unit test candidate solutions

Unit Test Candidate Solutions

Xuefeng.Wu 2012.05

Types of Tests

Types of Tests

Unit test use mock environment : isolationsingle responsibility

Integration test use simulation 3rd applications, system ,drivers

Functional test use real 3rd applications, system , drivers

Test context

CSDM

CSDM Demo, CSDM

Controller

CSDM Service

Soap services

Domain Manager

Business logic managers

Test Targets

Technology Problems

• Environment and Context for developer • Test database prepare for developer • Test sample files prepare for developer• XML String parameter in service for soap services test• XML verify for soap services test• Mock Object for domain logic test• Model Date verify for domain logic test• Files verify for domain logic test• Notification verify for domain logic test• Unit testing styles for better test code

Test database prepare

• DB Unit/ unitils• Derby backup, restore on line• Derby date file recovery with RAM Disk

Test database prepare

• Baseline data• Each Test data is individual and isolation

DB Unit

• DbUnit has the ability to export and import your database data to and from XML datasets.

public DBUnitSampleTest(String name) { super( name ); System.setProperty( PropertiesBasedJdbcDatabaseTester.DBUNIT_DRIVER_CLASS, "org.apache.derby.jdbc.ClientDriver" ); System.setProperty( PropertiesBasedJdbcDatabaseTester.DBUNIT_CONNECTION_URL, "jdbc:derby://localhost:1527/pas;create=true" );}

protected IDataSet getDataSet() throws Exception {

return new FlatXmlDataSetBuilder().build(new FileInputStream("D:/Test/pas.xml"));

}

protected DatabaseOperation getSetUpOperation() throws Exception { return DatabaseOperation.REFRESH; }

protected DatabaseOperation getTearDownOperation() throws Exception { return DatabaseOperation.NONE; }

Perform setup of stale data once for entire test class or test suite

Derby backup, restore on line

String dbURL = "jdbc:derby:salesdb;restoreFrom=D:/dbbackups/salesdb"; Connection conn = DriverManager.getConnection(dbURL);

Derby date file recovery

• Hey! We use derby!• Use Embedded Derbey• Restore data files which in RAM Disk

<property name="hibernate.connection.url">jdbc:derby:database/pas;create=true</property>

<property name="hibernate.connection.driver_class">org.apache.derby.jdbc.EmbeddedDriver</property>

Test sample files prepare

• Dicom files,images,3D files• Custom file providers

XML String parameter in service

• Soap service is all about xml string in and out• But it's not easy to provide XML format

string in Java.

Java StringBuffer

String buildXML() { StringBuffer sb = new StringBuffer(); sb.append("<EXPRESSION>"); sb.append(" <EQUAL>"); sb.append(" <IDENT>x</IDENT>"); sb.append(" <PLUS>"); sb.append(" <INT>3</INT>"); sb.append(" <TIMES>"); sb.append(" <INT>4</INT>"); sb.append(" <INT>5</INT>"); sb.append(" </TIMES>"); sb.append(" </PLUS>"); sb.append(" </EQUAL>"); sb.append("</EXPRESSION>"); return sb.toString(); } // buildXML

Read xml file as input

readFileToString.java

Use Other Language raw string

val input = """ <trophy type="request" version="1.0"> <patient> <parameter key="patient_id" value="" /> C (If patient_id and DPMS_id are both null, PAS shall set Patient=patient_internal_id and DPMS_id=0.) <parameter key="dpms_id" value=""/> C (If both parameter are not null, use input value. Only above two conditions, others will be take as exception.) <parameter key="first_name" value=""/> O <parameter key="last_name" value=""/> O <parameter key="middle_name" value=""/> O <parameter key="prefix" value=""/> O <parameter key="suffix" value=""/> O <parameter key="birth_date" value=""/> O ("yyyy-MM-dd") <parameter key="sex" value=""/> O (male,female,other) <parameter key="pregnancy" value=""/> O (not pregnant,possibly pregnant,definitively pregnant,unknown) empty string means not application. <parameter key="insurance_number" value=""/> O <parameter key="address" value=""/> O <parameter key="town" value=""/> O <parameter key="postal_code" value=""/> O <parameter key="cellular_phone" value=""/> O <parameter key="home_phone" value=""/> O <parameter key="work_phone" value=""/> O <parameter key="comments" value=""/> O <parameter key="email" value=""/> O <parameter key="photo" value=""/> O <parameter key="kdis6_patient_directory" value=""/> O (used for import kdis6 images) <parameter key="images_imported" value=""/> C ("true/false", must be pair with kdis6_patient_directory) </patient> </trophy> """

XML verify

• The soap service output is xml string• You can use contains to verify simple value• But not easy to verify specific value

