From patchwork Mon Jun 17 08:25:59 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brendan Higgins X-Patchwork-Id: 10998375 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 D5B141395 for ; Mon, 17 Jun 2019 08:26:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C3442284BD for ; Mon, 17 Jun 2019 08:26:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B4F4728857; Mon, 17 Jun 2019 08:26:57 +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 E95D6284BD for ; Mon, 17 Jun 2019 08:26:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727725AbfFQI04 (ORCPT ); Mon, 17 Jun 2019 04:26:56 -0400 Received: from mail-qk1-f201.google.com ([209.85.222.201]:44478 "EHLO mail-qk1-f201.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727723AbfFQI0z (ORCPT ); Mon, 17 Jun 2019 04:26:55 -0400 Received: by mail-qk1-f201.google.com with SMTP id c207so8505460qkb.11 for ; Mon, 17 Jun 2019 01:26:54 -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=cUnWzVAEdqo7bGTNoMyzrIXrLOc4T43iDGYg6P6lpY4=; b=wQ0RYif4cw/h0o/LGMM2xUdirnSFJ0JsUONqN1ZdxRULIgBX27MlLzTRLpa1oqIzdF P6Dwe5eWAU9fP9ddEtwJoCrtZpkdSZERoVGk1KckdNqq6Assl5VfFZQznKjm/HmXuK49 CZxd6od0b+uFUd3MAZQwjmvIRHcQd30mnhpBn/jyXmtF5xsTA8g3KTVHkrTOecDtulCd EvJv96og8ZBKk/WdNNM5z9WjBb4S+PFOuuPD1vg/8OJf+FH4bQdzWs9v+uV0jtmGQvxp MkGoRvyb6LtEtcih/MTXiEeu14WrH0rX3zasBargq8yPieKjpn+ACHIjmQaFwaWnmTp/ USGg== 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=cUnWzVAEdqo7bGTNoMyzrIXrLOc4T43iDGYg6P6lpY4=; b=N8ij17qnucON6R7fKwMe0fCa6k2cEDmsrB7D3rFDMPJab63HDaEIT7s5CXb8iziCg7 WWJe+4+vFKD5kcRoETQNnopqwLULn9Kj5si7aPKipjWbprVdvtIdH8D1FtM5Dcu3DPga bGUPFa1ge/viiUhjwegoP0Bbu9Uc1XkrTxYFeKUyW4OBIaiXQfI+QxyghhRBM+BkEyeB KfV64Wb8FRFtuFMw0lm1Ll24uHIWuPsq0GJJhDPTURTeJT9Eu/05gW2qiw8xTuXF/hs4 szNOSbBHYKuU18rfn9Un4GRFFlOJz7Mwqjk3NlMmfLNIpO28RN+J4VQISQhGzUcLaKLN THNg== X-Gm-Message-State: APjAAAUFV2sp+4XCZhdVS1fzXr/wULTYXrmESyNTWmP/ynAHD7B0j5lD IrNINHrL77niXbfwLmxFxJRj5jaP6R4PbAjnBBlnrg== X-Google-Smtp-Source: APXvYqxNXmCWnPByBmN+rCTqVJl6sYyohRlRCxNiROvAb9NP+5L7zbkrbYvqHQOdbMZE8mUlmYnX7lqsX/Z2RH+ZdUY5fw== X-Received: by 2002:a37:4d82:: with SMTP id a124mr16268821qkb.72.1560760014245; Mon, 17 Jun 2019 01:26:54 -0700 (PDT) Date: Mon, 17 Jun 2019 01:25:59 -0700 In-Reply-To: <20190617082613.109131-1-brendanhiggins@google.com> Message-Id: <20190617082613.109131-5-brendanhiggins@google.com> Mime-Version: 1.0 References: <20190617082613.109131-1-brendanhiggins@google.com> X-Mailer: git-send-email 2.22.0.410.gd8fdbe21b5-goog Subject: [PATCH v5 04/18] kunit: test: add kunit_stream a std::stream like logger From: Brendan Higgins To: frowand.list@gmail.com, gregkh@linuxfoundation.org, jpoimboe@redhat.com, keescook@google.com, kieran.bingham@ideasonboard.com, mcgrof@kernel.org, peterz@infradead.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, 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-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@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: - Renamed kunit_new_stream() to alloc_kunit_stream() as suggested by Stephen Boyd. - Removed the ability to set log level after allocating a stream, as suggested by Stephen Boyd. - Removed locking, as it is now unnecessary with the previous change. - Made a number of other small changes like renaming parameters as suggested by Stephen Boyd. --- include/kunit/kunit-stream.h | 81 +++++++++++++++++++++++ include/kunit/test.h | 3 + kunit/Makefile | 3 +- kunit/kunit-stream.c | 123 +++++++++++++++++++++++++++++++++++ kunit/test.c | 6 ++ 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..a7b53eabf6be4 --- /dev/null +++ b/include/kunit/kunit-stream.h @@ -0,0 +1,81 @@ +/* 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; + const char *level; + struct string_stream *internal_stream; +}; + +/** + * alloc_kunit_stream() - constructs a new &struct kunit_stream. + * @test: The test context object. + * @level: The log level at which to print out the message. + * + * Constructs a new