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Fundamental testing methodologies applied to the popular Python language Testing Python; Applying Unit Testing, TDD, BDD and Acceptance Testing is the most comprehensive book available on testing for one of the top software programming languages in the world. Python is a natural choice for new and experienced developers, and this hands-on resource is a much needed guide to enterprise-level testing development methodologies. The book will show you why Unit Testing and TDD can lead to cleaner, more flexible programs. Unit Testing and Test-Driven Development (TDD) are increasingly must-have…mehr
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- Produktdetails
- Verlag: John Wiley & Sons
- Seitenzahl: 240
- Erscheinungstermin: 3. Juli 2014
- Englisch
- ISBN-13: 9781118901250
- Artikelnr.: 41141877
- Verlag: John Wiley & Sons
- Seitenzahl: 240
- Erscheinungstermin: 3. Juli 2014
- Englisch
- ISBN-13: 9781118901250
- Artikelnr.: 41141877
Fundamentals and Best Practices 7 Python Installation 8 Linux 8 Mac 8
Windows 8 Pip 9 Virtualenv 9 Source Control (SVN, Git) 10 Interactive
Development Environment (IDE) 11 Summary 12 CHAPTER 2 Writing Unit Tests 15
What Is Unit Testing? 15 What Should You Test? 17 Writing Your First Unit
Test 17 Checking Values with the assertEquals Method 18 Checking Exception
Handling with assertRaises 20 Following the PEP-8 Standard 22 Unit Test
Structure 23 Additional Unit Test Examples 24 Getting Clever with
assertRaises 24 Making Your Life Easier with setUp 25 Useful Methods in
Unit Testing 27 assertEqual(x, y, msg=None) 27 assertAlmostEqual(x, y,
places=None, msg=None, delta=None) 27 assertRaises(exception, method,
arguments, msg=None) 28 assertDictContainsSubset(expected, actual,
msg=None) 28 assertDictEqual(d1, d2, msg=None) 28 assertTrue(expr,
msg=None) 28 assertFalse(expr, msg=None) 29 assertGreater(a, b, msg=None)
29 assertGreaterEqual(a, b, msg=None) 29 assertIn(member, container,
msg=None) 30 assertIs(expr1, expr2) 30 assertIsInstance(obj, class,
msg=None) 30 assertNotIsInstance(obj, class, msg=None) 30 assertIsNone(obj,
msg=None) 30 assertIsNot(expr1, expr2, msg=None) 31 assertIsNotNone(obj,
msg=None) 31 assertLess(a, b, msg=None) 31 assertLessEqual(a, b, msg=None)
31 assertItemsEqual(a, b, msg=None) 31 assertRaises(excClass, callableObj,
*args, **kwargs, msg=None) 32 Summary 32 CHAPTER 3 Utilizing Unit Test
Tools 33 Using Python's Nose 33 Installing Nose 34 Using Nose's Best
Features 35 Running Specifi c Test Files 35 Getting More Detail with
Verbose 35 Debugging Support with PDB 36 Checking Your Coverage 38 Coloring
your tests with Rednose 39 PyTest: An Alternative Test Runner 40 Installing
PyTest 40 PyTest's Best Features 41 Running Specifi c Tests 41 Viewing
Detail with Verbose and Summary 42 Debugging with PDB 43 Checking Your
Coverage with PyTest 45 Choosing Between Nose and PyTest 46 Mock and Patch
Tricky Situations 46 Installing the Mock Library 47 Mocking a Class and
Method Response 47 When Mock Won't Do, Patch! 50 The Requests Library 50
Patch in Action 50 Advanced Mocking 52 Summary 53 CHAPTER 4 Writing
Testable Documentation 55 Writing Your First Doctest 56 Th e Python Shell
56 Adding Doctests to a Method 57 Running Your Doctests 58 Handling Error
Cases 59 Advanced Doctest Usage 61 Improving Doctests with Nose Integration
62 Summary 65 Resources 65 CHAPTER 5 Driving Your Development with Tests 67
Agile Development 67 Adopting the Agile Process Now 68 Ethos of Test Driven
Development 70 Advantages of Test Driven Development 72 Ping-Pong
Programming 72 Test Driving Your Problem 73 Writing Your Failing Test 74
Making Your Test Pass 75 Driving More Features with Tests 75 Wrapping Up
the Task 77 Summary 82 Resources 83 CHAPTER 6 Writing Acceptance Tests 85
What Is Acceptance Testing? 85 Anatomy of an Acceptance Test 87 Using
Gherkin Syntax 87 Th e Magic Is in the Step File 88 Goals of Acceptance
Testing 89 Implementing Developer and QA Collaboration 90 Letting Behavior
Drive Your Problem 90 Writing Your Failing Acceptance Test 90 Defining Your
Steps 92 Implementing Your Code 94 Developing More of the Feature 95
bank_apppy 96 indexhtml 97 Delivering the Finished Article 98 Advanced
Acceptance Test Techniques 102 Scenario Outline 102 Tables of Data in
