Merge pull request #208 from bobaikato/Enhance-Partition-list

Enhance partition list
bobaikato · Oct 8, 2023 · c091e30 · c091e30
2 parents 9a9bedc + 44ed634
commit c091e30
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Showing 2 changed files with 30 additions and 2 deletions.
diff --git a/src/main/java/art/cutils/collection/ListPartition.java b/src/main/java/art/cutils/collection/ListPartition.java
@@ -27,6 +27,7 @@
 
 import java.util.AbstractList;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 import org.apache.commons.lang3.Validate;
@@ -78,6 +79,20 @@ private ListPartition(final List<? extends T> list) {
     return new ListPartition<>(list);
   }
 
+  /**
+   * Method to receive the array to be partitioned.
+   *
+   * @param array Array to be partitioned.
+   * @param <T> Array type
+   * @return instance of {@link ListPartition}
+   */
+  @SafeVarargs
+  @Contract("_ -> new")
+  public static <T> @NotNull ListPartition<T> of(final T... array) {
+    Objects.requireNonNull(array, "List cannot be null");
+    return new ListPartition<>(Arrays.asList(array));
+  }
+
   /**
    * Method used to get partition size.
    *

diff --git a/src/test/java/collection/ListPartitionTest.java b/src/test/java/collection/ListPartitionTest.java
@@ -29,10 +29,10 @@
 import static org.junit.jupiter.api.Assertions.assertNotEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;
 
+import art.cutils.collection.ListPartition;
 import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.Stream;
-import art.cutils.collection.ListPartition;
 import org.jetbrains.annotations.NotNull;
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Test;
@@ -135,6 +135,19 @@ void equalsAndHashCodeContractToBeValid() {
     assertEquals(p1.hashCode(), p2.hashCode());
   }
 
+  @Test
+  void test_Overridden_Partition_Of_Arrays() {
+    final ListPartition<String> p1 = of(new String[] {"A", "B", "C", "D", "E", "F"}).into(2);
+    final ListPartition<String> p2 = of("A", "B", "C", "D", "E", "F").into(2);
+
+    assertEquals(p1, p2);
+    assertEquals(p1, p1);
+    assertEquals(p2, p2);
+
+    // Hashcode
+    assertEquals(p1.hashCode(), p2.hashCode());
+  }
+
   @Test
   void equalsAndHashCodeContractToBeInvalid() {
     final ListPartition<?> p1 = of(asList("A", "B", "C", "D", "E")).into(3);
@@ -144,4 +157,4 @@ void equalsAndHashCodeContractToBeInvalid() {
     assertNotEquals(p1, p2.get(0));
     assertNotEquals(p1.hashCode(), p2.hashCode());
   }
-}
+}