In Catalan, "clar" means clear, easy to perceive. Using clar will make it easy to test and make clear the quality of your code. Originally the clar project was named "clay" because the word "test" has its roots in the latin word "testum", meaning "earthen pot", and "testa", meaning "piece of burned clay"? This is because historically, testing implied melting metal in a pot toClay is what tests are made of. Clar is a minimal C unit testing framework. It's been written to replace the old framework in libgit2, but it's both very versatile and Can you count to funk? Zero: Initialize test directory Two: Build the test executable Writing a test suite is pretty straightforward. Each test suite is a *.c file with a descriptive name: this encourages modularity. Each test suite has optional initialize and cleanup methods. will be called before and after running each test in the suite, even ifAs a rule of thumb, if a test needs a different initializer

or cleanup method than another test in the same module, that means it doesn't belong in that module. Keep that in mind when grouping testshow do i know if i need a new ac unit The initialize and cleanup methods have the following syntax, withpackage ac unit parts suitename being the current suite name, e.g. adding for the adding.cac unit for 3 rooms These methods are encouraged to use static, global variables to store the state that will be used by all tests inside the suite. Writing the actual tests is just as straightforward. void test_suitename__test_name(void) signature, and they should notClar will automatically detect and list them. Tests are run as they appear on their original suites: they have no return

A test is considered "passed" if it doesn't raise any errors. the "Clar API" section to see the various helper functions to check and raise errors during test execution. Caution: If you use assertions inside of test_suitename__initialize, make sure that you do not rely on __initialize being completely run inside your test_suitename__cleanup function. encounter ressource cleanup twice. The Clar boilerplate gives you a set of useful test assertions and features (like accessing or making sandbox copies of fixture data). the clar.c and clar.h files, plus the code in the clar/ subdirectory. You should not need to edit these files. The sample main.c (i.e. $CLAR_PATH/test/main.c.sample) file invokes clar_test(argc, argv) to run the tests. Usually, you will edit this file to perform any framework specific initialization and teardown that you need. The Clar mixer (generate.py) recursively scans your test directory for any .c files, parses them, and writes the clar.suite file with all of

the metadata about your tests. When you build, the clar.suite file is The mixer can be run with Python 2.5, 2.6, 2.7, 3.0, 3.1, 3.2 and PyPy 1.6. Commandline usage of the mixer is as follows:is the folder where all the test suites can be found. will automatically locate all the relevant source files and build theThe metadata will be written to clar.suite, in the same folder as all the test suites. This file is included by clar.c and so must be accessible via #include when building the test executable. Note that the Clar mixer only needs to be ran when adding new tests to a suite, in order to regenerate the metadata. As a result, the clar.suite file can be checked into version control if you wish to be able to build your test suite without having to re-run the mixer. This is handy when e.g. generating tests in a local computer, and then building and testing them on an embedded device or a platform where Python Clar can create sandboxed fixtures for you to use in your test.

You'll need to compile clar.c with an additional CFLAG, -DCLAR_FIXTURE_PATH. This should be an absolute path to your fixtures directory. Once that's done, you can use the fixture API as defined below. Clar makes the following methods available from all functions in a test cl_must_pass(call), cl_must_pass_(call, message): Verify that the given function call passes, in the POSIX sense (returns a value greater or equal cl_must_fail(call), cl_must_fail_(call, message): Verify that the given function call fails, in the POSIX sense (returns a value less than 0). cl_assert(expr), cl_assert_(expr, message): Verify that expr is true. cl_check_pass(call), cl_check_pass_(call, message): Verify that the given function call passes, in the POSIX sense (returns a value greater orIf the function call doesn't succeed, a test failure will be logged but the test's execution will continue. cl_check_fail(call), cl_check_fail_(call, message): Verify that the

given function call fails, in the POSIX sense (returns a value less than 0). If the function call doesn't fail, a test failure will be logged but the test's execution will continue. cl_check(expr): Verify that expr is true. If expr is not true, a test failure will be logged but the test's execution will continue. cl_fail(message): Fail the current test with the given message. cl_warning(message): Issue a warning. This warning will be logged as a test failure but the test's execution will continue. cl_set_cleanup(void (*cleanup)(void *), void *opaque): Set the cleanup method for a single test. This method will be called with opaque as its argument before the test returns (even if the test has failed). If a global cleanup method is also available, the local cleanup will be called first, and then the global. cl_assert_equal_i(int,int): Verify that two integer values are equal. The advantage of this over a simple cl_assert is that it will format

a much nicer error report if the values are not equal. cl_assert_equal_s(const char *,const char *): Verify that two stringsThe expected value can also be NULL and this will correctly cl_fixture_sandbox(const char *): Sets up a sandbox for a fixture so that you can mutate the file directly. cl_fixture_cleanup(const char *): Tears down the previous fixture cl_fixture(const char *): Gets the full path to a fixture file. Please do note that these methods are always available whilst running a test, even when calling auxiliary/static functions inside the same file. It's strongly encouraged to perform test assertions in auxiliary methods, instead of returning error values. This is considered good Clar style. Clar has been written from scratch by Vicent Martí, to replace the old testing framework in libgit2. Do you know what languages are in on the SF startup scene? Follow @vmg on Twitter to receive more lessons on word etymology.