Scenarios 103 Summary 104 Resources 105 CHAPTER 7 Utilizing Acceptance Test
Tools 107 Cucumber: The Acceptance Test Standard 107 Lettuce in Detail 108
Tagging 108 Fail Fast 112 Nosetest Integration 114 Robot: An Alternative
Test Framework 115 Installing Robot 116 Writing a Test Case 116
Implementing Keywords 117 Running Robot Tests 119 Summary 123 Resources 123
CHAPTER 8 Maximizing Your Code's Performance 125 Understanding the
Importance of Performance Testing 126 JMeter and Python 126 Installation
127 Configuring Your Test Plans 128 Utilizing Your Test Plans Effectively
135 Code Profiling with cProfile 135 Run a cProfile Session 136 Analyzing
the cProfile Output 142 Summary 144 Resources 144 CHAPTER 9 Looking After
Your Lint 145 Coming to Grips with Pylint 146 Installing Pylint 146 Using
Pylint 146 Understanding the Pylint Report 149 The Module Block 149 The
Messages by Category Section 149 The Messages Section 150 The Code
Evaluation Score 150 The Raw Metrics Section 150 The Statistics by Type
Section 150 Customizing Pylint's Output 150 Telling Pylint to Ignore Errors
153 Covering All Your Code with Unit Tests 154 Installing Coverage 155
Using Coverage 155 Advanced Coverage Options 157 Producing an HTML/XML
Report 157 Setting a Minimum Coverage Threshold 159 Restricting Coverage to
a Specific Package 159 Ignoring Coverage 160 Summary 161 Resources 162
CHAPTER 10 Automating Your Processes 163 Build Paver Tasks 164 Installing
Paver 164 Creating a Paver Task 164 Executing Paver Tasks 165 Defi ning a
Default Build 166 Setting Up Automated Builds 168 Installing Jenkins 169
Adding Coverage and PyLint Reports 175 Generating a PyLint Report 175
Generating a Coverage Report 176 Making Your Build Status Highly Visible
176 Summary 181 Resources 181 CHAPTER 11 Deploying Your Application 183
Deploying Your Application to Production 184 Creating a Deployable Artifact
185 Defining the Paver Tasks 185 Incorporating Packaging into the Build 187
Enabling Archiving on Jenkins 188 QA Environment 189 Implementing Stage and
Production Environments 190 Implementing a Cloud Deployment 191 Creating a
Heroku Account 192 Creating a Small Application 193 Setting up Git for
Heroku 193 Deploying the Application to Heroku 194 Smoke Testing a Deployed
Application 195 Example Application Stack 196 Smoke Test Scenarios 197
Implementing Smoke Tests 198 Summary 200 Resources 201 CHAPTER 12 The
Future of Testing Python 203 Stub the Solution 203 Making Deployment
Natural 205 Automating (Nearly) Everything 206 Working in Public 207
Collaborating on Step Definitions 208 Final Thoughts 209 Resources 210
Index 211
Fundamentals and Best Practices 7 Python Installation 8 Linux 8 Mac 8
Windows 8 Pip 9 Virtualenv 9 Source Control (SVN, Git) 10 Interactive
Development Environment (IDE) 11 Summary 12 CHAPTER 2 Writing Unit Tests 15
What Is Unit Testing? 15 What Should You Test? 17 Writing Your First Unit
Test 17 Checking Values with the assertEquals Method 18 Checking Exception
Handling with assertRaises 20 Following the PEP-8 Standard 22 Unit Test
Structure 23 Additional Unit Test Examples 24 Getting Clever with
assertRaises 24 Making Your Life Easier with setUp 25 Useful Methods in
Unit Testing 27 assertEqual(x, y, msg=None) 27 assertAlmostEqual(x, y,
places=None, msg=None, delta=None) 27 assertRaises(exception, method,
arguments, msg=None) 28 assertDictContainsSubset(expected, actual,
msg=None) 28 assertDictEqual(d1, d2, msg=None) 28 assertTrue(expr,
msg=None) 28 assertFalse(expr, msg=None) 29 assertGreater(a, b, msg=None)
29 assertGreaterEqual(a, b, msg=None) 29 assertIn(member, container,
msg=None) 30 assertIs(expr1, expr2) 30 assertIsInstance(obj, class,
msg=None) 30 assertNotIsInstance(obj, class, msg=None) 30 assertIsNone(obj,
msg=None) 30 assertIsNot(expr1, expr2, msg=None) 31 assertIsNotNone(obj,
msg=None) 31 assertLess(a, b, msg=None) 31 assertLessEqual(a, b, msg=None)
31 assertItemsEqual(a, b, msg=None) 31 assertRaises(excClass, callableObj,
*args, **kwargs, msg=None) 32 Summary 32 CHAPTER 3 Utilizing Unit Test
Tools 33 Using Python's Nose 33 Installing Nose 34 Using Nose's Best
Features 35 Running Specifi c Test Files 35 Getting More Detail with
Verbose 35 Debugging Support with PDB 36 Checking Your Coverage 38 Coloring
