org.openxava.util
Class Assert

java.lang.Object
  org.openxava.util.Assert

public class Assert
extends java.lang.Object

Utility to make asserts.

In most case this asserts verify if the object is null. There are a variety of methods that throw differents exceptions.
One of the thrown exception is AssertException, but this is not mandatory.

If some of this methods throw exception this is usually due to a software error, normally a exception that the user-programmer has not fullfilled the contract.
The messages does not have to specify the place where contract is break or which contract is broken. The trace (that always is printed) indicate the place and the exception class. In the doc of method that throw the exception you can obtain more info about it.
The names and behaviour match with JUnit, the difference is the thrown exceptions.

Author:

Javier Paniza

Constructor Summary

Assert()

Method Summary

static void	arg(java.lang.Object o) Verify argument.
static void	arg(java.lang.Object o1, java.lang.Object o2) Verify arguments.
static void	arg(java.lang.Object o1, java.lang.Object o2, java.lang.Object o3) Verify arguments.
static void	arg(java.lang.Object o1, java.lang.Object o2, java.lang.Object o3, java.lang.Object o4) Verify arguments.
static void	arg(java.lang.Object o1, java.lang.Object o2, java.lang.Object o3, java.lang.Object o4, java.lang.Object o5) Verify arguments.
static void	arg(java.lang.Object o1, java.lang.Object o2, java.lang.Object o3, java.lang.Object o4, java.lang.Object o5, java.lang.Object o6) Verify arguments.
static void	assertEquals(double expected, double actual, double delta) Asserts that two doubles are equal.
static void	assertEquals(long expected, long actual) Asserts that two longs are equal.
static void	assertEquals(java.lang.Object expected, java.lang.Object actual) Asserts that two objects are equal.
static void	assertEquals(java.lang.String message, double expected, double actual, double delta) Asserts that two doubles are equal.
static void	assertEquals(java.lang.String message, long expected, long actual) Asserts that two longs are equal.
static void	assertEquals(java.lang.String message, java.lang.Object expected, java.lang.Object actual) Asserts that two objects are equal.
static void	assertNotNull(java.lang.Object object) Asserts that an object isn't null.
static void	assertNotNull(java.lang.String message, java.lang.Object object) Asserts that an object isn't null.
static void	assertNull(java.lang.Object object) Asserts that an object is null.
static void	assertNull(java.lang.String message, java.lang.Object object) Asserts that an object is null.
static void	assertSame(java.lang.Object expected, java.lang.Object actual) Asserts that two objects refer to the same object.
static void	assertSame(java.lang.String message, java.lang.Object expected, java.lang.Object actual) Asserts that two objects refer to the same object.
static void	assertTrue(boolean condition) Asserts that a condition is true.
static void	assertTrue(java.lang.String message, boolean condition) Asserts that a condition is true.
static void	fail() Throws a AssertException and print the trace.
static void	fail(java.lang.String message) Throws a AssertException and print the trace.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Assert

public Assert()

Method Detail

arg

public static final void arg(java.lang.Object o)

Verify argument.

Throws:

java.lang.IllegalArgumentException - If o == null.

arg

public static final void arg(java.lang.Object o1,
                             java.lang.Object o2)

Verify arguments.

Throws:

java.lang.IllegalArgumentException - If o1 == null || o2 == null.

arg

public static final void arg(java.lang.Object o1,
                             java.lang.Object o2,
                             java.lang.Object o3)

Verify arguments.

Throws:

java.lang.IllegalArgumentException - If o1 == null || o2 == null || o3 == null.

arg

public static final void arg(java.lang.Object o1,
                             java.lang.Object o2,
                             java.lang.Object o3,
                             java.lang.Object o4)

Verify arguments.

Throws:

java.lang.IllegalArgumentException - If o1 == null || o2 == null || o3 == null || o4 == null.

arg

public static final void arg(java.lang.Object o1,
                             java.lang.Object o2,
                             java.lang.Object o3,
                             java.lang.Object o4,
                             java.lang.Object o5)

Verify arguments.

