Double.NEGATIVE_INFINITY)).isFalse();
+  }
+
+  @Test
+  void floatNonNaN() {
+    assertThat(NaNUtil.isNaN(1.0f)).isFalse();
+    assertThat(NaNUtil.isNaN(-0.0f)).isFalse();
+    assertThat(NaNUtil.isNaN(Float.POSITIVE_INFINITY)).isFalse();
+    assertThat(NaNUtil.isNaN(Float.NEGATIVE_INFINITY)).isFalse();
+  }
+
+  @Test
+  void nonFloatingPointValues() {
+    assertThat(NaNUtil.isNaN(null)).isFalse();
+    assertThat(NaNUtil.isNaN("NaN")).isFalse();
+    assertThat(NaNUtil.isNaN(1)).isFalse();
+    assertThat(NaNUtil.isNaN(1L)).isFalse();
+  }
+}