test managed &struct kunit_stream. + */ +struct kunit_stream *alloc_kunit_stream(struct kunit *test, const char *level); + +/** + * kunit_stream_add(): adds the formatted input to the internal buffer. + * @kstream: 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 *kstream, + const char *fmt, ...); + +/** + * kunit_stream_append(): appends the contents of @other to @kstream. + * @kstream: the stream to which @other is appended. + * @other: the stream whose contents are appended to @kstream. + * + * Appends the contents of @other to @kstream. + */ +void kunit_stream_append(struct kunit_stream *kstream, + struct kunit_stream *other); + +/** + * kunit_stream_commit(): prints out the internal buffer to the user. + * @kstream: the stream being operated on. + * + * Outputs the contents of the internal buffer as a kunit_printk formatted + * output. KUNIT_STREAM ONLY OUTPUTS ITS BUFFER TO THE USER IF COMMIT IS + * CALLED!!! The reason for this is that it allows us to construct a message + * before we know whether we want to print it out; this can be extremely handy + * if there is information you might need for a failure message that is easiest + * to collect in the steps leading up to the actual check. + */ +void kunit_stream_commit(struct kunit_stream *kstream); + +/** + * kunit_stream_clear(): clears the internal buffer. + * @kstream: the stream being operated on. + * + * Clears the contents of the internal buffer. + */ +void kunit_stream_clear(struct kunit_stream *kstream); + +#endif /* _KUNIT_KUNIT_STREAM_H */ diff --git a/include/kunit/test.h b/include/kunit/test.h index 27bd95b6b5523..83fb7ace1b320 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..8bea1f22eafb5 --- /dev/null +++ b/kunit/kunit-stream.c @@ -0,0 +1,123 @@ +// 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 + +void kunit_stream_add(struct kunit_stream *kstream, const char *fmt, ...) +{ + va_list args; + struct string_stream *stream = kstream->internal_stream; + + va_start(args, fmt); + + if (string_stream_vadd(stream, fmt, args) < 0) + kunit_err(kstream->test, + "Failed to allocate fragment: %s\n", + fmt); + + va_end(args); +} + +void kunit_stream_append(struct kunit_stream *kstream, + 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(kstream->test, + "Failed to get string from second argument for appending\n"); + return; + } + + kunit_stream_add(kstream, other_content); +} + +void kunit_stream_clear(struct kunit_stream *kstream) +{ + string_stream_clear(kstream->internal_stream); +} + +void kunit_stream_commit(struct kunit_stream *kstream) +{ + struct string_stream *stream = kstream->internal_stream; + struct string_stream_fragment *fragment; + struct kunit *test = kstream->test; + char *buf; + + buf = string_stream_get_string(stream); + if (!buf) { + kunit_err(test, + "Could not allocate buffer, dumping stream:\n"); + list_for_each_entry(fragment, &stream->fragments, node) { + kunit_err(test, fragment->fragment); + } + kunit_err(test, "\n"); + goto cleanup; + } + + kunit_printk(kstream->level, test, buf); + kfree(buf); + +cleanup: + kunit_stream_clear(kstream); +} + +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; + stream->internal_stream = alloc_string_stream(test); + + if (!stream->internal_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); + } +} + +struct kunit_stream *alloc_kunit_stream(struct kunit *test, const char *level) +{ + struct kunit_stream *kstream; + struct kunit_resource *res; + + res = kunit_alloc_resource(test, + kunit_stream_init, + kunit_stream_free, + test); + + if (!res) + return NULL; + + kstream = res->allocation; + kstream->level = level; + + return kstream; +} diff --git a/kunit/test.c b/kunit/test.c index 53838f5394303..9404e4d34fa3f 100644 --- a/kunit/test.c +++ b/kunit/test.c @@ -139,6 +139,12 @@ 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_commit(stream); +} + void kunit_init_test(struct kunit *test, const char *name) { spin_lock_init(&test->lock);