# fixed typo

[ccunit/ccunit.git] / doc / cookbook.dox

/* -*- Indented-Text -*- */
/* $Id$ */
/**
@english
@page cookbook CCUnit Cookbook
@japanese
@page cookbook CCUnit ¥¯¥Ã¥¯¥Ö¥Ã¥¯
@endif

@~english
Here is a short cookbook to help you get started.
@~japanese
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Íý²ò¤Î½õ¤±¤È¤Ê¤ë¤è¤¦¤Êû¤¤¥¯¥Ã¥¯¥Ö¥Ã¥¯¤Ç¤¹¡£
@~
@english
[see also <a href="../ja/cookbook.html">Japanese</a> documents]
@japanese
[see also <a href="../../cookbook.html">English</a> documents]
@endif

@english
@section simple_test_case Simple Test Case
@japanese
@section simple_test_case ¥·¥ó¥×¥ë¤Ê¥Æ¥¹¥È¥±¡¼¥¹
@endif

@~english
Tests in <b>CCUnit</b> can be run automatically.  They are
easy to set up and once you have written them, they are
always there to help you keep confidence in the quality of
your code.
@~japanese
CCUnit¤ò»È¤Ã¤¿¥Æ¥¹¥È¤Ï¼«Æ°Åª¤Ë¼Â¹Ô¤¹¤ë¤³¤È¤¬¤Ç¤­¤Þ¤¹¡£
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@~

@~english
To make a simple test, here is what you do:
@~japanese
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@~

<ol>
<li> @~english Create a test function
     @~japanese ¥Æ¥¹¥È´Ø¿ô¤òºî¤ë</li>
<li> @~english When you want to check a value, call
     @~japanese Ãͤò¥Á¥§¥Ã¥¯¤·¤¿¤¤¾ì¹ç¤Ï¡¢@~
     @link CCUNIT_ASSERT() CCUNIT_ASSERT(bool) @endlink
     @~english and pass a bool that is true if the test succeeds
     @~japanese ¤ò¸Æ¤Ó½Ð¤·¤Æ¡¢
     ¤â¤·¥Æ¥¹¥È¤¬À®¸ù¤¹¤ë¤Î¤Ç¤¢¤ì¤Ð¿¿¤òÊÖ¤¹¤è¤¦¤Ê¿¿µ¶ÃͤòÅϤ·¤Þ¤¹</li>
</ol>

@~english
For example, to test that the sum of two complex number
which is the sum of the values of two complex numbers,
write:
@~japanese
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Æó¤Ä¤ÎÊ£ÁÇ¿ô¤ÎÃͤò²Ã»»¤·¤¿ÃͤÈƱ¤¸¤Ç¤¢¤ë¤³¤È¤ò¥Æ¥¹¥È¤¹¤ë¤È¤·¤Þ¤¹¡£
@~

@code
void test_complex_add ()
{
  complex_t c10_1 = { 10.0, 1.0 };
  complex_t c1_1 = { 1.0, 1.0 };
  complex_t result;
  complex_t c11_2 = { 11.0, 2.0 };
  CCUNIT_ASSERT (complex_equals (&c11_2, complex_add (&result, c10_1, c1_1)));
}
@endcode

@~english
That was a very simple test. Ordinarily, you'll have many
little test cases that you'll want to run on the same set of
objects. To do this, use a fixture.
@~japanese
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@~

@english
@section fixture Fixture
@japanese
@section fixture ¥Õ¥£¥¯¥¹¥Á¥ã
@endif

@~english
What if you have two or more tests that operate on the same
similar set of objects?
@~japanese
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@~

@~english
Tests need to run against the background of a known set of
objects. This set of objects is called a test fixture. When
you are writing tests you will often find that you spend
more time writing the code to set up the fixture than you do
in actually testing values.
@~japanese
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@~

@~english
Often, you will be able to use the same fixture for several
different tests. Each case will send slightly different
messages or parameters to the fixture and will check for
different results.
@~japanese
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@~

@~english
When you have a common fixture, here is what you do:
@~japanese
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¤Þ¤¹¡£
@~