your tests with Rednose 39 PyTest: An Alternative Test Runner 40 Installing
PyTest 40 PyTest's Best Features 41 Running Specifi c Tests 41 Viewing
Detail with Verbose and Summary 42 Debugging with PDB 43 Checking Your
Coverage with PyTest 45 Choosing Between Nose and PyTest 46 Mock and Patch
Tricky Situations 46 Installing the Mock Library 47 Mocking a Class and
Method Response 47 When Mock Won't Do, Patch! 50 The Requests Library 50
Patch in Action 50 Advanced Mocking 52 Summary 53 CHAPTER 4 Writing
Testable Documentation 55 Writing Your First Doctest 56 Th e Python Shell
56 Adding Doctests to a Method 57 Running Your Doctests 58 Handling Error
Cases 59 Advanced Doctest Usage 61 Improving Doctests with Nose Integration
62 Summary 65 Resources 65 CHAPTER 5 Driving Your Development with Tests 67
Agile Development 67 Adopting the Agile Process Now 68 Ethos of Test Driven
Development 70 Advantages of Test Driven Development 72 Ping-Pong
Programming 72 Test Driving Your Problem 73 Writing Your Failing Test 74
Making Your Test Pass 75 Driving More Features with Tests 75 Wrapping Up
the Task 77 Summary 82 Resources 83 CHAPTER 6 Writing Acceptance Tests 85
What Is Acceptance Testing? 85 Anatomy of an Acceptance Test 87 Using
Gherkin Syntax 87 Th e Magic Is in the Step File 88 Goals of Acceptance
Testing 89 Implementing Developer and QA Collaboration 90 Letting Behavior
Drive Your Problem 90 Writing Your Failing Acceptance Test 90 Defining Your
Steps 92 Implementing Your Code 94 Developing More of the Feature 95
bank_apppy 96 indexhtml 97 Delivering the Finished Article 98 Advanced
Acceptance Test Techniques 102 Scenario Outline 102 Tables of Data in
Scenarios 103 Summary 104 Resources 105 CHAPTER 7 Utilizing Acceptance Test
Tools 107 Cucumber: The Acceptance Test Standard 107 Lettuce in Detail 108
Tagging 108 Fail Fast 112 Nosetest Integration 114 Robot: An Alternative
Test Framework 115 Installing Robot 116 Writing a Test Case 116
Implementing Keywords 117 Running Robot Tests 119 Summary 123 Resources 123
CHAPTER 8 Maximizing Your Code's Performance 125 Understanding the
Importance of Performance Testing 126 JMeter and Python 126 Installation
127 Configuring Your Test Plans 128 Utilizing Your Test Plans Effectively
135 Code Profiling with cProfile 135 Run a cProfile Session 136 Analyzing
the cProfile Output 142 Summary 144 Resources 144 CHAPTER 9 Looking After
Your Lint 145 Coming to Grips with Pylint 146 Installing Pylint 146 Using
Pylint 146 Understanding the Pylint Report 149 The Module Block 149 The
Messages by Category Section 149 The Messages Section 150 The Code
Evaluation Score 150 The Raw Metrics Section 150 The Statistics by Type
Section 150 Customizing Pylint's Output 150 Telling Pylint to Ignore Errors
153 Covering All Your Code with Unit Tests 154 Installing Coverage 155
Using Coverage 155 Advanced Coverage Options 157 Producing an HTML/XML
Report 157 Setting a Minimum Coverage Threshold 159 Restricting Coverage to
a Specific Package 159 Ignoring Coverage 160 Summary 161 Resources 162
CHAPTER 10 Automating Your Processes 163 Build Paver Tasks 164 Installing
Paver 164 Creating a Paver Task 164 Executing Paver Tasks 165 Defi ning a
Default Build 166 Setting Up Automated Builds 168 Installing Jenkins 169
Adding Coverage and PyLint Reports 175 Generating a PyLint Report 175
Generating a Coverage Report 176 Making Your Build Status Highly Visible
176 Summary 181 Resources 181 CHAPTER 11 Deploying Your Application 183
Deploying Your Application to Production 184 Creating a Deployable Artifact
185 Defining the Paver Tasks 185 Incorporating Packaging into the Build 187
Enabling Archiving on Jenkins 188 QA Environment 189 Implementing Stage and
Production Environments 190 Implementing a Cloud Deployment 191 Creating a
Heroku Account 192 Creating a Small Application 193 Setting up Git for
Heroku 193 Deploying the Application to Heroku 194 Smoke Testing a Deployed
Application 195 Example Application Stack 196 Smoke Test Scenarios 197
Implementing Smoke Tests 198 Summary 200 Resources 201 CHAPTER 12 The
Future of Testing Python 203 Stub the Solution 203 Making Deployment
Natural 205 Automating (Nearly) Everything 206 Working in Public 207
Collaborating on Step Definitions 208 Final Thoughts 209 Resources 210
Index 211