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Additional null cast tests for varargs methods 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1132837 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Sebastian Bazley 2011-06-07 00:03:16 +00:00
parent 114e59cc83
commit d3e471045c
1 changed files with 15 additions and 6 deletions
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21
src/test/java/org/apache/commons/lang3/ClassUtilsTest.java
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@ -730,9 +730,14 @@ public class ClassUtilsTest extends TestCase {
public void testPrimitivesToWrappers() { public void testPrimitivesToWrappers() {
// test null // test null
// assertNull("null -> null", ClassUtils.primitivesToWrappers(null)); // assertNull("null -> null", ClassUtils.primitivesToWrappers(null)); // generates warning
assertNull("null -> null", ClassUtils.primitivesToWrappers((Class<?>[]) null)); // explicit cast to avoid warning assertNull("null -> null", ClassUtils.primitivesToWrappers((Class<?>[]) null)); // equivalent cast to avoid warning
// test empty array // Other possible casts for null
assertTrue("empty -> empty", Arrays.equals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers()));
Class<?>[] castNull = ClassUtils.primitivesToWrappers((Class<?>)null); // == new Class<?>[]{null}
assertTrue("(Class<?>)null -> [null]", Arrays.equals(new Class<?>[]{null}, castNull));
// test empty array is returned unchanged
// TODO this is not documented
assertEquals("empty -> empty", assertEquals("empty -> empty",
ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(ArrayUtils.EMPTY_CLASS_ARRAY)); ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.primitivesToWrappers(ArrayUtils.EMPTY_CLASS_ARRAY));
@ -801,9 +806,13 @@ public class ClassUtilsTest extends TestCase {
} }
public void testWrappersToPrimitivesNull() { public void testWrappersToPrimitivesNull() {
// assertNull("Wrong result for null input", ClassUtils.wrappersToPrimitives(null)); // assertNull("Wrong result for null input", ClassUtils.wrappersToPrimitives(null)); // generates warning
assertNull("Wrong result for null input", ClassUtils.wrappersToPrimitives((Class<?>[]) null)); // explicit cast assertNull("Wrong result for null input", ClassUtils.wrappersToPrimitives((Class<?>[]) null)); // equivalent cast
} // Other possible casts for null
assertTrue("empty -> empty", Arrays.equals(ArrayUtils.EMPTY_CLASS_ARRAY, ClassUtils.wrappersToPrimitives()));
Class<?>[] castNull = ClassUtils.wrappersToPrimitives((Class<?>)null); // == new Class<?>[]{null}
assertTrue("(Class<?>)null -> [null]", Arrays.equals(new Class<?>[]{null}, castNull));
}
public void testWrappersToPrimitivesEmpty() { public void testWrappersToPrimitivesEmpty() {
Class<?>[] empty = new Class[0]; Class<?>[] empty = new Class[0];