free barcode generator in asp.net c# HELLO WORLD! USING DDT in Font

Generate Code39 in Font HELLO WORLD! USING DDT

CHAPTER 3 HELLO WORLD! USING DDT
Code 3/9 Creation In None
Using Barcode maker for Font Control to generate, create Code 3/9 image in Font applications.
www.OnBarcode.com
Generating Denso QR Bar Code In None
Using Barcode maker for Font Control to generate, create QR Code image in Font applications.
www.OnBarcode.com
} XPathHelper is a general-purpose helper class that we cobbled together (we haven t shown it here as it doesn t lend much to the discussion). It initially parses an XML document (the Account XML in this case). Then with each populate() method call, it populates the target object (Account) using the given setter method name ( setUserName ), and an XPath expression to dig the element out of the XML ( //username ). PopulateAccountFromXmlTest contains another two scenarios, which we ll implement next: /** * @input see separate file - tests/resources/AccountWithQuotes.xml * @AcceptanceCriteria Correctly parsed. */ @Test public void quotationMarksInEachElement() { String userXml = loadFile("tests/resources/AccountWithQuotes.xml"); try { account.populateFrom(userXml); } catch (XPathParseException e) { fail("Parsing should have succeeded: " + e.getMessage()); } } This one simply loads an XML file in which the data contains quotation marks. If a parse exception is thrown, the test fails. The third test scenario is the flipside of this one: we want to see the parsing trip up over some invalid data (missing elements): /** * The Username, First Name and Last Name elements must be present. * * @input see separate file - tests/resources/AccountWithMissingElements.xml * @AcceptanceCriteria A parse exception should be thrown. */ @Test(expected=XPathParseException.class) public void throwErrorIfExpectedFieldsAreMissing() throws Exception{ String userXml = loadFile("tests/resources/AccountWithQuotes.xml"); account.populateFrom(userXml); } This one s easy: it uses a nice feature of JUnit to specify that we re expecting an XPathParseException to be thrown. If the exception is thrown, the test passes; otherwise, it fails. Referring back to the populateFrom(userXml) method that we added a few moments ago, there s no specific code there to check for the mandatory fields; however, the helper class, XPathHelper, throws an exception if the element it s looking for is absent. Let s move on to one of the controller test classes, ValidatePasswordSyntaxTest. First, here is the fixture setup: public class ValidatePasswordSyntaxTest { private Account account; @Before public void setUp() throws Exception{ account = new Account();
Generating DataMatrix In None
Using Barcode generation for Font Control to generate, create Data Matrix 2d barcode image in Font applications.
www.OnBarcode.com
EAN-13 Supplement 5 Maker In None
Using Barcode printer for Font Control to generate, create EAN13 image in Font applications.
www.OnBarcode.com
CHAPTER 3 HELLO WORLD! USING DDT
Barcode Creation In None
Using Barcode generator for Font Control to generate, create Barcode image in Font applications.
www.OnBarcode.com
Code-128 Printer In None
Using Barcode printer for Font Control to generate, create Code 128 Code Set B image in Font applications.
www.OnBarcode.com
} @After public void tearDown() throws Exception{ account = null; } The sunny day scenario passes in a valid password. No assertXX statement is needed: we simply declare AccountValidationException in the throws clause. If the validation exception is thrown, the test basically fails: /** * The 'sunny day' scenario * * @input "MyPassword123" * @AcceptanceCriteria Validation passes. */ @Test public void defaultRunScenario() throws AccountValidationException { account.validatePasswordSyntax("MyPassword123"); } The remaining test scenarios are easy: each one passes in an invalid password, and expects an AccountValidationException to be thrown: /** * @input "mylowercasepassword" * @AcceptanceCriteria Validation fails. */ @Test(expected=AccountValidationException.class) public void allLowerCaseShouldFail() throws Exception{ account.validatePasswordSyntax("mylowercasepassword"); }
Painting PDF-417 2d Barcode In None
Using Barcode encoder for Font Control to generate, create PDF417 image in Font applications.
www.OnBarcode.com
Print Royal Mail Barcode In None
Using Barcode generator for Font Control to generate, create British Royal Mail 4-State Customer Barcode image in Font applications.
www.OnBarcode.com
Note It s not unknown in test-driven teams to include an empty assert statement so that the test shows up and is counted in the code metrics. However, this would be relevant only if you re looking at code coverage as a measure of project success and, as we hope you ll agree after reading this book, such metrics are entirely spurious (and at worst misleading). It s rather like measuring productivity by the number of lines of code written rather than something more meaningful, like the number of use cases/user stories completed, or whether the customer is smiling or frowning.