<ol>
<li>@~english
    Create a @link CCUnitTestCase TestCase @endlink object
    @~japanese
    @link CCUnitTestCase TestCase @endlink ¹½Â¤ÂΤ˥á¥â¥ê¤ò³ä¤êÅö¤Æ¤Þ¤¹
    ¡Ê°Ê¹ß¡¢¹½Â¤ÂΤ˳ä¤êÅö¤Æ¤¿¥á¥â¥ê¤ò¡¢¥ª¥Ö¥¸¥§¥¯¥È¤È¸Æ¤Ö¤³¤È¤Ë¤·¤Þ¤¹¡Ë
</li>
<li>@~english
    Add an global variable for each part of the fixture
    @~japanese
    ¥Õ¥£¥¯¥¹¥Á¥ã¤Î¤½¤ì¤¾¤ì¤ÎÉôʬ¤ËÂç°èÊÑ¿ô¤òÄɲä·¤Þ¤¹
</li>
<li>@~english
    Write <code>setUp()</code> function to initialize the valiables
    @~japanese
    <code>setUp()</code> ´Ø¿ô¤ò½ñ¤¤¤ÆÊÑ¿ô¤ò½é´ü²½¤·¤Þ¤¹
</li>
<li>@~english
    Write <code>tearDown()</code> to release any permanent
    resources you allocated in <code>setUp</code>
    @~japanese
    <code>tearDown()</code> ´Ø¿ô¤ò½ñ¤¤¤Æ<code>setUp</code>
    ¤Ç³ä¤êÅö¤Æ¤¿±Ê³Ū¥ê¥½¡¼¥¹¤ò²òÊü¤·¤Þ¤¹
</li>
<li>@~english
    Create a @link CCUnitTestFixture TestFixture @endlink object
    @~japanese
    @link CCUnitTestFixture CCUnitTestFixture @endlink
    ¹½Â¤ÂΤ˥á¥â¥ê¤ò³ä¤êÅö¤Æ¤Þ¤¹
</li>
<li>@~english
    Add @link CCUnitTestCase TestCase @endlink objects to fixture object
    @~japanese
    @link CCUnitTestCase TestCase @endlink ¥ª¥Ö¥¸¥§¥¯¥È¤ò
    @link CCUnitTestFixture TestFixture @endlink
    ¥Õ¥£¥¯¥¹¥Á¥ã¥ª¥Ö¥¸¥§¥¯¥È¤ËÅÐÏ¿¤·¤Þ¤¹¡£
</li>
</ol>

@~english
For example, to write several test cases, first create a
fixture:
@~japanese
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ºÇ½é¤Ë¥Õ¥£¥¯¥¹¥Á¥ã¤òºîÀ®¤·¤Þ¤¹¡£
@~

@code
//** TEST CASE: complex number test *\/

#include "complex.h"

static complex_t* s10_1;
static complex_t* s1_1;
static complex_t* s11_2;

void setUp_ComplexTest ()
{
  s10_1 = complex_new (10, 1);
  s1_1 = complex_new (1, 1);
  s11_2 = complex_new (11, 2);
}

void tearDown_ComplexTest ()
{
  complex_delete (s10_1);
  complex_delete (s1_1);
  complex_delete (s11_2);
}

...

  CCUnitTestFixture* fixture;
  fixture = ccunit_newTestFixture ("ComplexTest",
                                   CCUNIT_NEWTESTFUNC(setUp_ComplexTest),
                                   CCUNIT_NEWTESTFUNC(tearDown_ComplexTest));
@endcode

@~english
Once you have the Fixture in place, you can write as complex
Test Cases as you'd like.
@~japanese
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@~

@english
@section test_case Test Case
@japanese
@section test_case ¥Æ¥¹¥È¥±¡¼¥¹
@endif

@~english
How do you write and invoke an individual test case when you
have a Fixture?
@~japanese
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¤É¤¦¤ä¤Ã¤Æ¸Ä¡¹¤Î¥Æ¥¹¥È¥±¡¼¥¹¤ò½ñ¤¤¤Æ¼Â¹Ô¤¹¤ì¤ÐÎɤ¤¤Ç¤·¤ç¤¦¤«¡£
@~

