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[209.132.180.67]) by mx.google.com with ESMTP id z7-v6si14711138plk.215.2018.10.16.16.58.41; Tue, 16 Oct 2018 16:59:15 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20161025 header.b=Wt2CLAmZ; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727541AbeJQHqy (ORCPT + 99 others); Wed, 17 Oct 2018 03:46:54 -0400 Received: from mail-it1-f202.google.com ([209.85.166.202]:44130 "EHLO mail-it1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727506AbeJQHqx (ORCPT ); Wed, 17 Oct 2018 03:46:53 -0400 Received: by mail-it1-f202.google.com with SMTP id k69-v6so235612ite.9 for ; Tue, 16 Oct 2018 16:54:04 -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=uw9R47stJ0hTnKGMpz+45emoI+mx7jNptXF9kuz1348=; b=Wt2CLAmZ01nzug3igoC7QMWBTWiNCk2KyQeIforWF4nlybC7ZEhAAyYRVdH1zxAtzd pkOhW6g8H71Qvjbo+4UDKVWHR25ZLcCGnFZJlvKN2nXEE1zPb7NLvTY1IDQuohmg2Fxq wM3p2EuCN/DKI+SvMDHbH5K8RZtXeJWOQ9/MkvXW3qxPyjQGRjIpq91SNprEskd7YUnG MazK/PM7sdXZ1Y1eGs6Cf8sh7PODTkKGVurljr+88cCTY2JnkTNpnmCKZzSiRghYa4gw 5xBGJDMA7i2TQpHLnBIHS5pZz4COlFB+wDLnDM3KxhKGj89TVgGvSYScAe2JrawpCkhB hmEg== 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=uw9R47stJ0hTnKGMpz+45emoI+mx7jNptXF9kuz1348=; b=EJZmS0FkfriHXce2YU4YE+TdJ2s234fwxkP9LzGbPPrOSwXM10BMMJh/xquA3uM9nx JskNAfIDyD6rti2NUpBgYsEPyj0pd/Dq2lpIHNspm8p5Xk7XPVgLbjwBoD5qQujYybLJ F3Ue7C+t6fnM2xzMjd1Yiljm0t0DQv3T9xyJ4TUxaQoQmSxSthdGAD3ujf8bAX4wd5ri xRMjSlyOrevCpymskImUrJFV/9ShrfcxDROFcXE0CBN1LuJp7iVVR6EZIfqzegRCX0nE YyyLrYHzISYPYPWk4+p3Hrtqnn84esALLazN4G1dlGh4WE0ygZChEcItswrNnzCP6hcL uTWw== X-Gm-Message-State: ABuFfohEr4e4Vfs9MKInVaotQGSjSxDBpyrLxwvfGec009SqPO4YXzRL mB7ZkIPoTmLykiDDCDw6Bjjfg+wj9iZ0nA5HZvqYJw== X-Received: by 2002:a24:8082:: with SMTP id g124-v6mr223410itd.12.1539734043663; Tue, 16 Oct 2018 16:54:03 -0700 (PDT) Date: Tue, 16 Oct 2018 16:50:56 -0700 In-Reply-To: <20181016235120.138227-1-brendanhiggins@google.com> Message-Id: <20181016235120.138227-8-brendanhiggins@google.com> Mime-Version: 1.0 References: <20181016235120.138227-1-brendanhiggins@google.com> X-Mailer: git-send-email 2.19.1.331.ge82ca0e54c-goog Subject: [RFC v1 07/31] kunit: test: added initial tests From: Brendan Higgins To: gregkh@linuxfoundation.org, keescook@google.com, mcgrof@kernel.org, shuah@kernel.org Cc: 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, Brendan Higgins Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Added a test for string stream along with a more simple example. Signed-off-by: Brendan Higgins --- kunit/Kconfig | 12 ++++++ kunit/Makefile | 2 + kunit/example-test.c | 88 ++++++++++++++++++++++++++++++++++++++ kunit/string-stream-test.c | 61 ++++++++++++++++++++++++++ 4 files changed, 163 insertions(+) create mode 100644 kunit/example-test.c create mode 100644 kunit/string-stream-test.c diff --git a/kunit/Kconfig b/kunit/Kconfig index 64480092b2c24..5cb500355c873 100644 --- a/kunit/Kconfig +++ b/kunit/Kconfig @@ -13,4 +13,16 @@ config KUNIT special hardware. For more information, please see Documentation/kunit/ +config KUNIT_TEST + bool "KUnit test for KUnit" + depends on KUNIT + help + Enables KUnit test to test KUnit. + +config KUNIT_EXAMPLE_TEST + bool "Example test for KUnit" + depends on KUNIT + help + Enables example KUnit test to demo features of KUnit. + endmenu diff --git a/kunit/Makefile b/kunit/Makefile index 5b4562ea7f322..319eb9dc8be0e 100644 --- a/kunit/Makefile +++ b/kunit/Makefile @@ -1 +1,3 @@ obj-$(CONFIG_KUNIT) += test.o string-stream.o test-stream.o +obj-$(CONFIG_KUNIT_TEST) += string-stream-test.o +obj-$(CONFIG_EXAMPLE_TEST) += example-test.o diff --git a/kunit/example-test.c b/kunit/example-test.c new file mode 100644 index 0000000000000..e9bd2b41c5fd2 --- /dev/null +++ b/kunit/example-test.c @@ -0,0 +1,88 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Example KUnit test to show how to use KUnit. + * + * Copyright (C) 2018, Google LLC. + * Author: Brendan Higgins + */ + +#include + +/* + * This is the most fundamental element of KUnit, the test case. A test case + * makes a set EXPECTATIONs