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

voidassertStringNotEmpty(String str, String name)
Check if the string is empty. 
assertObjectNotNull(str, name);
if (str.trim().length() == 0) {
    throw new IllegalArgumentException("the string " + name + " should not be empty.");
StringassertStringNotEmpty(String string, String fieldName)
Asserts that the string is not empty. 
assertNotNull(string, fieldName);
if (string.isEmpty()) {
    throw new IllegalArgumentException(String.format("%s cannot be empty", fieldName));
return string;
voidassertTesting()
Assert that we are running JUnit tests. 
try {
    Class.forName("junit.framework.TestCase");
} catch (ClassNotFoundException e) {
    throw new IllegalStateException("This method must only be used by JUnit tests.");
voidassertThrows(Class exception, Runnable action)
assert Throws 
try {
    action.run();
    throw new AssertionError(
            "Expected exception: " + exception.getTypeName() + ", but no exception thrown");
} catch (Exception e) {
    if (!e.getClass().equals(exception)) {
        throw new AssertionError("Expected exception: " + exception.getTypeName() + ", but was "
                + e.getClass().getTypeName());
...
voidassertTwoParameters(Class clz, String method, double... args)
assert Two Parameters 
if (args == null || args.length != 2)
    throw new IllegalArgumentException(clz.getName() + "." + method
            + "(...) is only supported for two parameters (got " + args.length + ")");
TassertUnreachable()
assert Unreachable 
throw new AssertionError("Unreachable.");
voidassertValid(int piece)
assert Valid 
if (!isValid(piece)) {
    throw new IllegalArgumentException("Invalid piece: " + piece);
voidassertValidBrowserType(int aBrowserType)
assert Valid Browser Type 
switch (aBrowserType) {
case BROWSER_WAP:
case BROWSER_COMPANY:
case BROWSER_WIFI:
case BROWSER_UNITE:
    return;
throw new IllegalArgumentException("Not a valid browser type");
...
voidassertValidColumnName(String name)
assert Valid Column Name 
for (char c : name.toCharArray()) {
    if (c == '.')
        continue;
    if (Character.isJavaIdentifierPart(c))
        continue;
    throw new IllegalArgumentException("invalid character in field name");
voidassertValidItemName(String itemName)
Ensures that the specified name of the item is valid. 
if (!isValidItemName(itemName)) {
    throw new IllegalArgumentException("The specified name of the item '" + itemName + "' is not valid!");