@~english
For example, to test the equality of two complex number,
write:
@~japanese
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¼¡¤Î¤è¤¦¤Ë½ñ¤­¤Þ¤¹¡£
@~

@code
void test_complex_equals ()
{
  CCUNIT_ASSERT_TEST_OBJ (s10_1, complex_equals, s10_1, complex_to_string);
  CCUNIT_ASSERT_TEST_OBJ (s10_1, !complex_equals, s1_1, complex_to_string);
}

...

  ccunit_addNewTestCase (fixture,
                         "test_complex_equals",
                         "complex equals test",
                         test_complex_equals);
@endcode

@~english
One may create and run objects for each test case like this:
@~japanese
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¥Õ¥£¥¯¥¹¥Á¥ã¤òºîÀ®¤·¤Æ¤½¤ì¤¾¤ì¤Î¥Æ¥¹¥È¥±¡¼¥¹¤ò¼Â¹Ô¤µ¤»¤ë¤³¤È
¤¬¤Ç¤­¤Þ¤¹¡£
@~

@code
  CCUnitTestResult* result;
  result = ccunit_runTestFixture (fixture);
@endcode

@~english
When the test fixture is run, that specific test functions
will be run.  This is not a useful thing to do, however, as
no diagnostics will be displayed.  One will normally use a
@link ExecutingTest TestRunner @endlink (see below) to
display the results.
@~japanese
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Ä̾ï¤Ï @link ExecutingTest TestRunner @endlink
(@ref test_runner ¸å½Ò)
¤Ç·ë²Ì¤òɽ¼¨¤·¤Þ¤¹¡£

@~english
Once you have several tests, organize them into a suite.
@~japanese
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¤½¤ì¤é¤ò¥¹¥¤¡¼¥È¤ËÀ°Íý¤·¤Þ¤¹¡£

@english
@section suite Suite
@japanese
@section suite ¥¹¥¤¡¼¥È
@endif

@~english
How do you set up your tests so that you can run them all at once?
@~japanese
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@~

@~english
%CCUnit provides a @link CCUnitTestSuite TestSuite @endlink
module that runs any number of TestCases together.
@~japanese
CCUnit ¤Ï¤¤¤¯¤Ä¤â¤Î @link CCUnitTestCase TestCases @endlink
¤ò°ì½ï¤Ë¼Â¹Ô¤¹¤ë
@link CCUnitTestSuite TestSuite @endlink ¥â¥¸¥å¡¼¥ë¤òÄ󶡤·¤Þ¤¹¡£
@~

@~english
You saw, above, how to run test fixture.
@~japanese
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@~

@~english
To create a suite of two or more tests, you do the following:
@~japanese
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@~

@code
CCUnitTestSuite* suite;
CCUnitTestFixture* fixture;
CCUnitTestResult* result;
suite = ccunit_newTestSuite ("Complex test suite");
fixture = ccunit_newTestFixture ("Complex Tests",
                                 CCUNIT_NEWTESTFUNC(setUp_complex_test),
                                 CCUNIT_NEWTESTFUNC(tearDown_complex_test));
ccunit_addNewTestCase (fixture, "test_complex_equals", "complex equals test",
                       test_complex_equals);
ccunit_addNewTestCase (fixture, "test_complex_add", "complex add test",
                       test_complex_add);
ccunit_addNewTestCase (fixture, "test_complex_sub", "complex sub test",
                       test_complex_sub);
ccunit_addTestFixture (suite, fixtuer);
result = ccunit_runTestSuite (suite, NULL);
@endcode