ANSI/AIM Code 39 Scanner In C#.NET
Using Barcode reader for VS .NET Control to read, scan read, scan image in .NET framework applications.
www.OnBarcode.com
Read Code 3/9 In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
We ve omitted the other three scenarios (allUpperCaseShouldFail(), nonNumericShouldFail(), and shortPasswordShouldFail()) as they each follow exactly the same pattern. The code to make these test scenarios pass is also pretty straightforward. Let s implement the required method on the Account class: public void validatePasswordSyntax(String password) throws AccountValidationException { if (password.toLowerCase().equals(password) || password.toUpperCase().equals(password))
Code 128C Encoder In .NET Framework
Using Barcode encoder for Reporting Service Control to generate, create Code 128 Code Set B image in Reporting Service applications.
www.OnBarcode.com
Code 128C Creator In None
Using Barcode creator for Online Control to generate, create Code128 image in Online applications.
www.OnBarcode.com
CHAPTER 3 HELLO WORLD! USING DDT
USS Code 39 Drawer In VB.NET
Using Barcode printer for VS .NET Control to generate, create Code 39 Extended image in .NET framework applications.
www.OnBarcode.com
Printing UCC-128 In Objective-C
Using Barcode drawer for iPhone Control to generate, create GTIN - 128 image in iPhone applications.
www.OnBarcode.com
} if (password.length() < 6) { throw new AccountValidationException( "Password must be at least 6 characters long"); } if (!containsAtLeastOneDigit(password)) { throw new AccountValidationException( "Password must contain at least 1 numeric digit"); }
Barcode Maker In None
Using Barcode generation for Microsoft Word Control to generate, create Barcode image in Office Word applications.
www.OnBarcode.com
EAN / UCC - 13 Creation In Visual Studio .NET
Using Barcode generator for Reporting Service Control to generate, create USS-128 image in Reporting Service applications.
www.OnBarcode.com
throw new AccountValidationException( "Password must be a mixture of upper and lower case");
Create Code 39 In Objective-C
Using Barcode generation for iPad Control to generate, create Code 39 image in iPad applications.
www.OnBarcode.com
Barcode Decoder In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
www.OnBarcode.com
static boolean containsAtLeastOneDigit(String password) { for (char ch : password.toCharArray()) { if (Character.isDigit(ch)) return true; } return false; } We could go on, but we hope you get the general idea. Filling in the test methods is a breeze, as the design work has been done so the required fixtures are obvious, and the inputs/acceptance criteria are right there above each test method. Similarly, the coding is pretty much a slam-dunk because the hard thinking went into the detailed design, and all the rainy day scenarios were thought through in detail. The result is nicely factored code that s easily unit-tested, with tests in all the right places, and in which design churn (where supposedly finished code is rewritten to make way for new functionality) is kept to a minimum.
Barcode Generation In .NET
Using Barcode drawer for Reporting Service Control to generate, create Barcode image in Reporting Service applications.
www.OnBarcode.com
Code 128 Code Set A Decoder In C#
Using Barcode decoder for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
www.OnBarcode.com
Summary
This brings us to the end of Part 1, in which we ve compared and contrasted DDT with its inverse counterpart, TDD. 2 took us through the looking glass to implement the Login use case using TDD. In this chapter, we ve applied up-front design principles along with DDT to the problem, and we ve delivered a tested and documented login function. Figure 3 20 contrasts the difference between what we ve achieved in 2 and in this chapter.
Copyright © OnBarcode.com . All rights reserved.