and ASSERTIONs about the behavior of some code; if + * any expectations or assertions are not met, the test fails; otherwise, the + * test passes. + * + * In KUnit, a test case is just a function with the signature + * `void (*)(struct test *)`. `struct test` is a context object that stores + * information about the current test. + */ +static void example_simple_test(struct test *test) +{ + /* + * This is an EXPECTATION; it is how KUnit tests things. When you want + * to test a piece of code, you set some expectations about what the + * code should do. KUnit then runs the test and verifies that the code's + * behavior matched what was expected. + */ + TEST_EXPECT_EQ(test, 1 + 1, 2); +} + +/* + * This is run once before each test case, see the comment on + * example_test_module for more information. + */ +static int example_test_init(struct test *test) +{ + test_info(test, "initializing"); + + return 0; +} + +/* + * Here we make a list of all the test cases we want to add to the test module + * below. + */ +static struct test_case example_test_cases[] = { + /* + * This is a helper to create a test case object from a test case + * function; its exact function is not important to understand how to + * use KUnit, just know that this is how you associate test cases with a + * test module. + */ + TEST_CASE(example_simple_test), + {}, +}; + +/* + * This defines a suite or grouping of tests. + * + * Test cases are defined as belonging to the suite by adding them to + * `test_cases`. + * + * Often it is desirable to run some function which will set up things which + * will be used by every test; this is accomplished with an `init` function + * which runs before each test case is invoked. Similarly, an `exit` function + * may be specified which runs after every test case and can be used to for + * cleanup. For clarity, running tests in a test module would behave as follows: + * + * module.init(test); + * module.test_case[0](test); + * module.exit(test); + * module.init(test); + * module.test_case[1](test); + * module.exit(test); + * ...; + */ +static struct test_module example_test_module = { + .name = "example", + .init = example_test_init, + .test_cases = example_test_cases, +}; + +/* + * This registers the above test module telling KUnit that this is a suite of + * tests that need to be run. + */ +module_test(example_test_module); diff --git a/kunit/string-stream-test.c b/kunit/string-stream-test.c new file mode 100644 index 0000000000000..07c626cbfffbf --- /dev/null +++ b/kunit/string-stream-test.c @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit test for struct string_stream. + * + * Copyright (C) 2018, Google LLC. + * Author: Brendan Higgins + */ + +#include +#include +#include + +static void string_stream_test_get_string(struct test *test) +{ + struct string_stream *stream = new_string_stream(); + char *output; + + stream->add(stream, "Foo"); + stream->add(stream, " %s", "bar"); + + output = stream->get_string(stream); + TEST_EXPECT_STREQ(test, output, "Foo bar"); + kfree(output); + destroy_string_stream(stream); +} + +static void string_stream_test_add_and_clear(struct test *test) +{ + struct string_stream *stream = new_string_stream(); + char *output; + int i; + + for (i = 0; i < 10; i++) + stream->add(stream, "A"); + + output = stream->get_string(stream); + TEST_EXPECT_STREQ(test, output, "AAAAAAAAAA"); + TEST_EXPECT_EQ(test, stream->length, 10); + TEST_EXPECT_FALSE(test, stream->is_empty(stream)); + kfree(output); + + stream->clear(stream); + + output = stream->get_string(stream); + TEST_EXPECT_STREQ(test, output, ""); + TEST_EXPECT_TRUE(test, stream->is_empty(stream)); + destroy_string_stream(stream); +} + +static struct test_case string_stream_test_cases[] = { + TEST_CASE(string_stream_test_get_string), + TEST_CASE(string_stream_test_add_and_clear), + {} +}; + +static struct test_module string_stream_test_module = { + .name = "string-stream-test", + .test_cases = string_stream_test_cases +}; +module_test(string_stream_test_module); + -- 2.19.1.331.ge82ca0e54c-goog