@~english
@link CCUnitTestSuite TestSuites @endlink don't only have to
contain @link CCUnitTestFixture TestFixtures @endlink.  They
can contain any object that implements the @link CCUnitTest
Test @endlink interface.  For example, you can create a
@link CCUnitTestSuite TestSuite @endlink in your code and I
can create one in mine, and we can run them together by
creating a @link CCUnitTestSuite TestSuite @endlink that
contains both:
@~japanese
@link CCUnitTestSuite TestSuites @endlink ¤Ï
@link CCUnitTestFixture TestFixtures @endlink
¤ò´Þ¤à¤À¤±¤Ç¤Ï¤¢¤ê¤Þ¤»¤ó¡£
¤½¤ì¤é¤Ï @link CCUnitTest Test @endlink
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Î㤨¤Ð¡¢¤¢¤Ê¤¿¤Ï¤¢¤Ê¤¿¤Î¥³¡¼¥É¤Ë@link CCUnitTestSuite TestSuite @endlink
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@~

@code
CCUnitTestSuite* suite;
CCUnitTestResult* result;
suite = ccunit_newTestSuite ("suite");
ccunit_addTestSuite (suite, complex_add_sub_suite ());
ccunit_addTestSuite (suite, complex_mul_div_suite ());
result = ccunit_runTestSuite(suite, NULL);
@endcode


@english
@section test_runner TestRunner
@japanese
@section test_runner ¥Æ¥¹¥È¥é¥ó¥Ê¡¼
@endif

@~english
How do you run your tests and collect their results?
@~japanese
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@~

@~english
Once you have a test suite, you'll want to run it. %CCUnit
provides tools to define the suite to be run and to display
its results.  You make your suite accessible to a @link
CreatingTestSuite ccunit_makeSuite @endlink tool that generate a
creating test suite code.
@~japanese
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CCUnit ¤Ï¥¹¥¤¡¼¥È¤ò¼Â¹Ô¤¹¤ë¤¿¤á¤ËÄêµÁ¤·¡¢
·ë²Ì¤òɽ¼¨¤¹¤ë¤¿¤á¤Î¥Ä¡¼¥ë¤òÄ󶡤·¤Þ¤¹¡£
¥¹¡¼¥Ä¤ò@link CreatingTestSuite ccunit_makeSuite @endlink
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@~

@~english
For example, to make a ComplexTest suite available to a
@link CreatingTestSuite ccunit_makeSuite @endlink,
excute the following tool to
ComplexTest.c:
@~japanese
Î㤨¤Ð¡¢ComplexTest ¥¹¥¤¡¼¥È¤ò
@link CreatingTestSuite ccunit_makeSuite @endlink
¤ò»È¤Ã¤Æ»ÈÍѤǤ­¤ë¤è¤¦¤Ë¤¹¤ë¤Ë¤Ï¡¢
°Ê²¼¤Î¥Ä¡¼¥ë¤ò ComplexTest.c ¤Ë¼Â¹Ô¤·¤Þ¤¹¡£
@~

@code
$ ccunit_makeSuite -f complex_suite -o suiteComplex.c ComplexTest.c
@endcode

@anchor test_runner_code
@~english
To use the TestRunner, include the header files for the tests in Main.c:
@~japanese
TestRunner ¤ò»ÈÍѤ¹¤ë¤Ë¤Ï¡¢
Main.c¤Ç¥Æ¥¹¥È¤Î¤¿¤á¤Î¥Õ¥¡¥¤¥ë¤Î¥Ø¥Ã¥À¤ò¥¤¥ó¥¯¥ë¡¼¥É¤·¤Þ¤¹¡£
@~

@code
#include <ccunit/CCUnitTestRunner.h>
#include <ccunit/CCUnitTestSuite.h>
@endcode

@~english
And call to
@link ccunit_runTestRunner()
ccunit_runTestRunner (CCUnitTestRunner*, CCUnitTestSuite *) @endlink
in the <code>main()</code> function:
@~japanese
¤½¤·¤Æ@link ccunit_runTestRunner()
ccunit_runTestRunner (CCUnitTestRunner*, CCUnitTestSuite *) @endlink
¤ò<code>main()</code>´Ø¿ô¤Ç¼Â¹Ô¤·¤Þ¤¹¡£
@~