Throws:

java.lang.IllegalArgumentException - If o1 == null || o2 == null || o3 == null || o4 == null || o5 == null.

arg

public static final void arg(java.lang.Object o1,
                             java.lang.Object o2,
                             java.lang.Object o3,
                             java.lang.Object o4,
                             java.lang.Object o5,
                             java.lang.Object o6)

Verify arguments.

Throws:

java.lang.IllegalArgumentException - If o1 == null || o2 == null || o3 == null || o4 == null || o5 == null || o6 == null.

assertTrue

public static void assertTrue(java.lang.String message,
                              boolean condition)

Asserts that a condition is true.

Throws:

AssertException - If condition is false

assertTrue

public static void assertTrue(boolean condition)

Asserts that a condition is true.

Throws:

AssertException - If condition is false

assertEquals

public static void assertEquals(double expected,
                                double actual,
                                double delta)

Asserts that two doubles are equal.

Parameters:

expected - the expected value of an object

actual - the actual value of an object

delta - tolerated delta

Throws:

AssertException - If assert is not fulfilled

assertEquals

public static void assertEquals(long expected,
                                long actual)

Asserts that two longs are equal.

Parameters:

expected - the expected value of an object

actual - the actual value of an object

Throws:

AssertException - If assert is not fulfilled

assertEquals

public static void assertEquals(java.lang.Object expected,
                                java.lang.Object actual)

Asserts that two objects are equal.

Parameters:

expected - the expected value of an object

actual - the actual value of an object

Throws:

AssertException - If assert is not fulfilled

assertEquals

public static void assertEquals(java.lang.String message,
                                double expected,
                                double actual,
                                double delta)

Asserts that two doubles are equal.

Parameters:

message - the detail message for this assertion

expected - the expected value of an object

actual - the actual value of an object

delta - tolerated delta

Throws:

AssertException - If assert is not fulfilled

assertEquals

public static void assertEquals(java.lang.String message,
                                long expected,
                                long actual)

Asserts that two longs are equal.

Parameters:

message - the detail message for this assertion

expected - the expected value of an object

actual - the actual value of an object

Throws:

AssertException - If assert is not fulfilled

assertEquals

public static void assertEquals(java.lang.String message,
                                java.lang.Object expected,
                                java.lang.Object actual)

Asserts that two objects are equal. If they are not an AssertionFailedError is thrown.

Parameters:

message - the detail message for this assertion

expected - the expected value of an object

actual - the actual value of an object

Throws:

AssertException - If assert is not fulfilled

assertNotNull

public static void assertNotNull(java.lang.Object object)

Asserts that an object isn't null.

Throws:

AssertException - If assert is not fulfilled

assertNotNull

public static void assertNotNull(java.lang.String message,
                                 java.lang.Object object)

Asserts that an object isn't null.

Throws:

AssertException - If assert is not fulfilled

assertNull

public static void assertNull(java.lang.Object object)

Asserts that an object is null.

Throws:

AssertException - If assert is not fulfilled

assertNull

public static void assertNull(java.lang.String message,
                              java.lang.Object object)

Asserts that an object is null.

Throws:

AssertException - If assert is not fulfilled

assertSame

public static void assertSame(java.lang.Object expected,
                              java.lang.Object actual)

Asserts that two objects refer to the same object.

Parameters:

expected - the expected value of an object

actual - the actual value of an object

Throws:

AssertException - If assert is not fulfilled

assertSame

public static void assertSame(java.lang.String message,
                              java.lang.Object expected,
                              java.lang.Object actual)

Asserts that two objects refer to the same object.

Parameters:

message - the detail message for this assertion

expected - the expected value of an object

actual - the actual value of an object

Throws:

AssertException - If assert is not fulfilled

fail

public static final void fail()

Throws a AssertException and print the trace.

fail

public static final void fail(java.lang.String message)

Throws a AssertException and print the trace.