From patchwork Thu Feb 14 21:37:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brendan Higgins X-Patchwork-Id: 10813919 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AF81917E0 for ; Thu, 14 Feb 2019 21:40:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9E24A2F0FE for ; Thu, 14 Feb 2019 21:40:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9B53C2F10E; Thu, 14 Feb 2019 21:40:36 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, USER_IN_DEF_DKIM_WL autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E3F592F152 for ; Thu, 14 Feb 2019 21:40:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730684AbfBNVkY (ORCPT ); Thu, 14 Feb 2019 16:40:24 -0500 Received: from mail-yw1-f74.google.com ([209.85.161.74]:49830 "EHLO mail-yw1-f74.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2438081AbfBNVij (ORCPT ); Thu, 14 Feb 2019 16:38:39 -0500 Received: by mail-yw1-f74.google.com with SMTP id r187so4598098ywb.16 for ; Thu, 14 Feb 2019 13:38:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=date:in-reply-to:message-id:mime-version:references:subject:from:to :cc; bh=WTBEI9dhLaNpiQO1YgDhQ720EkT8ERelrq0kDAUjwEY=; b=axdrzy+nhyMVZsGRnUzmeHhDeifEzho1UzbukZw74FmTauMjIZU7cP58YkPnUjZiW7 0Ao3tvXxxjBkMBd3UtMhokcA4lSPks/PNdJtRZYLS7yDOgO2D33lmpGbg/QzvPlBNMOQ +VdtOXwYaltFcCnEW/E1YP13+wSduaT0N0dzdsrCPUHhHRqyR2CXDO3Jbd12YmycrMxx 1IMkZ3WboTv8EUUetPSD6gXPiKrwdXjM7UMcPpXWgMvjGJsb+WDu38mvj9ckOJySyqMK lb42o4h8YCGJWQNOpuFPOPofTMr4U6r8Axl1V0CbFgFUtSgyFWk8qcA0+rDtjCECxvPv 8asg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=WTBEI9dhLaNpiQO1YgDhQ720EkT8ERelrq0kDAUjwEY=; b=er+V6/RQVRUY6AD0F6p+toPgZ8Hq+40D7I+km5WW6ep3M1OINPlezh5paIQswYMbnr IYIsPYEXvufeJPC1Fia1tH0QFWaLaG9MZPTqkjmnQc/mStOWakfPcAhC+jjswWcvBWGk 6WK4XwoNtMX8fDK5jxCv9x7D/Eo4Kwz0x5kXkbe6xYuwCThfhkTUpbRA3Zk8ZWJwPocq jD7XOc5g5AvNFx3kPNBYpiQiCsY/5JSgjv/kjAsRV+IBDglizebn128O0zQj5SoD2lQy VyMnlQmJV5EFngE2q25oqMb6+15VvSBDgKPBaQE7GnkjCwPDZYsMM9pCxkSM9sKua+UM 537A== X-Gm-Message-State: AHQUAuaCQ+NVbP/3kYWU7SC9V4FvtewO+4Jx8gxJ6/GhJSDIaKcMSw8s YkrDomKtAZ/gRXwgulcsmelsVplS6b4JVMfdGBNnGg== X-Google-Smtp-Source: AHgI3IZhWMnwZv9YzmJYf+KXD5jDzVDzPaGN3u1IDznZqCx9KWJhCfAbizN3bNOLO9fW7kqTri+BQRdtD6JBibyhWOhOMA== X-Received: by 2002:a25:2acd:: with SMTP id q196mr2636843ybq.57.1550180318154; Thu, 14 Feb 2019 13:38:38 -0800 (PST) Date: Thu, 14 Feb 2019 13:37:16 -0800 In-Reply-To: <20190214213729.21702-1-brendanhiggins@google.com> Message-Id: <20190214213729.21702-5-brendanhiggins@google.com> Mime-Version: 1.0 References: <20190214213729.21702-1-brendanhiggins@google.com> X-Mailer: git-send-email 2.21.0.rc0.258.g878e2cd30e-goog Subject: [RFC v4 04/17] kunit: test: add test_stream a std::stream like logger From: Brendan Higgins To: keescook@google.com, mcgrof@kernel.org, shuah@kernel.org, robh@kernel.org, kieran.bingham@ideasonboard.com, frowand.list@gmail.com Cc: gregkh@linuxfoundation.org, joel@jms.id.au, mpe@ellerman.id.au, joe@perches.com, brakmo@fb.com, rostedt@goodmis.org, Tim.Bird@sony.com, khilman@baylibre.com, julia.lawall@lip6.fr, linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com, linux-kernel@vger.kernel.org, jdike@addtoit.com, richard@nod.at, linux-um@lists.infradead.org, daniel@ffwll.ch, dri-devel@lists.freedesktop.org, dan.j.williams@intel.com, linux-nvdimm@lists.01.org, knut.omang@oracle.com, devicetree@vger.kernel.org, pmladek@suse.com, Alexander.Levin@microsoft.com, amir73il@gmail.com, dan.carpenter@oracle.com, wfg@linux.intel.com, Brendan Higgins Sender: linux-kselftest-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP A lot of the expectation and assertion infrastructure