unit test candidate solutions
TRANSCRIPT
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 } }}
}
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) }
}
}