@code
extern CCUnitTestSuite* complex_suite(const char* name);

int main( int argc, char **argv)
{
  CCUnitTestRunner* runner;
  CCUnitTestSuite* suite;
  runner = ccunit_newTestRunner (stdout);
  suite = complex_suite ("complex test suite");
  return ccunit_runTestRunner (runner, suite);
}
@endcode

@~english
The @link ExecutingTest TestRunner @endlink will run the tests.
If all the tests pass, you'll get an informative message.
If any fail, you'll get the following information:
@~japanese
@link ExecutingTest TestRunner @endlink ¤Ï¥Æ¥¹¥È¤ò¼Â¹Ô¤·¤Þ¤¹¡£
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@~

<ul>
<li>@~english
    The name of the source file that contains the test
    @~japanese
    ¥Æ¥¹¥È¤ò´Þ¤ó¤Ç¤¤¤ë¥½¡¼¥¹¥Õ¥¡¥¤¥ë̾
</li>
<li>@~english
    The line number where the failure occurred
    @~japanese
    ¼ºÇÔ¤¬µ¯¤³¤Ã¤¿¹ÔÈÖ¹æ
</li>
<li>@~english
    The name of the test case that failed
    @~japanese
    ¼ºÇÔ¤·¤¿¥Æ¥¹¥È¥±¡¼¥¹¤Î̾Á°
</li>
<li>@~english
    All of the text inside the call to
    <code>CCUNIT_ASSERT ()</code> which detected the failure
    @~japanese
    ¼ºÇÔ¤ò¸¡ÃΤ·¤¿<code>CCUNIT_ASSERT ()</code>¤¬¸Æ¤Ó½Ð¤µ¤ì¤¿»þ¤Î¾ò·ï¤Îʸ»úÎó¡£
</li>
</ul>

@english
@section helper_macros Helper Tool
@japanese
@section helper_macros ¥Ø¥ë¥Ñ¡¼¥Ä¡¼¥ë
@endif

@~english
As you might have noticed, implementing the <code>suite
()</code> function of fixture is a repetitive and error
prone task. A @ref CreatingTestSuite set of functions and
command have been created to automatically implements the
<code>suite()</code> function.
@~japanese
¤ªµ¤¤Å¤­¤Î¤è¤¦¤Ë¡¢¥Õ¥£¥¯¥¹¥Á¥ã¤Î <code>suite ()</code>´Ø¿ô¤ò¼ÂÁõ¤¹¤ë¤Î¤Ï¡¢
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@ref CreatingTestSuite ¤Î´Ø¿ô¤Î¥»¥Ã¥È¤È¥³¥Þ¥ó¥É¤Ï<code>suite ()</code>
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@dontinclude complex/testComplex.c

@~english
The following code is a rewrite of ComplexTest using those command:
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@~

@code
#include <cppunit/CCUnitAssert.h>
@endcode

@~english
First, you declare the fixture, passing the test fixture
name to the javaDoc style comment, which consist of a
C-style comment block starting with two <tt>*</tt>'s:
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@~

@code
//** test case: complex number test *\/
@endcode

@~english
The function to make @link CCUnitTestSuite TestSuite
@endlink is <code>ccunit_suite</code>.
But, it can be changed to another
name by the <code>-f</code> option of the
<code>ccunit_makeSuite</code> command, too.
Then, you define each test case of the fixture with prefix
<code>test</code>, <code>setUp</code>,
<code>tearDown</code>:

@~japanese
@link CCUnitTestSuite TestSuite @endlink
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<code>test</code>, <code>setUp</code>,
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@~

@code
#include <complex.h>

static complex_t* s10_1;
static complex_t* s1_1;
static complex_t* s11_2;

void setUp_complex_test ()
{
  s10_1 = complex_new (10, 1);
  s1_1 = complex_new (1, 1);
  s11_2 = complex_new (11, 2);
}

void tearDown_complex_test ()
{
  complex_delete (s10_1);
  complex_delete (s1_1);
  complex_delete (s11_2);
}

//** test equals *\/
void test_complex_equals ()
{
  CCUNIT_ASSERT_TEST_OBJ (s10_1, complex_equals, s10_1, complex_to_string);
  CCUNIT_ASSERT_TEST_OBJ (s10_1, !complex_equals, s1_1, complex_to_string);
}

