Unit Testing in Java

Encode GS1 - 12 in Java Unit Testing
Unit Testing
Make GS1 - 12 In Java
Using Barcode generation for Java Control to generate, create UPC Symbol image in Java applications.
Python Two of the most notable are nose (codegooglecom/p/python-nose), which aims to be more comprehensive and useful than the standard unittest module, while still being compatible with it, and pytest (codespeak net/py/dist/test/testhtml) this takes a somewhat different approach to unittest, and tries as much as possible to eliminate boilerplate test code Both of these third-party tools support test discovery, so there is no need to write an overarching test program since they will search for tests themselves This makes it easy to test an entire tree of code or just a part of the tree (eg, just those modules that have been worked on) For those serious about testing it is worth investigating both of these third-party modules (and any others that appeal), before deciding which testing tools to use Creating doctests is straightforward: We write the tests in the module, function, class, and methods docstrings, and for modules, we simply add three lines at the end of the module:
Drawing Bar Code In Java
Using Barcode generator for Java Control to generate, create bar code image in Java applications.
if __name__ == "__main__": import doctest doctesttestmod()
Bar Code Reader In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
If we want to use doctests inside programs, that is also possible For example, the blockspy program whose modules are covered later (in 14) has doctests for its functions, but it ends with this code:
UPC-A Supplement 5 Encoder In VS .NET
Using Barcode generator for ASP.NET Control to generate, create GTIN - 12 image in ASP.NET applications.
if __name__ == "__main__": main()
Making GS1 - 12 In Visual Studio .NET
Using Barcode creator for .NET framework Control to generate, create UPCA image in Visual Studio .NET applications.
This simply calls the program s main() function, and does not execute the program s doctests To exercise the program s doctests there are two approaches we can take One is to import the doctest module and then run the program for example, at the console, python3 -m doctest blockspy (on Windows, replacing python3 with something like C:\Python31\pythonexe) If all the tests run ne there is no output, so we might prefer to execute python3 -m doctest blockspy -v instead, since this will list every doctest that is executed, and provide a summary of results at the end Another way to execute doctests is to create a separate test program using the unittest module The unittest module is conceptually modeled on Java s JUnit unit testing library and is used to create test suites that contain test cases The unittest module can create test cases based on doctests, without having to know anything about what the program or module contains, apart from the fact that it has doctests So to make a test suite for the blockspy program, we can create the following simple program (which we have called test_blockspy):
Barcode Generator In Java
Using Barcode maker for Java Control to generate, create barcode image in Java applications.
import doctest import unittest import blocks
Data Matrix ECC200 Creator In Java
Using Barcode drawer for Java Control to generate, create Data Matrix ECC200 image in Java applications.
9 Debugging, Testing, and Pro ling
Paint GS1 128 In Java
Using Barcode printer for Java Control to generate, create EAN 128 image in Java applications.
suite = unittestTestSuite() suiteaddTest(doctestDocTestSuite(blocks)) runner = unittestTextTestRunner() print(runnerrun(suite))
Paint EAN-13 In Java
Using Barcode encoder for Java Control to generate, create EAN13 image in Java applications.
Note that there is an implicit restriction on the names of our programs if we take this approach: They must have names that are valid module names, so a program called convert-incidentspy cannot have a test like this written for it because import convert-incidents is not valid since hyphens are not legal in Python identi ers (It is possible to get around this, but the easiest solution is to use program lenames that are also valid module names, for example, replacing hyphens with underscores) The structure shown here create a test suite, add one or more test cases or test suites, run the overarching test suite, and output the results is typical of unittest-based tests When run, this particular example produces the following output:
Code 128A Generator In Java
Using Barcode generation for Java Control to generate, create ANSI/AIM Code 128 image in Java applications.
---------------------------------------------------------------------Ran 3 tests in 0244s OK <unittest_TextTestResult run=3 errors=0 failures=0>
UPC E Creator In Java
Using Barcode encoder for Java Control to generate, create UPC E image in Java applications.
Each time a test case is executed a period is output (hence the three periods at the beginning of the output), then a line of hyphens, and then the test summary (Naturally, there is a lot more output if any tests fail) If we are making the effort to have separate tests (typically one for each program and module we want to test), then rather than using doctests we might prefer to directly use the unittest module s features especially if we are used to the JUnit approach to testing The unittest module keeps our tests separate from our code this is particularly useful for larger projects where test writers and developers are not necessarily the same people Also, unittest unit tests are written as stand-alone Python modules, so they are not limited by what we can comfortably and sensibly write inside a docstring The unittest module de nes four key concepts A test xture is the term used to describe the code necessary to set up a test (and to tear it down, that is, clean up, afterward) Typical examples are creating an input le for the test to use and at the end deleting the input le and the resultant output le A test suite is a collection of test cases and a test case is the basic unit of testing test suites are collections of test cases or of other test suites we ll see practical examples of these shortly A test runner is an object that executes one or more test suites
GTIN - 13 Drawer In .NET
Using Barcode encoder for .NET framework Control to generate, create UPC - 13 image in .NET framework applications.
ANSI/AIM Code 39 Recognizer In .NET Framework
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
Bar Code Drawer In Visual Studio .NET
Using Barcode printer for ASP.NET Control to generate, create bar code image in ASP.NET applications.
Create ECC200 In Visual C#.NET
Using Barcode encoder for .NET framework Control to generate, create Data Matrix 2d barcode image in .NET framework applications.
Drawing Code 39 Extended In VB.NET
Using Barcode maker for .NET Control to generate, create Code 39 image in VS .NET applications.