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[LANG-1596] ArrayUtils.toPrimitive(Object) does not support boolean and other types (#607) 

- Add support for the missing types to toPrimitive(Object)
- Added tests for toPrimitive methods which did not have test coverage yet
- Added explicit test for the toPrimitive(Object) method for all primitive types
This commit is contained in:
Richard Eckart de Castilho 2020-08-15 05:25:54 +02:00 committed by GitHub
parent 600f0c8a1d
commit 6996806101
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2 changed files with 25 additions and 0 deletions
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9
src/main/java/org/apache/commons/lang3/ArrayUtils.java
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@ -9478,6 +9478,15 @@ public static Object toPrimitive(final Object array) {
}
final Class<?> ct = array.getClass().getComponentType();
final Class<?> pt = ClassUtils.wrapperToPrimitive(ct);
if (Boolean.TYPE.equals(pt)) {
return toPrimitive((Boolean[]) array);
}
if (Character.TYPE.equals(pt)) {
return toPrimitive((Character[]) array);
}
if (Byte.TYPE.equals(pt)) {
return toPrimitive((Byte[]) array);
}
if (Integer.TYPE.equals(pt)) {
return toPrimitive((Integer[]) array);
}

16
src/test/java/org/apache/commons/lang3/ArrayUtilsTest.java
View File

@ -341,6 +341,9 @@ public void testContainsShort() {
@Test
public void testCreatePrimitiveArray() {
assertNull(ArrayUtils.toPrimitive((Object[]) null));
assertArrayEquals(new boolean[]{true}, ArrayUtils.toPrimitive(new Boolean[]{true}));
assertArrayEquals(new char[]{'a'}, ArrayUtils.toPrimitive(new Character[]{'a'}));
assertArrayEquals(new byte[]{1}, ArrayUtils.toPrimitive(new Byte[]{1}));
assertArrayEquals(new int[]{}, ArrayUtils.toPrimitive(new Integer[]{}));
assertArrayEquals(new short[]{2}, ArrayUtils.toPrimitive(new Short[]{2}));
assertArrayEquals(new long[]{2, 3}, ArrayUtils.toPrimitive(new Long[]{2L, 3L}));
@ -348,6 +351,19 @@ public void testCreatePrimitiveArray() {
assertArrayEquals(new double[]{2.718}, ArrayUtils.toPrimitive(new Double[]{2.718}), 0.1);
}
@Test
public void testCreatePrimitiveArrayViaObjectArray() {
assertNull(ArrayUtils.toPrimitive((Object) null));
assertArrayEquals(new boolean[]{true}, (boolean[]) ArrayUtils.toPrimitive((Object) new Boolean[]{true}));
assertArrayEquals(new char[]{'a'}, (char[]) ArrayUtils.toPrimitive((Object) new Character[]{'a'}));
assertArrayEquals(new byte[]{1}, (byte[]) ArrayUtils.toPrimitive((Object) new Byte[]{1}));
assertArrayEquals(new int[]{}, (int[]) ArrayUtils.toPrimitive((Object) new Integer[]{}));
assertArrayEquals(new short[]{2}, (short[]) ArrayUtils.toPrimitive((Object) new Short[]{2}));
assertArrayEquals(new long[]{2, 3}, (long[]) ArrayUtils.toPrimitive((Object) new Long[]{2L, 3L}));
assertArrayEquals(new float[]{3.14f}, (float[]) ArrayUtils.toPrimitive((Object) new Float[]{3.14f}), 0.1f);
assertArrayEquals(new double[]{2.718}, (double[]) ArrayUtils.toPrimitive((Object) new Double[]{2.718}), 0.1);
}
/**
* Tests generic empty array creation with generic type.
*/