From patchwork Tue May 14 05:42:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brendan Higgins X-Patchwork-Id: 10942103 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 D3DE21390 for ; Tue, 14 May 2019 05:44:25 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C509D285D6 for ; Tue, 14 May 2019 05:44:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B7AA3285E2; Tue, 14 May 2019 05:44:25 +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 EA7C3285D6 for ; Tue, 14 May 2019 05:44:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726961AbfENFoE (ORCPT ); Tue, 14 May 2019 01:44:04 -0400 Received: from mail-pl1-f202.google.com ([209.85.214.202]:55552 "EHLO mail-pl1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726948AbfENFoD (ORCPT ); Tue, 14 May 2019 01:44:03 -0400 Received: by mail-pl1-f202.google.com with SMTP id b8so9874292pls.22 for ; Mon, 13 May 2019 22:44:02 -0700 (PDT) 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=J7jNxXx2/Tojw9LkQBvkznuAV27E11EoaIcDTsM30ik=; b=rBSMRYv6rcgf9//g8xbBS7nj7wXeNN0kUp4Ny4gMt/205NXZuBUEfAGZGUqQ/IIRLJ T9q5gjFm+3UV+T+Ba55A5XSzmNTjVsyCWu7g0rjQIhYWvGtM/lKSV0MBPT7+Uu4sj3Ns cdhhmUPyS9LpYUrAU9TSmLXVwMsy8Ru0sHQaCkmJQcniNEVVGKyzGisJ5rNE+SySd0Ho 5bEf+Nlf5wVndA4XF35fHsn5SKA+4SR6UH8eJFEQyxBNdjWzK2fW50vOUx5PIkp8y7FR x0rv8s/8/ssOFMyHsqoRkTT4/0V1oZ3eddqPhKnu4A9BAU4StCJclt3AgjNPIBj/4Hmj SzLg== 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=J7jNxXx2/Tojw9LkQBvkznuAV27E11EoaIcDTsM30ik=; b=bwLTStqfkvUOzdRQ/l7OgzTrZ5szsTdCipI1kFHFvEvoNgxk5z/FPYV3DDFfW645gG ifBYmcm7ycGunYnnUS4GuXbe/Jl9bogsVhWcHr9i3iVAdY3AN9n9HOtV5ZwY8s0jGT4d nNAG5mhj0ddSbnQ9Z/JFp9hpxEd/7XmbF9seGnwK71+qZd/XRcOLN1N+uQp7J5bNuGRe BuzDu6hmME194yos6GqQv54GLmsH7j5V1GRdOjWfsle9Lw2g6bl0Y1ZMBkc2XhzCEAl9 Jlou+n3uo+4jEWoWodAGJZVQdYmQNApRYFeA0D7YJQ/J8WAdGF27rjdYXFP0iqRfJQXo aTVg== X-Gm-Message-State: APjAAAWn9p+AU1XosrFEabr38ji8VBZKuGyhxFOnqChHB7ZFYBolx/MT HxQ9HBmkfUk1JjQmFB99NHkDZEvqJMCEB/3UVbvewA== X-Google-Smtp-Source: APXvYqwDgWK6D5zh2H9zOeZMl7FTqGXfZom8j6k/qPQTCzWEIs4iUL6yGm+xbdZd25stfXMxSVVYpf0Cp9+yxVzww2vLNg== X-Received: by 2002:a63:1c4:: with SMTP id 187mr8764328pgb.317.1557812641863; Mon, 13 May 2019 22:44:01 -0700 (PDT) Date: Mon, 13 May 2019 22:42:37 -0700 In-Reply-To: <20190514054251.186196-1-brendanhiggins@google.com> Message-Id: <20190514054251.186196-5-brendanhiggins@google.com> Mime-Version: 1.0 References: <20190514054251.186196-1-brendanhiggins@google.com> X-Mailer: git-send-email 2.21.0.1020.gf2820cf01a-goog Subject: [PATCH v3 04/18] kunit: test: add kunit_stream a std::stream like logger From: Brendan Higgins To: frowand.list@gmail.com, gregkh@linuxfoundation.org, keescook@google.com, kieran.bingham@ideasonboard.com, mcgrof@kernel.org, robh@kernel.org, sboyd@kernel.org, shuah@kernel.org, tytso@mit.edu, yamada.masahiro@socionext.com Cc: devicetree@vger.kernel.org, dri-devel@lists.freedesktop.org, kunit-dev@googlegroups.com, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-nvdimm@lists.01.org, linux-um@lists.infradead.org, Alexander.Levin@microsoft.com, Tim.Bird@sony.com, amir73il@gmail.com, dan.carpenter@oracle.com, dan.j.williams@intel.com, daniel@ffwll.ch, jdike@addtoit.com, joel@jms.id.au, julia.lawall@lip6.fr, khilman@baylibre.com, knut.omang@oracle.com, logang@deltatee.com, mpe@ellerman.id.au, pmladek@suse.com, rdunlap@infradead.org, richard@nod.at, rientjes@google.com, rostedt@goodmis.org, wfg@linux.intel.com, Brendan Higgins Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@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 Reviewed-by: Greg Kroah-Hartman Reviewed-by: Logan Gunthorpe --- Changes Since Last Revision: - Greg and Frank requested that KUnit prints out results in TAP format; the work to support this mostly happened in PATCH 01/18. - `kunit_stream_get_level` was made static as suggested by kbuild bot. --- include/kunit/kunit-stream.h | 85 ++++++++++++++++++++ include/kunit/test.h | 3 + kunit/Makefile | 3 +- kunit/kunit-stream.c | 152 +++++++++++++++++++++++++++++++++++ kunit/test.c | 7 ++ 5 files changed, 249 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..d457a54fe0100 --- /dev/null +++ b/include/kunit/kunit-stream.h @@ -0,0 +1,85 @@ +/* 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. + * + * A std::stream style string builder. Allows messages to be built