Java Utililty Methods Assert

List of utility methods to do Assert

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Description

The list of methods to do Assert are organized into topic(s).

Method

voidassertNotTrue(boolean conditionThatMustNotBeTrue, String msgWhenTrue)
assert Not True 
if (conditionThatMustNotBeTrue) {
    throw new IllegalArgumentException(msgWhenTrue);
voidassertNotTrue(boolean value, String message)
Throws exception if value is true. 
if (value == true) {
    throw new IllegalArgumentException(message);
booleanassertObjectEmpty(Object value)
assert Object Empty 
return value != null;
voidassertObjEquals(Object expected, Object actual)
assert Obj Equals 
assertWithMessage(null, expected, actual);
voidassertOffsetLengthValid(int offset, int length, int arrayLength)
assert Offset Length Valid 
if (offset < 0) {
    throw new IllegalArgumentException("The array offset was negative");
if (length < 0) {
    throw new IllegalArgumentException("The array length was negative");
if (offset + length > arrayLength) {
    throw new ArrayIndexOutOfBoundsException("The array offset+length would access past end of array");
...
voidassertOid(final String s)
assert Oid 
if ((s != null) && !isOid(s)) {
    throw new RuntimeException("Expected an OID but found " + s);
voidassertOneBitMask(long mask)
assert One Bit Mask 
assert (mask & (mask - 1)) == 0 : "Mask must have only one bit set, but got: " + Long.toBinaryString(mask);
ObjectassertParameter(Class expectedClass, Object[] params, int index)
Utility method to provide more descriptive unchecked exceptions for unmarshalling object from Tapestry service Parameters. 
if (params == null || params.length < index) {
    throw new IllegalArgumentException("Missing parameter at position " + index);
if (params[index] != null) {
    Class actualClass = params[index].getClass();
    if (!expectedClass.isAssignableFrom(actualClass)) {
        throw new IllegalArgumentException("Object of class type " + expectedClass.getName()
                + " was expected at position " + index + " but class type was " + actualClass.getName());
...
voidassertParameterInRange(long param, long lower, long upper)
assert Parameter In Range 
if (!checkParamRange(param, lower, true, upper, true)) {
    throw new IllegalArgumentException(
            String.format("%d not in valid range [%d, %d]", param, lower, upper));
voidassertParameterWithinBounds(String name, long lower, long upper, long parameter)
Throw an IllegalArgumentException when a number is not within the supplied range. 
if (parameter < lower || parameter > upper) {
    throw new IllegalArgumentException(
            String.format("Invalid %s: %d (expected: %d <= n < %d)", name, parameter, lower, upper + 1));