1. Boost &
googletest
Will Shen
2011/10/17

2. Outline
Boost
• Smart pointer
• Assign
• oreach
• bind
googletest
• Simple tests
• Assertions
2

3. Hundred of boost libraries
hpp
hpp
hpp + lib
hpp + lib
(.h+.cpp)
(.h+.cpp)
up to 90% without linking date_time
filesystem
regex
program_otpions
test
thread
python
3

4. Memory Leaking
Cause of Evil - new/delete
4

5. boost – Smart pointer
Cause of Evil - new/delete
Managing memory in a smart way
• std::auto_ptr  Ownership
• boost::scoped_ptr  Non-copyable
• boost:: shared_ptr  Reference counting
5

6. Stack and Heap
Using Stack variable to manage Heap
memory
p1
Proxy fun()
…
stack heap
6

7. Different smart pointers
Ownership, Non-copyable, Reference counting
ap1 ap1
ap2 ap2
shp1 shp1
shp2 shp2
7

8. Used in STL Container
Both auto_ptr and scoped_ptr can not
be used in STL container.
vec[0 vec[0
] e
]
vec[1 vec[1
] ]
vec[2 vec[2
] ]
8

9. scoped_array and shared_array
operator[]
9

10. boost::assign – filling containers with data
operator+=(), operator,()
operator()()
10

11. boost::assign
list_of - to initialize a container
repeat, repeat_fun, range
11

12. boost::foreach
BOOST_FOREACH, BOOST_REVERSE_FOREACH
Supported Sequence Type
• STL containers
• arrays
• Null-terminated strings (char and wchar_t)
• std::pair of iterators
12

13. boost::foreach + typeof
BOOST_TYPEOF
13

14. boost::bind
A generalization of the standard functions std::bind1st and
std::bind2nd.
Supports: function objects, functions, function pointers, and
member function pointers
Able to bind any argument to a specific value or route input
arguments into arbitrary positions.
Function object
14

15. boost::bind - place holders
_1, _2, …, _9
15

16. Use boost::bind() in STL algorithm
binding member function
16

17. googletest - Unit Testing Framework
Execute test cases through the GUI
Google test framework
(gtest)
• Easy to execute
• Easy to implement test cases
“Unicode Debug-test” configuration Execute test cases in console
17

18. gtest is more lightweight than cppunit
Cppunit gtest
1. Write a test class derived from
TestFixture 1. One TEST macro
2. Write setup
3. Write teardown
4. Write test method
5. Define test suite
6. Context-switch between .h/.cpp
files
18

19. Basic concepts
Start by writing ASSERTIONS
• statements that check whether a condition is true.
• success, nonfatal failure, or fatal failure.
A test case contains one or many tests.
A test program can contain multiple test cases.
19

20. Assertions
Basic Assertions, Binary Comparison, String Comparison
20

21. To Write Simple Tests
Subject to be tested
21

22. Test Fixture - Using the Same Data
Configuration for Multiple Tests
SUT
Test
Fixture
Tests
22

23. gtest folder in GMapShop project
Tests
23

24. Recommended Books
24

25. Recommended Books
25

26. Recommended Books
26

27. Recommended Books
27

28. More to talk
Code Smell
Refactoring method
Principles of Object-oriented Design
• SRP, OCP, LSP, DSP, DIP
28