Transcript JUnit - GETI

Testes Unitários
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Verificar a funcionalidade de partes do
sistema.
Boas práticas para testes:
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Evitar redundância;
Permitir que todos os possíveis caminhos
sejam cobertos com vários testes;
Encontrar erros ainda não descobertos.
XUnit
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Provê estrutura de testes unitários.
Conceito de testes automatizados.
Exemplos:
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SUnit: SmallTalk; CPPUnit: C++;
PHPUnit, PHP; Dunit: Delphi; JUnit: Java.
JUnit
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Popularidade
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Facilidade em
seu uso
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Keep the bar
green to keep
the code
clean...
Example
JUnit: Annotations
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@BeforeClass
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@Before
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@BeforeClass public static void onlyOnce(){
}
@Before public void setup() {
}
@Test
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@Test public void verifyName() {
}
JUnit: Assert
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A set of assertion methods useful for writing
tests.
Only failed assertions are recorded.
These methods can be used directly:
Assert. assertEquals(...)
But they read better if they are referenced
through static import:
import static org.junit.Assert.*;
Attributes:
[message], expected, actual, [delta]*
* for double
JUnit: Assert main methods
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static void assertEquals
static void assertNotEquals
static void assertNull
static void assertNotNull
static void assertFalse
static void assertTrue
fail(java.lang.String message)
EasyMock
Easy Mock: What is it?
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EasyMock provides Mock Objects for
interfaces in JUnit tests by generating them
on the fly using Java's proxy mechanism.
Due to EasyMock's unique style of recording
expectations, most refactorings will not
affect the Mock Objects. So EasyMock is a
perfect fit for Test-Driven Development.
EasyMock is open source software available
under the terms of the MIT license.
Development and downloads are hosted on
SourceForge.
Why mock it?
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Unit testing is the testing of software units in
isolation. However, most units do not work
alone, but they collaborate with other units.
To test a unit in isolation, we have to
simulate the collaborators in the test.
A Mock Object is a test-oriented
replacement for a collaborator. It is
configured to simulate the object that it
replaces in a simple way. In contrast to a
stub, a Mock Object also verifies whether it
is used as expected.
DBUnit
DBUnit: What is it?
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DbUnit is a JUnit extension (also usable with Ant)
targeted for database-driven projects that, among
other things, puts your database into a known state
between test runs. This is an excellent way to avoid
the myriad of problems that can occur when one
test case corrupts the database and causes
subsequent tests to fail or exacerbate the damage.
DbUnit has the ability to export and import your
database data to and from XML datasets. Since
version 2.0, DbUnit can works with very large
dataset when use in streaming mode. DbUnit can
also helps you to verify that your database data
match expected set of values.
EMMA
A free Java code coverage
tool
EMMA: what is it?
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EMMA is an open-source toolkit for measuring and
reporting Java code coverage.
EMMA distinguishes itself from other tools by going
after a unique feature combination: support for
large-scale enterprise software development while
keeping individual developer's work fast and
iterative at the same time.
Every developer on your team can now get code
coverage for free and they can get it fast! EMMA is
so lightweight developers can use it during the
process of writing tests instead of waiting for a "test
build". This gets code coverage where it belongs:
helping with design and implementation before the
code is checked in.
Example
Cruise Control
Continuous Integration
Cruise Control: What is it?
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CruiseControl is a framework for a
continuous build process. It includes, but is
not limited to, plugins for email notification,
Ant, and various source control tools. A web
interface is provided to view the details of
the current and previous builds.
CruiseControl is distributed under a BSDstyle license and is free for use.
CruiseControl adheres to an open source
model and therefore makes the source code
freely available.
References
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http://*.sf.net