linux-stable/lib/kunit/debugfs.c
David Gow 6d2426b2f2 kunit: Support skipped tests
The kunit_mark_skipped() macro marks the current test as "skipped", with
the provided reason. The kunit_skip() macro will mark the test as
skipped, and abort the test.

The TAP specification supports this "SKIP directive" as a comment after
the "ok" / "not ok" for a test. See the "Directives" section of the TAP
spec for details:
https://testanything.org/tap-specification.html#directives

The 'success' field for KUnit tests is replaced with a kunit_status
enum, which can be SUCCESS, FAILURE, or SKIPPED, combined with a
'status_comment' containing information on why a test was skipped.

A new 'kunit_status' test suite is added to test this.

Signed-off-by: David Gow <davidgow@google.com>
Tested-by: Marco Elver <elver@google.com>
Reviewed-by: Daniel Latypov <dlatypov@google.com>
Reviewed-by: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2021-06-25 11:31:03 -06:00

116 lines
2.7 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (c) 2020, Oracle and/or its affiliates.
* Author: Alan Maguire <alan.maguire@oracle.com>
*/
#include <linux/debugfs.h>
#include <linux/module.h>
#include <kunit/test.h>
#include "string-stream.h"
#define KUNIT_DEBUGFS_ROOT "kunit"
#define KUNIT_DEBUGFS_RESULTS "results"
/*
* Create a debugfs representation of test suites:
*
* Path Semantics
* /sys/kernel/debug/kunit/<testsuite>/results Show results of last run for
* testsuite
*
*/
static struct dentry *debugfs_rootdir;
void kunit_debugfs_cleanup(void)
{
debugfs_remove_recursive(debugfs_rootdir);
}
void kunit_debugfs_init(void)
{
if (!debugfs_rootdir)
debugfs_rootdir = debugfs_create_dir(KUNIT_DEBUGFS_ROOT, NULL);
}
static void debugfs_print_result(struct seq_file *seq,
struct kunit_suite *suite,
struct kunit_case *test_case)
{
if (!test_case || !test_case->log)
return;
seq_printf(seq, "%s", test_case->log);
}
/*
* /sys/kernel/debug/kunit/<testsuite>/results shows all results for testsuite.
*/
static int debugfs_print_results(struct seq_file *seq, void *v)
{
struct kunit_suite *suite = (struct kunit_suite *)seq->private;
bool success = kunit_suite_has_succeeded(suite);
struct kunit_case *test_case;
if (!suite || !suite->log)
return 0;
seq_printf(seq, "%s", suite->log);
kunit_suite_for_each_test_case(suite, test_case)
debugfs_print_result(seq, suite, test_case);
seq_printf(seq, "%s %d - %s\n",
kunit_status_to_ok_not_ok(success), 1, suite->name);
return 0;
}
static int debugfs_release(struct inode *inode, struct file *file)
{
return single_release(inode, file);
}
static int debugfs_results_open(struct inode *inode, struct file *file)
{
struct kunit_suite *suite;
suite = (struct kunit_suite *)inode->i_private;
return single_open(file, debugfs_print_results, suite);
}
static const struct file_operations debugfs_results_fops = {
.open = debugfs_results_open,
.read = seq_read,
.llseek = seq_lseek,
.release = debugfs_release,
};
void kunit_debugfs_create_suite(struct kunit_suite *suite)
{
struct kunit_case *test_case;
/* Allocate logs before creating debugfs representation. */
suite->log = kzalloc(KUNIT_LOG_SIZE, GFP_KERNEL);
kunit_suite_for_each_test_case(suite, test_case)
test_case->log = kzalloc(KUNIT_LOG_SIZE, GFP_KERNEL);
suite->debugfs = debugfs_create_dir(suite->name, debugfs_rootdir);
debugfs_create_file(KUNIT_DEBUGFS_RESULTS, S_IFREG | 0444,
suite->debugfs,
suite, &debugfs_results_fops);
}
void kunit_debugfs_destroy_suite(struct kunit_suite *suite)
{
struct kunit_case *test_case;
debugfs_remove_recursive(suite->debugfs);
kfree(suite->log);
kunit_suite_for_each_test_case(suite, test_case)
kfree(test_case->log);
}