1. Selenium HP Web Test Tool Training
Portnov Computer School
Selenium HP Web Test Tool Training
Test Automation For Web-Based Applications
Presenter: Ellie Skobel

2. Day 1
Unittest Basics

3. Unittest A Python language version of JUnit Also referred to as PyUnit
xUnit frameworks are available for: ASP, C++, C#, Eiffel, Delphi, Perl, PHP, Python, REBOL, Smalltalk, and
Visual Basic
A Python language version of JUnit
Also referred to as PyUnit
Created in 1997 by Erich Gamma and Kent Beck
Erich Gamma - well known as one of the “Gang of Four” who gave us the now classic Design Patterns book.
Kent Beck is equally well known for his groundbreaking work in the software discipline known as Extreme Programming
The underlying testing model (xUnit) is on its way to becoming the standard framework for any language.

4. Framework A semi-complete application.
Provides a reusable, common structure that can be shared between applications.
Developers incorporate the framework into their own application and extend it to meet their specific needs.
Differs from toolkits by providing a coherent structure, rather than a simple set of utility classes.

5. Unit Test Examines the behavior of a distinct unit of work
A unit of work is a task that is not directly dependent on the completion of any other task.
In a Unit Testing framework:
Each unit test must run independently of all other unit tests.
Errors must be detected and reported test by test.
It must be easy to define which unit tests will run.

6. Unittest Features test fixture test case test suite test runner
preparation needed to perform one or more tests,
any associate cleanup
test case
smallest unit of testing. It checks for a specific response to a particular set of inputs
unittest provides a base class, TestCase, which may be used to create new test cases
test suite
collection of test cases, test suites, or both
used to aggregate tests that should be executed together
test runner
component which executes tests and reports the result.

7. Creating Test Cases
A test case is created by sub-classing unittest.TestCase
Individual tests are defined with method names that start with the letters 'test'.
This naming convention informs the test runner about which methods represent tests.
class AutoSuggest is a subclass of unittest.TestCase
Name of a method which defines a testcase, starts with 'test'

8. setUp() and tearDown() methods are for preperation and cleanup
Writing a Test Cases
The setUp() and tearDown() methods allow you to define instructions that will be executed before and after each test method.
Individual tests are defined with method names that start with the letters 'test'
Each test uses TestCase assert* methods to check for an expected result.
assertEqual()
assertTrue()
assertFalse()
etc.
setUp() and tearDown() methods are for preperation and cleanup
assert* methods are used to verify actual outcome against expected result

9. Assert Methods Method Checks that assertEqual(a, b) a == b
assertNotEqual(a, b)
a != b
assertTrue(x)
bool(x) is True
assertFalse(x)
bool(x) is False
assertIs(a, b)
a is b
assertIsNot(a, b)
a is not b
assertIsNone(x)
x is None
assertIsNotNone(x)
x is not None
assertIn(a, b)
a in b
assertNotIn(a, b)
a not in b
assertIsInstance(a, b)
isinstance(a, b)
assertNotIsInstance(a, b)
not isinstance(a, b)
assertRaises(exception)
Method
Checks that
assertAlmostEqual(a, b)
round(a-b, 7) == 0
assertNotAlmostEqual(a, b)
round(a-b, 7) != 0
assertGreater(a, b)
a > b
assertGreaterEqual(a, b)
a >= b
assertLess(a, b)
a < b
assertLessEqual(a, b)
a <= b
assertRegexpMatches(s, r)
r.search(s)
assertNotRegexpMatches(s, r)
not r.search(s)
assertItemsEqual(a, b)
sorted(a) == sorted(b) and
works with unhashable objs
assertDictContainsSubset(a, b)
all the key/value pairs in a
exist in b
assertMultiLineEqual(a, b)
strings
assertSequenceEqual(a, b)
sequences
assertListEqual(a, b)
lists
assertTupleEqual(a, b)
tuples
assertSetEqual(a, b)
sets or frozensets
assertDictEqual(a, b)
dicts

10. Definitions TestCase: class that extends the unittest.TestCase class.
Contains one or more tests represented by testXXX methods.
Used to group together tests that exercise common behaviors.
TestSuite - an aggregation of individual tests cases and test suites
A convenient way to group together tests that are related.

11. Creating TestSuite Instantiate a new TestSuite object()
my_suite = unittest.TestSuite()
Import your TestCase class
from tests.MyTestCase import MyTestCase
Add a test from the TestCase to your suite
my_suite.addTest(MyTestCase("test_something"))
Add all tests from the TestCase to a suite
my_suite.addTest(unittest.makeSuite(MyTestCase))
Add another suite to your suite
my_suite.addTest(another_suite) OR
my_suite.addTest(MyTestSuite.suite())