mirror of
https://github.com/netsurf-browser/netsurf
synced 2024-11-27 00:40:15 +03:00
167 lines
3.8 KiB
Plaintext
167 lines
3.8 KiB
Plaintext
NetSurf Unit Testing
|
|
====================
|
|
|
|
Overview
|
|
--------
|
|
|
|
NetSurf has unit tests integrated in the test directory. These tests
|
|
use the check unit test framework for C [1].
|
|
|
|
The tests are in a logical hierachy of "suite", "case" and individual
|
|
"test". Historicaly we have split suites of tests into separate test
|
|
programs although the framework does not madate this and some test
|
|
programs contain more than one suite.
|
|
|
|
|
|
Execution
|
|
---------
|
|
|
|
The test programs are executed by using the standard "test" target
|
|
from the top level make invocation. The "coverage" target additionally
|
|
generates code coverage reports allowing visibility on how much of a
|
|
code module is being exercised.
|
|
|
|
The check library must be installed to run the tests and the CI system
|
|
automatically executes all enabled tests and generates coverage
|
|
reports for each commit.
|
|
|
|
Adding tests
|
|
------------
|
|
|
|
The test/Makefile defines each indiviadual test program that should be
|
|
built and executed in the TESTS variable.
|
|
|
|
The test program source files are defined in a xxx_SRCS variable and
|
|
the make rules will then ensure the target program is built and
|
|
executed.
|
|
|
|
Each individual test program requires a main function which creates
|
|
one (or more) suites. The suites are added to a test runner and then
|
|
executed and the results reported.
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
int number_failed;
|
|
SRunner *sr;
|
|
|
|
sr = srunner_create(foo_suite_create());
|
|
//srunner_add_suite(sr, bar_suite_create());
|
|
|
|
srunner_run_all(sr, CK_ENV);
|
|
|
|
number_failed = srunner_ntests_failed(sr);
|
|
srunner_free(sr);
|
|
|
|
return (number_failed == 0) ? EXIT_SUCCESS : EXIT_FAILURE;
|
|
}
|
|
|
|
Suite creation is done with a sub function to logically split suite
|
|
code into sub modules. Each suite has test cases added to it.
|
|
|
|
Suite *foo_suite_create(void)
|
|
{
|
|
Suite *s;
|
|
s = suite_create("foo");
|
|
|
|
suite_add_tcase(s, baz_case_create());
|
|
suite_add_tcase(s, qux_case_create());
|
|
|
|
return s;
|
|
}
|
|
|
|
Test cases include the actual tests to be performed within each case.
|
|
|
|
TCase *baz_case_create(void)
|
|
{
|
|
TCase *tc;
|
|
tc = tcase_create("Baz");
|
|
|
|
tcase_add_test(tc, xxyz_test);
|
|
tcase_add_test(tc, zzyx_test);
|
|
|
|
return tc;
|
|
}
|
|
|
|
A test case may optionally have a fixture which is code that is
|
|
executed before and after each test case. Unchecked fixtures are
|
|
executed once before the test process forks for each test whereas
|
|
checked fixtures are executed for each and every test.
|
|
|
|
static void fixture_setup(void)
|
|
{
|
|
}
|
|
|
|
static void fixture_teardown(void)
|
|
{
|
|
}
|
|
|
|
TCase *qux_case_create(void)
|
|
{
|
|
TCase *tc;
|
|
|
|
/* Matching entry tests */
|
|
tc = tcase_create("Match");
|
|
|
|
tcase_add_checked_fixture(tc,
|
|
fixture_setup,
|
|
fixture_teardown);
|
|
|
|
tcase_add_test(tc, zzz_test);
|
|
|
|
return tc;
|
|
}
|
|
|
|
Additionally test cases can contain tests executed in a loop. The test
|
|
recives a single integer as a parameter named _i which iterates
|
|
between values specified in the case setup.
|
|
|
|
TCase *baz_case_create(void)
|
|
{
|
|
TCase *tc;
|
|
tc = tcase_create("Baz");
|
|
|
|
tcase_add_loop_test(tc, looping_test, 0, 5);
|
|
|
|
return tc;
|
|
}
|
|
|
|
It is also possible to create tests which will generate a signal. The
|
|
most commonly used of these is to check asserts in API calls.
|
|
|
|
TCase *baz_case_create(void)
|
|
{
|
|
TCase *tc;
|
|
tc = tcase_create("Baz");
|
|
|
|
tcase_add_test_raise_signal(tc, assert_test, 6);
|
|
|
|
return tc;
|
|
}
|
|
|
|
|
|
Actual test code is self contained in a function which uses the
|
|
ck_assert macros to test results. The check framework requires each
|
|
test to use the START_TEST and END_TEST macros when definig them.
|
|
|
|
/**
|
|
* url access leaf test
|
|
*/
|
|
START_TEST(nsurl_access_leaf_test)
|
|
{
|
|
nserror err;
|
|
nsurl *res_url;
|
|
const struct test_triplets *tst = &access_tests[_i];
|
|
|
|
/* not testing create, this should always succeed */
|
|
err = nsurl_create(tst->test1, &res_url);
|
|
ck_assert(err == NSERROR_OK);
|
|
|
|
ck_assert_str_eq(nsurl_access_leaf(res_url), tst->res);
|
|
|
|
nsurl_unref(res_url);
|
|
}
|
|
END_TEST
|
|
|
|
|
|
[1] https://libcheck.github.io/check/
|