linux/lib/kunit/string-stream-test.c
Alan Maguire c475c77d5b kunit: allow kunit tests to be loaded as a module
As tests are added to kunit, it will become less feasible to execute
all built tests together.  By supporting modular tests we provide
a simple way to do selective execution on a running system; specifying

CONFIG_KUNIT=y
CONFIG_KUNIT_EXAMPLE_TEST=m

...means we can simply "insmod example-test.ko" to run the tests.

To achieve this we need to do the following:

o export the required symbols in kunit
o string-stream tests utilize non-exported symbols so for now we skip
  building them when CONFIG_KUNIT_TEST=m.
o drivers/base/power/qos-test.c contains a few unexported interface
  references, namely freq_qos_read_value() and freq_constraints_init().
  Both of these could be potentially defined as static inline functions
  in include/linux/pm_qos.h, but for now we simply avoid supporting
  module build for that test suite.
o support a new way of declaring test suites.  Because a module cannot
  do multiple late_initcall()s, we provide a kunit_test_suites() macro
  to declare multiple suites within the same module at once.
o some test module names would have been too general ("test-test"
  and "example-test" for kunit tests, "inode-test" for ext4 tests);
  rename these as appropriate ("kunit-test", "kunit-example-test"
  and "ext4-inode-test" respectively).

Also define kunit_test_suite() via kunit_test_suites()
as callers in other trees may need the old definition.

Co-developed-by: Knut Omang <knut.omang@oracle.com>
Signed-off-by: Knut Omang <knut.omang@oracle.com>
Signed-off-by: Alan Maguire <alan.maguire@oracle.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Acked-by: Theodore Ts'o <tytso@mit.edu> # for ext4 bits
Acked-by: David Gow <davidgow@google.com> # For list-test
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-01-09 16:42:29 -07:00

54 lines
1.4 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* KUnit test for struct string_stream.
*
* Copyright (C) 2019, Google LLC.
* Author: Brendan Higgins <brendanhiggins@google.com>
*/
#include <kunit/test.h>
#include <linux/slab.h>
#include "string-stream.h"
static void string_stream_test_empty_on_creation(struct kunit *test)
{
struct string_stream *stream = alloc_string_stream(test, GFP_KERNEL);
KUNIT_EXPECT_TRUE(test, string_stream_is_empty(stream));
}
static void string_stream_test_not_empty_after_add(struct kunit *test)
{
struct string_stream *stream = alloc_string_stream(test, GFP_KERNEL);
string_stream_add(stream, "Foo");
KUNIT_EXPECT_FALSE(test, string_stream_is_empty(stream));
}
static void string_stream_test_get_string(struct kunit *test)
{
struct string_stream *stream = alloc_string_stream(test, GFP_KERNEL);
char *output;
string_stream_add(stream, "Foo");
string_stream_add(stream, " %s", "bar");
output = string_stream_get_string(stream);
KUNIT_ASSERT_STREQ(test, output, "Foo bar");
}
static struct kunit_case string_stream_test_cases[] = {
KUNIT_CASE(string_stream_test_empty_on_creation),
KUNIT_CASE(string_stream_test_not_empty_after_add),
KUNIT_CASE(string_stream_test_get_string),
{}
};
static struct kunit_suite string_stream_test_suite = {
.name = "string-stream-test",
.test_cases = string_stream_test_cases
};
kunit_test_suites(&string_stream_test_suite);