prints out fairly complicated test failure messages, so add a C++ style log library for for logging test results. Signed-off-by: Brendan Higgins --- include/kunit/kunit-stream.h | 50 ++++++++++++ include/kunit/test.h | 2 + kunit/Makefile | 3 +- kunit/kunit-stream.c | 153 +++++++++++++++++++++++++++++++++++ kunit/test.c | 8 ++ 5 files changed, 215 insertions(+), 1 deletion(-) create mode 100644 include/kunit/kunit-stream.h create mode 100644 kunit/kunit-stream.c diff --git a/include/kunit/kunit-stream.h b/include/kunit/kunit-stream.h new file mode 100644 index 0000000000000..15ad83a6b7aae --- /dev/null +++ b/include/kunit/kunit-stream.h @@ -0,0 +1,50 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * C++ stream style string formatter and printer used in KUnit for outputting + * KUnit messages. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins + */ + +#ifndef _KUNIT_KUNIT_STREAM_H +#define _KUNIT_KUNIT_STREAM_H + +#include +#include + +struct kunit; + +/** + * struct kunit_stream - a std::stream style string builder. + * @set_level: sets the level that this string should be printed at. + * @add: adds the formatted input to the internal buffer. + * @append: adds the contents of other to this. + * @commit: prints out the internal buffer to the user. + * @clear: clears the internal buffer. + * + * A std::stream style string builder. Allows messages to be built up and + * printed all at once. + */ +struct kunit_stream { + void (*set_level)(struct kunit_stream *this, const char *level); + void (*add)(struct kunit_stream *this, const char *fmt, ...); + void (*append)(struct kunit_stream *this, struct kunit_stream *other); + void (*commit)(struct kunit_stream *this); + void (*clear)(struct kunit_stream *this); + /* private: internal use only. */ + struct kunit *test; + spinlock_t lock; /* Guards level. */ + const char *level; + struct string_stream *internal_stream; +}; + +/** + * kunit_new_stream() - constructs a new &struct kunit_stream. + * @test: The test context object. + * + * Constructs a new test managed &struct kunit_stream. + */ +struct kunit_stream *kunit_new_stream(struct kunit *test); + +#endif /* _KUNIT_KUNIT_STREAM_H */ diff --git a/include/kunit/test.h b/include/kunit/test.h index 21abc9e953969..75cd3c3ab1b4b 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -11,6 +11,7 @@ #include #include +#include struct kunit_resource; @@ -171,6 +172,7 @@ struct kunit { void (*vprintk)(const struct kunit *test, const char *level, struct va_format *vaf); + void (*fail)(struct kunit *test, struct kunit_stream *stream); }; int kunit_init_test(struct kunit *test, const char *name); diff --git a/kunit/Makefile b/kunit/Makefile index 275b565a0e81f..6ddc622ee6b1c 100644 --- a/kunit/Makefile +++ b/kunit/Makefile @@ -1,2 +1,3 @@ obj-$(CONFIG_KUNIT) += test.o \ - string-stream.o + string-stream.o \ + kunit-stream.o diff --git a/kunit/kunit-stream.c b/kunit/kunit-stream.c new file mode 100644 index 0000000000000..bc88638aef3b1 --- /dev/null +++ b/kunit/kunit-stream.c @@ -0,0 +1,153 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * C++ stream style string formatter and printer used in KUnit for outputting + * KUnit messages. