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s=20161025; h=x-gm-message-state:date:in-reply-to:message-id:mime-version :references:subject:from:to:cc; bh=WTBEI9dhLaNpiQO1YgDhQ720EkT8ERelrq0kDAUjwEY=; b=ef8ZK57Z1DGkGojHNVjweioPHYa1HN3e3uYNkNLSV6ZInO1LprGfK7S+SDHNis+FQq Oh4gw1ECBA4HAwMkyuQgjm/lbujQrhoFJulnSKWAPO1ek6QRy4QxfAqghYKUDIepzyxN VNnLSVpbwmSpQwWW04WzJcpKf0hwxX3WX0SGX4CRzwnbpF4t2YWZ79i9KJxRsc41gqAL mC0SJdcAGdxWQ1f9JLLAPzpEYPeJIZ5aIzazj7aaZTQu/FCFoxbcFXvP57VH6qT62i+M VZHN1rF5ObXe8XCa+1/X6XmZufSeYGGr6fzKarG+7c3Idb1k8vSIzN0m078jC7PP4Hk8 PYcw== X-Gm-Message-State: AHQUAuZgD4qKTKR/qguOMQEAz+SheSkQ0VcsHqcKPfIZcBrL5efkuU1W ju1IhNTb4Po6uPL+emeAP5ROndzSEoYe72IjWTjCYw== 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190214_133840_264548_7CC2377D X-CRM114-Status: GOOD ( 15.82 ) X-Spam-Score: -7.7 (-------) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-7.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:c4a listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -7.5 USER_IN_DEF_DKIM_WL From: address is in the default DKIM white-list -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_MED DKIMwl.org - Whitelisted Medium sender X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: brakmo@fb.com, pmladek@suse.com, amir73il@gmail.com, Brendan Higgins , dri-devel@lists.freedesktop.org, Alexander.Levin@microsoft.com, linux-kselftest@vger.kernel.org, linux-nvdimm@lists.01.org, richard@nod.at, knut.omang@oracle.com, wfg@linux.intel.com, joel@jms.id.au, jdike@addtoit.com, dan.carpenter@oracle.com, devicetree@vger.kernel.org, Tim.Bird@sony.com, linux-um@lists.infradead.org, rostedt@goodmis.org, julia.lawall@lip6.fr, dan.j.williams@intel.com, kunit-dev@googlegroups.com, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, daniel@ffwll.ch, mpe@ellerman.id.au, joe@perches.com, khilman@baylibre.com Sender: "linux-um" Errors-To: linux-um-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org 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; }