XmlUnit

• XML can be used for just about anything so deciding if two documents are equal to each other isn't as easy as a character for character match

public void testXPathValues() throws Exception { String myJavaFlavours = "<java-flavours><jvm current='some platforms'>1.1.x</jvm>" + "<jvm current='no'>1.2.x</jvm><jvm current='yes'>1.3.x</jvm>" + "<jvm current='yes' latest='yes'>1.4.x</jvm></java-flavours>";

assertXpathEvaluatesTo("1.4.x", "//jvm[@latest='yes']", myJavaFlavours); assertXpathEvaluatesTo("2", "count(//jvm[@current='yes'])", myJavaFlavours); assertXpathValuesEqual("//jvm[4]/@latest", "//jvm[4]/@current", myJavaFlavours); assertXpathValuesNotEqual("//jvm[2]/@current", "//jvm[3]/@current", myJavaFlavours); }

Scala XML

val ns = <foo><bar><baz/>Text</bar><bin/></foo>

ns \ "foo" // => <foo><bar>...</bar><bin/></foo>

ns \ "foo" \ "bar" // => <bar><baz/>Text</bar>

val ns = <foo id="bar"/> ns \ "@id" // => Text(bar)

JRuby REXML

xml = File.read('posts.xml') puts Benchmark.measure {

doc, posts = REXML::Document.new(xml), []

doc.elements.each('posts/post') do |p| posts << p.attributes

End}

Model Date verify

• After execute the method you want to know every thing is correct.

Solutions

• DbUnit can also help you to verify that your database data match an expected set of values.

• Call hibernate Dao Directly• Verify by other business method

Files verify

• Custom utile

• public static void checkDuplicateFiles(File dir)

Notification verify

• An ActiveMQ client utile• It should run in other thread and subscript

before call method• It should time out if no message received after

long time

Wait future notification

"There should have imageCreated notification after image is created " should {

" ok " in {

val srcPid = DataPrepare.createPatient val msg = future(ActiveMQ.receive("topic.imageCreated")) val imgId = DataPrepare.prepareImage(srcPid)._1 //wait a 3 second awaitAll(3000,msg) foreach{ v => v match { case Some(m) => { m.toString must contain (srcPid)

m.toString must contain (imgId) } case None => 1 must_== 2 } }}

}

Mock Object

EasyMock

public void testTransferShouldDebitSourceAccount(){

AccountController controller = new AccountController();

Account from = createMock(Account.class)

Account to = createMock(Account.class)

from.debit(42);

replay(from);

replay(to);

controller.transfer(from,to,42);

verify(from);

}

jMock

Mockery context = new Mockery(); public void testTransferShouldDebitSourceAccount(){

AccountController controller = new AccountController();

Account from = context.mock(Account.class)

Account to = context.mock(Account.class)

context.checking(new Expectations() {{

oneOf(from).debit(42);

}}

controller.transfer(from,to,42);

context.assertIsSatisfied();

}

mockito

public void testTransferShouldDebitSourceAccount(){

AccountController controller = new AccountController();

Account from = mock(Account.class)

Account to = mock(Account.class)

controller.transfer(from,to,42);

verify(from).debit(42);

}

public void testTransferShouldDebitSourceAccount(){

AccountController controller = new AccountController();

Account from = createMock(Account.class)

Account to = createMock(Account.class)

from.debit(42);

replay(from);

replay(to);

controller.transfer(from,to,42);

verify(from); }

Mockery context = new Mockery(); public void testTransferShouldDebitSourceAccount(){

AccountController controller = new AccountController();

Account from = context.mock(Account.class)

Account to = context.mock(Account.class)

context.checking(new Expectations() {{ oneOf(from).debit(42);

}}

controller.transfer(from,to,42);

context.assertIsSatisfied(); }

public void testTransferShouldDebitSourceAccount(){

AccountController controller = new AccountController();

Account from = mock(Account.class)

Account to = mock(Account.class)

controller.transfer(from,to,42);

verify(from).debit(42);

}

Mock what?

Environment and Context

Name Location Interaction

DB Internal JDBC connect with hibernate

ActiveMQ Internal socket,ActiveMQ library

Demo External cmd,socket

Config file External read/write file

Registration table External system tool,reg

Schedule External trigger

2D External cmd,socket

Object Applications External cmd

Unit testing styles

• BDD• Better test code• It’s better not only for developer. If P.O. can

read our test code is better • The test code should like specifics

Traditional Status assert test

public void testAdd() {

int num1 = 3;

int num2 = 2;

int total = 5;

int sum = 0;

sum = Math.add(num1, num2);

assertEquals(sum, total);

}

BDD specifications style class HelloWorldSpec extends Specification {

"The 'Hello world' string" should {

"contain 11 characters" in {

"Hello world" must have size(11) }

"start with 'Hello'" in {

"Hello world" must startWith("Hello") }

"end with 'world'" in {

"Hello world" must endWith("world") }

}

"The sum" should {“ equals total " in { val num1 = 2,num2 = 3, total = 5

Math.add(num1, num2) must equalsTo(total) }

}

}