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins + */ + +#include +#include +#include + +static const char *kunit_stream_get_level(struct kunit_stream *this) +{ + unsigned long flags; + const char *level; + + spin_lock_irqsave(&this->lock, flags); + level = this->level; + spin_unlock_irqrestore(&this->lock, flags); + + return level; +} + +static void kunit_stream_set_level(struct kunit_stream *this, const char *level) +{ + unsigned long flags; + + spin_lock_irqsave(&this->lock, flags); + this->level = level; + spin_unlock_irqrestore(&this->lock, flags); +} + +static void kunit_stream_add(struct kunit_stream *this, const char *fmt, ...) +{ + va_list args; + struct string_stream *stream = this->internal_stream; + + va_start(args, fmt); + if (stream->vadd(stream, fmt, args) < 0) + kunit_err(this->test, "Failed to allocate fragment: %s", fmt); + + va_end(args); +} + +static void kunit_stream_append(struct kunit_stream *this, + struct kunit_stream *other) +{ + struct string_stream *other_stream = other->internal_stream; + const char *other_content; + + other_content = other_stream->get_string(other_stream); + + if (!other_content) { + kunit_err(this->test, + "Failed to get string from second argument for appending."); + return; + } + + this->add(this, other_content); +} + +static void kunit_stream_clear(struct kunit_stream *this) +{ + this->internal_stream->clear(this->internal_stream); +} + +static void kunit_stream_commit(struct kunit_stream *this) +{ + struct string_stream *stream = this->internal_stream; + struct string_stream_fragment *fragment; + const char *level; + char *buf; + + level = kunit_stream_get_level(this); + if (!level) { + kunit_err(this->test, + "Stream was committed without a specified log level."); + level = KERN_ERR; + this->set_level(this, level); + } + + buf = stream->get_string(stream); + if (!buf) { + kunit_err(this->test, + "Could not allocate buffer, dumping stream:"); + list_for_each_entry(fragment, &stream->fragments, node) { + kunit_err(this->test, fragment->fragment); + } + goto cleanup; + } + + kunit_printk(level, this->test, buf); + kfree(buf); + +cleanup: + this->clear(this); +} + +static int kunit_stream_init(struct kunit_resource *res, void *context) +{ + struct kunit *test = context; + struct kunit_stream *stream; + + stream = kzalloc(sizeof(*stream), GFP_KERNEL); + if (!stream) + return -ENOMEM; + res->allocation = stream; + stream->test = test; + spin_lock_init(&stream->lock); + stream->internal_stream = new_string_stream(); + + if (!stream->internal_stream) + return -ENOMEM; + + stream->set_level = kunit_stream_set_level; + stream->add = kunit_stream_add; + stream->append = kunit_stream_append; + stream->commit = kunit_stream_commit; + stream->clear = kunit_stream_clear; + + return 0; +} + +static void kunit_stream_free(struct kunit_resource *res) +{ + struct kunit_stream *stream = res->allocation; + + if (!stream->internal_stream->is_empty(stream->internal_stream)) { + kunit_err(stream->test, + "End of test case reached with uncommitted stream entries."); + stream->commit(stream); + } + + destroy_string_stream(stream->internal_stream); + kfree(stream); +} + +struct kunit_stream *kunit_new_stream(struct kunit *test) +{ + struct kunit_resource *res; + + res = kunit_alloc_resource(test, + kunit_stream_init, + kunit_stream_free, + test); + + if (res) + return res->allocation; + else + return NULL; +} diff --git a/kunit/test.c b/kunit/test.c index 84f2e1c040af3..1a2e5e6b7ffee 100644 --- a/kunit/test.c +++ b/kunit/test.c @@ -63,12 +63,20 @@ static void kunit_vprintk(const struct kunit *test, "kunit %s: %pV", test->name, vaf); } +static void kunit_fail(struct kunit *test, struct kunit_stream *stream) +{ + kunit_set_success(test, false); + stream->set_level(stream, KERN_ERR); + stream->commit(stream); +} + int kunit_init_test(struct kunit *test, const char *name) { spin_lock_init(&test->lock); INIT_LIST_HEAD(&test->resources); test->name = name; test->vprintk = kunit_vprintk; + test->fail = kunit_fail; return 0; }