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

voidassertFails(Class expectedThrowable, String pattern, int... values)
assert Fails 
try {
    getData(pattern, values);
    StringBuilder sb = new StringBuilder();
    sb.append("getData() with pattern ").append(coalesce(pattern)).append(" and values {");
    for (int i = 0; i < values.length; i++) {
        sb.append(" ").append(values[i]);
        if (i < values.length - 1) {
            sb.append(",");
...
voidassertFalse(boolean test, String message)
Throws an AssertionError if test is true. 
if (test)
    throw new AssertionError(message);
voidassertFalse(final boolean result, final String message)
assert False 
if (result)
    throw new IllegalArgumentException(message);
voidassertFalse(String string, boolean b)
assert False 
if (b)
    throw new IllegalStateException(string);
voidassertFieldPositive(int fieldValue, String fieldName)
Throws an IllegalArgumentException if the specified field is <=0. 
if (fieldValue <= 0)
    throw new IllegalArgumentException("Field '" + fieldName + "' must be a positive integer.");
voidassertGreater(long first, long second)
Assert that the first argument is greater than the second 
if (first <= second) {
    throw new AssertionError(String.format("expected <%d> to be greater than <%d>", first, second));
voidassertGreaterOrEqualsThan(final long value, final long limit, final String name)
Asserts that the parameter's value is equals or greater than a specific limit. 
if (value < limit) {
    throw new IllegalArgumentException(PREFIX + name + " is less than limit.");
voidassertGreaterThanOrEquals(String name, double comparedTo, double number)
assert Greater Than Or Equals 
if (lessThan(comparedTo, number)) {
    throw new AssertionError(
            name + ": " + number + " is not greater than or equal to " + comparedTo + " !");
voidassertHasInterface(Class interfaceClass, Class objectClass)
assert Has Interface 
Class<?>[] interfaces = objectClass.getInterfaces();
for (Class<?> singleInterface : interfaces) {
    if (singleInterface.equals(interfaceClass)) {
        return;
throw new AssertionError("Class " + objectClass.getName() + " did not implement interface: " + ""
        + interfaceClass.getName());
...
voidassertHasLength(String... params)
Check that string is not null 
if (params != null) {
    for (int idx = 0; idx < params.length; idx++) {
        String currentparam = params[idx];
        if (null == currentparam || currentparam.isEmpty()) {
            throw new IllegalArgumentException(
                    "[Assertion failed] - Parameter #" + idx + "(string)  must not be null nor empty");