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

voidassertParameterWithinBounds(String name, long lower, long upper, long parameter)
assert Parameter Within Bounds 
if (parameter < lower || parameter > upper) {
    throw new IllegalArgumentException(
            String.format("Invalid %s: %d (expected: %d <= n < %d)", name, parameter, lower, upper + 1));
voidassertPasswordMeetsRequirements(String password, boolean expected)
assert Password Meets Requirements 
boolean actual = passwordMeetsRequirements(password);
String quotedPassword = (password == null) ? "null" : "\"" + password + "\"";
String output = "passwordMeetsRequirements(" + quotedPassword + ") = " + actual;
if (actual == expected) {
    output += " (expected)";
} else {
    output += ", expected " + expected + ". NOOOOOOOOOOOOOOOOOOOOOOOOOO!";
System.out.println(output);
voidassertPositive(int num, String err)
assert Positive 
if (num <= 0) {
    throw new RuntimeException(err);
voidassertPositive(int val, String msg)
Checks what value is positive. 
if (val < 0) {
    throw new IllegalArgumentException(msg);
voidassertPositive(int value)
throws an IllegalArgumentException if the value is smaller then 0 
if (value < 0) {
    throw new IllegalArgumentException("value is smaller then 0");
voidassertPrecondition(boolean b)
Checks that a precondition (declared using the javadoc @pre tag) is satisfied. 
assertTrue(b);
voidassertQualifiedString(String str, String argName)
assert Qualified String 
if (!isQualifiedString(str)) {
    throw new IllegalArgumentException(
            "Null or zero length string found. str[" + str + "] argumentName[" + argName + "]");
doubleassertRange(String label, double value, double min, double max)
assert Range 
if (value < min || value > max) {
    throw new IllegalArgumentException(
            String.format("%s must be between %f and %f. Value was: %f", label, min, max, value));
return value;
voidassertRequiredArgs(Object[] methodArgs, int requiredArgs, String methodName)
assert Required Args 
if (methodArgs == null) {
    throw new IllegalArgumentException(
            String.format("Expected %d arguments for %s, got 0", requiredArgs, methodName));
} else if (methodArgs.length < requiredArgs) {
    throw new IllegalArgumentException(String.format("Expected %d arguments for %s, got %d", requiredArgs,
            methodName, methodArgs.length));
voidassertSame(Object expected, Object actual)
assert Same 
if (expected != actual)
    throw new AssertionError();