up and + * printed all at once. + */ +struct kunit_stream { + /* 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); + +/** + * kunit_stream_set_level(): sets the level that string should be printed at. + * @this: the stream being operated on. + * @level: the print level the stream is set to output to. + * + * Sets the print level at which the stream outputs. + */ +void kunit_stream_set_level(struct kunit_stream *this, const char *level); + +/** + * kunit_stream_add(): adds the formatted input to the internal buffer. + * @this: the stream being operated on. + * @fmt: printf style format string to append to stream. + * + * Appends the formatted string, @fmt, to the internal buffer. + */ +void __printf(2, 3) kunit_stream_add(struct kunit_stream *this, + const char *fmt, ...); + +/** + * kunit_stream_append(): appends the contents of @other to @this. + * @this: the stream to which @other is appended. + * @other: the stream whose contents are appended to @this. + * + * Appends the contents of @other to @this. + */ +void kunit_stream_append(struct kunit_stream *this, struct kunit_stream *other); + +/** + * kunit_stream_commit(): prints out the internal buffer to the user. + * @this: the stream being operated on. + * + * Outputs the contents of the internal buffer as a kunit_printk formatted + * output. + */ +void kunit_stream_commit(struct kunit_stream *this); + +/** + * kunit_stream_clear(): clears the internal buffer. + * @this: the stream being operated on. + * + * Clears the contents of the internal buffer. + */ +void kunit_stream_clear(struct kunit_stream *this); + +#endif /* _KUNIT_KUNIT_STREAM_H */ diff --git a/include/kunit/test.h b/include/kunit/test.h index 5e86d88cd5305..4bc839884a83c 100644 --- a/include/kunit/test.h +++ b/include/kunit/test.h @@ -11,6 +11,7 @@ #include #include +#include struct kunit_resource; @@ -172,6 +173,8 @@ struct kunit { void kunit_init_test(struct kunit *test, const char *name); +void kunit_fail(struct kunit *test, struct kunit_stream *stream); + int kunit_run_tests(struct kunit_module *module); /** 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..1884f1b550888 --- /dev/null +++ b/kunit/kunit-stream.c @@ -0,0 +1,152 @@ +// 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; +} + +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); +} + +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 (string_stream_vadd(stream, fmt, args) < 0) + kunit_err(this->test, "Failed to allocate fragment: %s\n", fmt); + + va_end(args); +} + +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 = string_stream_get_string(other_stream); + + if (!other_content) { + kunit_err(this->test, + "Failed to get string from second argument for appending.\n"); + return; + } + + kunit_stream_add(this, other_content); +} + +void kunit_stream_clear(struct kunit_stream *this) +{ + string_stream_clear(this->internal_stream); +} + +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.\n"); + level = KERN_ERR; + kunit_stream_set_level(this, level); + } + + buf = string_stream_get_string(stream); + if (!buf) { + kunit_err(this->test, + "Could not allocate buffer, dumping stream:\n"); + list_for_each_entry(fragment, &stream->fragments, node) { + kunit_err(this->test, fragment->fragment); + } + kunit_err(this->test, "\n"); + goto cleanup; + } + + kunit_printk(level, this->test, buf); + kfree(buf); + +cleanup: + kunit_stream_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) { + kfree(stream); + return -ENOMEM; + } + + return 0; +} + +static void kunit_stream_free(struct kunit_resource *res) +{ + struct kunit_stream *stream = res->allocation; + + if (!string_stream_is_empty(stream->internal_stream)) { + kunit_err(stream->test, + "End of test case reached with uncommitted stream entries.\n"); + kunit_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 a15e6f8c41582..0bb6f53a7f87e 100644 --- a/kunit/test.c +++ b/kunit/test.c @@ -138,6 +138,13 @@ static void kunit_print_test_case_ok_not_ok(struct kunit_case *test_case, test_case->name); } +void kunit_fail(struct kunit *test, struct kunit_stream *stream) +{ + kunit_set_success(test, false); + kunit_stream_set_level(stream, KERN_ERR); + kunit_stream_commit(stream); +} + void kunit_init_test(struct kunit *test, const char *name) { spin_lock_init(&test->lock);