1 files changed, 275 insertions, 0 deletions
diff --git a/src/test/java/org/apache/commons/lang3/mutable/MutableLongTest.java b/src/test/java/org/apache/commons/lang3/mutable/MutableLongTest.java
new file mode 100644
index 000000000..32ee0d803
--- /dev/null
+++ b/src/test/java/org/apache/commons/lang3/mutable/MutableLongTest.java
@@ -0,0 +1,275 @@
+/*
+ * 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.commons.lang3.mutable;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import org.apache.commons.lang3.AbstractLangTest;
+import org.junit.jupiter.api.Test;
+
+/**
+ * JUnit tests.
+ *
+ * @see MutableLong
+ */
+public class MutableLongTest extends AbstractLangTest {
+
+    @Test
+    public void testAddAndGetValueObject() {
+        final MutableLong mutableLong = new MutableLong(0L);
+        final long result = mutableLong.addAndGet(Long.valueOf(1L));
+
+        assertEquals(1L, result);
+        assertEquals(1L, mutableLong.longValue());
+    }
+
+    @Test
+    public void testAddAndGetValuePrimitive() {
+        final MutableLong mutableLong = new MutableLong(0L);
+        final long result = mutableLong.addAndGet(1L);
+
+        assertEquals(1L, result);
+        assertEquals(1L, mutableLong.longValue());
+    }
+
+    @Test
+    public void testAddValueObject() {
+        final MutableLong mutNum = new MutableLong(1);
+        mutNum.add(Long.valueOf(1));
+
+        assertEquals(2, mutNum.intValue());
+        assertEquals(2L, mutNum.longValue());
+    }
+
+    @Test
+    public void testAddValuePrimitive() {
+        final MutableLong mutNum = new MutableLong(1);
+        mutNum.add(1);
+
+        assertEquals(2, mutNum.intValue());
+        assertEquals(2L, mutNum.longValue());
+    }
+
+    @Test
+    public void testCompareTo() {
+        final MutableLong mutNum = new MutableLong(0);
+
+        assertEquals(0, mutNum.compareTo(new MutableLong(0)));
+        assertEquals(+1, mutNum.compareTo(new MutableLong(-1)));
+        assertEquals(-1, mutNum.compareTo(new MutableLong(1)));
+    }
+
+    @Test
+    public void testCompareToNull() {
+        final MutableLong mutNum = new MutableLong(0);
+        assertThrows(NullPointerException.class, () -> mutNum.compareTo(null));
+    }
+
+    @Test
+    public void testConstructorNull() {
+        assertThrows(NullPointerException.class, () -> new MutableLong((Number) null));
+    }
+
+    @Test
+    public void testConstructors() {
+        assertEquals(0, new MutableLong().longValue());
+
+        assertEquals(1, new MutableLong(1).longValue());
+
+        assertEquals(2, new MutableLong(Long.valueOf(2)).longValue());
+        assertEquals(3, new MutableLong(new MutableLong(3)).longValue());
+
+        assertEquals(2, new MutableLong("2").longValue());
+
+    }
+
+    @Test
+    public void testDecrement() {
+        final MutableLong mutNum = new MutableLong(1);
+        mutNum.decrement();
+
+        assertEquals(0, mutNum.intValue());
+        assertEquals(0L, mutNum.longValue());
+    }
+
+    @Test
+    public void testDecrementAndGet() {
+        final MutableLong mutNum = new MutableLong(1L);
+        final long result = mutNum.decrementAndGet();
+
+        assertEquals(0, result);
+        assertEquals(0, mutNum.intValue());
+        assertEquals(0L, mutNum.longValue());
+    }
+
+    @Test
+    public void testEquals() {
+        final MutableLong mutNumA = new MutableLong(0);
+        final MutableLong mutNumB = new MutableLong(0);
+        final MutableLong mutNumC = new MutableLong(1);
+
+        assertEquals(mutNumA, mutNumA);
+        assertEquals(mutNumA, mutNumB);
+        assertEquals(mutNumB, mutNumA);
+        assertEquals(mutNumB, mutNumB);
+        assertNotEquals(mutNumA, mutNumC);
+        assertNotEquals(mutNumB, mutNumC);
+        assertEquals(mutNumC, mutNumC);
+        assertNotEquals(null, mutNumA);
+        assertNotEquals(mutNumA, Long.valueOf(0));
+        assertNotEquals("0", mutNumA);
+    }
+
+    @Test
+    public void testGetAndAddValueObject() {
+        final MutableLong mutableLong = new MutableLong(0L);
+        final long result = mutableLong.getAndAdd(Long.valueOf(1L));
+
+        assertEquals(0L, result);