//** test add *\/
void test_complex_add ()
{
  complex_t c10_1 = { 10.0, 1.0 };
  complex_t c1_1 = { 1.0, 1.0 };
  complex_t result;
  complex_t c11_2 = { 11.0, 2.0 };
  CCUNIT_ASSERT (complex_equals (&c11_2, complex_add (&result, &c10_1, &c1_1)));
}

//** test sub *\/
void test_complex_sub ()
{
  complex_t c9_0 = { 9, 0 };
  complex_t result;
  CCUNIT_ASSERT_TEST_OBJ (&c9_0, complex_equals,
                          complex_sub (&result, s10_1, s1_1),
                          complex_to_string);
}
@endcode

@~english
Finally, you end the fixture declaration:
@~japanese
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@~

@code
//** end test case *\/
@endcode

@~english
To generate creating suite function code, run
<code>ccunit_makeSuite</code> tool.
@~japanese
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@~

@code
$ ccunit_makeSuite -f complex_suite -o suiteComplex.c testComplex.c
$ cat suiteComplex.c

#include <ccunit/CCUnitTestSuite.h>
#include <ccunit/CCUnitTestFixture.h>
#include <ccunit/CCUnitTestCase.h>

//* test fixture: complex number test *\/
//* setUp_complex_test *\/
extern void setUp_complex_test ();
//* tearDown_complex_test *\/
extern void tearDown_complex_test ();
//* test_complex_equals *\/
extern void test_complex_equals ();
//* test_complex_add *\/
extern void test_complex_add ();
//* test_complex_sub *\/
extern void test_complex_sub ();

static CCUnitTestFunc fx_001_cases[] = {
  {
    "test_complex_equals",
    "test equals",
    test_complex_equals
  },
  {
    "test_complex_add",
    "test add",
    test_complex_add
  },
  {
    "test_complex_sub",
    "test sub",
    test_complex_sub
  },
  {
    NULL, NULL, NULL
  },
};

static CCUnitTestFixtureDfn fx_001 = {
  { ccunitTypeFixture },
  "complex number test",
  {
    "setUp_complex_test",
    "setUp_complex_test",
    setUp_complex_test
  },
  {
    "tearDown_complex_test",
    "tearDown_complex_test",
    tearDown_complex_test
  },
  fx_001_cases,
};

static CCUnitTestDfn* suite_001_test[] = {
    &fx_001.test,
    NULL,
};

static CCUnitTestSuiteDfn suite_001 = {
  { ccunitTypeSuite },
  "",
  suite_001_test
};


CCUnitTestSuite* complex_suite (const char* name)
{
  if (!suite_001.name[0])
    suite_001.name = name;
  return ccunit_newTestSuiteFromDfn (&suite_001);
}
$
@endcode

@english
@section post_build_check Post-build check
@japanese
@section post_build_check ¥Ó¥ë¥É¸å¤Î¥Á¥§¥Ã¥¯
@endif

@~english
Now that we have our unit tests running, how about
integrating unit testing to our build process ?
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@~english
To do that, the application must returns a value different than 0 to indicate that
there was an error.
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@~english
@link ccunit_runTestRunner() ccunit_runTestRunner() @endlink returns
a integer indicating if the run was successful.
@~japanese
@link ccunit_runTestRunner() ccunit_runTestRunner() @endlink
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@~english
Updating our main programm, we obtains:
@~japanese
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@~

@code
#include <ccunit/CCUnitTestRunner.h>

int main (int argc, char** argv)
{
  CCUnitTestRunner* runner;
  CCUnitTestSuite* suite;
  int wasSucessful;
  runner = ccunit_newTestRunner (stdout);
  suite = ccunit_suite ();
  wasSucessful = ccunit_runTestRunner (runner, suite);
  return wasSucessful;
}
@endcode

@~english
Now, you need to run your application after compilation.
The sample program made in the above is in the examples/complex directory.
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@~

*/