+        assertEquals(1L, mutableLong.longValue());
+    }
+
+    @Test
+    public void testGetAndAddValuePrimitive() {
+        final MutableLong mutableLong = new MutableLong(0L);
+        final long result = mutableLong.getAndAdd(1L);
+
+        assertEquals(0L, result);
+        assertEquals(1L, mutableLong.longValue());
+    }
+
+    @Test
+    public void testGetAndDecrement() {
+        final MutableLong mutNum = new MutableLong(1L);
+        final long result = mutNum.getAndDecrement();
+
+        assertEquals(1, result);
+        assertEquals(0, mutNum.intValue());
+        assertEquals(0L, mutNum.longValue());
+    }
+
+    @Test
+    public void testGetAndIncrement() {
+        final MutableLong mutNum = new MutableLong(1L);
+        final long result = mutNum.getAndIncrement();
+
+        assertEquals(1, result);
+        assertEquals(2, mutNum.intValue());
+        assertEquals(2L, mutNum.longValue());
+    }
+
+    @Test
+    public void testGetSet() {
+        final MutableLong mutNum = new MutableLong(0);
+        assertEquals(0, new MutableLong().longValue());
+        assertEquals(Long.valueOf(0), new MutableLong().getValue());
+
+        mutNum.setValue(1);
+        assertEquals(1, mutNum.longValue());
+        assertEquals(Long.valueOf(1), mutNum.getValue());
+
+        mutNum.setValue(Long.valueOf(2));
+        assertEquals(2, mutNum.longValue());
+        assertEquals(Long.valueOf(2), mutNum.getValue());
+
+        mutNum.setValue(new MutableLong(3));
+        assertEquals(3, mutNum.longValue());
+        assertEquals(Long.valueOf(3), mutNum.getValue());
+    }
+
+    @Test
+    public void testHashCode() {
+        final MutableLong mutNumA = new MutableLong(0);
+        final MutableLong mutNumB = new MutableLong(0);
+        final MutableLong mutNumC = new MutableLong(1);
+
+        assertEquals(mutNumA.hashCode(), mutNumA.hashCode());
+        assertEquals(mutNumA.hashCode(), mutNumB.hashCode());
+        assertNotEquals(mutNumA.hashCode(), mutNumC.hashCode());
+        assertEquals(mutNumA.hashCode(), Long.valueOf(0).hashCode());
+    }
+
+    @Test
+    public void testIncrement() {
+        final MutableLong mutNum = new MutableLong(1);
+        mutNum.increment();
+
+        assertEquals(2, mutNum.intValue());
+        assertEquals(2L, mutNum.longValue());
+    }
+
+    @Test
+    public void testIncrementAndGet() {
+        final MutableLong mutNum = new MutableLong(1L);
+        final long result = mutNum.incrementAndGet();
+
+        assertEquals(2, result);
+        assertEquals(2, mutNum.intValue());
+        assertEquals(2L, mutNum.longValue());
+    }
+
+    @Test
+    public void testPrimitiveValues() {
+        final MutableLong mutNum = new MutableLong(1L);
+        assertEquals(1.0F, mutNum.floatValue());
+        assertEquals(1.0, mutNum.doubleValue());
+        assertEquals( (byte) 1, mutNum.byteValue() );
+        assertEquals( (short) 1, mutNum.shortValue() );
+        assertEquals( 1, mutNum.intValue() );
+        assertEquals( 1L, mutNum.longValue() );
+    }
+
+    @Test
+    public void testSetNull() {
+        final MutableLong mutNum = new MutableLong(0);
+        assertThrows(NullPointerException.class, () -> mutNum.setValue(null));
+    }
+
+    @Test
+    public void testSubtractValueObject() {
+        final MutableLong mutNum = new MutableLong(1);
+        mutNum.subtract(Long.valueOf(1));
+
+        assertEquals(0, mutNum.intValue());
+        assertEquals(0L, mutNum.longValue());
+    }
+
+    @Test
+    public void testSubtractValuePrimitive() {
+        final MutableLong mutNum = new MutableLong(1);
+        mutNum.subtract(1);
+
+        assertEquals(0, mutNum.intValue());
+        assertEquals(0L, mutNum.longValue());
+    }
+
+    @Test
+    public void testToLong() {
+        assertEquals(Long.valueOf(0L), new MutableLong(0L).toLong());
+        assertEquals(Long.valueOf(123L), new MutableLong(123L).toLong());
+    }
+
+    @Test
+    public void testToString() {
+        assertEquals("0", new MutableLong(0).toString());
+        assertEquals("10", new MutableLong(10).toString());
+        assertEquals("-123", new MutableLong(-123).toString());
+    }
+
+}