From: Brendan Higgins <brendanhiggins@google.com> 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 <brendanhiggins@google.com> Subject: [PATCH v8 07/18] kunit: test: add initial tests Date: Wed, 10 Jul 2019 00:14:57 -0700 [thread overview] Message-ID: <20190710071508.173491-8-brendanhiggins@google.com> (raw) In-Reply-To: <20190710071508.173491-1-brendanhiggins@google.com> Add a test for string stream along with a simpler example. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> --- kunit/Kconfig | 21 +++++++++ kunit/Makefile | 4 ++ kunit/example-test.c | 88 ++++++++++++++++++++++++++++++++++++++ kunit/string-stream-test.c | 75 ++++++++++++++++++++++++++++++++ 4 files changed, 188 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 330ae83527c23..8541ef95b65ad 100644 --- a/kunit/Kconfig +++ b/kunit/Kconfig @@ -14,4 +14,25 @@ config KUNIT architectures. For more information, please see Documentation/dev-tools/kunit/. +config KUNIT_TEST + bool "KUnit test for KUnit" + depends on KUNIT + help + Enables the unit tests for the KUnit test framework. These tests test + the KUnit test framework itself; the tests are both written using + KUnit and test KUnit. This option should only be enabled for testing + purposes by developers interested in testing that KUnit works as + expected. + +config KUNIT_EXAMPLE_TEST + bool "Example test for KUnit" + depends on KUNIT + help + Enables an example unit test that illustrates some of the basic + features of KUnit. This test only exists to help new users understand + what KUnit is and how it is used. Please refer to the example test + itself, kunit/example-test.c, for more information. This option is + intended for curious hackers who would like to understand how to use + KUnit for kernel development. + endmenu diff --git a/kunit/Makefile b/kunit/Makefile index 6ddc622ee6b1c..60a9ea6cb4697 100644 --- a/kunit/Makefile +++ b/kunit/Makefile @@ -1,3 +1,7 @@ obj-$(CONFIG_KUNIT) += test.o \ string-stream.o \ kunit-stream.o + +obj-$(CONFIG_KUNIT_TEST) += string-stream-test.o + +obj-$(CONFIG_KUNIT_EXAMPLE_TEST) += example-test.o diff --git a/kunit/example-test.c b/kunit/example-test.c new file mode 100644 index 0000000000000..f64a829aa441f --- /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) 2019, Google LLC. + * Author: Brendan Higgins <brendanhiggins@google.com> + */ + +#include <kunit/test.h> + +/* + * 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 kunit *)`. `struct kunit` is a context object that stores + * information about the current test. + */ +static void example_simple_test(struct kunit *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. + */ + KUNIT_EXPECT_EQ(test, 1 + 1, 2); +} + +/* + * This is run once before each test case, see the comment on + * example_test_suite for more information. + */ +static int example_test_init(struct kunit *test) +{ + kunit_info(test, "initializing\n"); + + return 0; +} + +/* + * Here we make a list of all the test cases we want to add to the test suite + * below. + */ +static struct kunit_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 suite. + */ + KUNIT_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 + * `kunit_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 suite would behave as follows: + * + * suite.init(test); + * suite.test_case[0](test); + * suite.exit(test); + * suite.init(test); + * suite.test_case[1](test); + * suite.exit(test); + * ...; + */ +static struct kunit_suite example_test_suite = { + .name = "example", + .init = example_test_init, + .test_cases = example_test_cases, +}; + +/* + * This registers the above test suite telling KUnit that this is a suite of + * tests that need to be run. + */ +kunit_test_suite(example_test_suite); diff --git a/kunit/string-stream-test.c b/kunit/string-stream-test.c new file mode 100644 index 0000000000000..b5641b078b8f6 --- /dev/null +++ b/kunit/string-stream-test.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit test for struct string_stream. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins <brendanhiggins@google.com> + */ + +#include <linux/slab.h> +#include <kunit/test.h> +#include <kunit/string-stream.h> + +static void string_stream_test_empty_on_creation(struct kunit *test) +{ + struct string_stream *stream = alloc_string_stream(test); + + KUNIT_EXPECT_TRUE(test, string_stream_is_empty(stream)); +} + +static void string_stream_test_not_empty_after_add(struct kunit *test) +{ + struct string_stream *stream = alloc_string_stream(test); + + string_stream_add(stream, "Foo"); + + KUNIT_EXPECT_FALSE(test, string_stream_is_empty(stream)); +} +static void string_stream_test_get_string(struct kunit *test) +{ + struct string_stream *stream = alloc_string_stream(test); + char *output; + + string_stream_add(stream, "Foo"); + string_stream_add(stream, " %s", "bar"); + + output = string_stream_get_string(stream); + KUNIT_EXPECT_STREQ(test, output, "Foo bar"); + kfree(output); +} + +static void string_stream_test_add_and_clear(struct kunit *test) +{ + struct string_stream *stream = alloc_string_stream(test); + char *output; + int i; + + for (i = 0; i < 10; i++) + string_stream_add(stream, "A"); + + output = string_stream_get_string(stream); + KUNIT_EXPECT_STREQ(test, output, "AAAAAAAAAA"); + KUNIT_EXPECT_EQ(test, stream->length, (size_t)10); + KUNIT_EXPECT_FALSE(test, string_stream_is_empty(stream)); + kfree(output); + + string_stream_clear(stream); + + output = string_stream_get_string(stream); + KUNIT_EXPECT_STREQ(test, output, ""); + KUNIT_EXPECT_TRUE(test, string_stream_is_empty(stream)); +} + +static struct kunit_case string_stream_test_cases[] = { + KUNIT_CASE(string_stream_test_empty_on_creation), + KUNIT_CASE(string_stream_test_not_empty_after_add), + KUNIT_CASE(string_stream_test_get_string), + KUNIT_CASE(string_stream_test_add_and_clear), + {} +}; + +static struct kunit_suite string_stream_test_suite = { + .name = "string-stream-test", + .test_cases = string_stream_test_cases +}; +kunit_test_suite(string_stream_test_suite); -- 2.22.0.410.gd8fdbe21b5-goog
WARNING: multiple messages have this Message-ID (diff)
From: Brendan Higgins <brendanhiggins@google.com> 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: pmladek@suse.com, linux-doc@vger.kernel.org, amir73il@gmail.com, Brendan Higgins <brendanhiggins@google.com>, dri-devel@lists.freedesktop.org, Alexander.Levin@microsoft.com, linux-kselftest@vger.kernel.org, linux-nvdimm@lists.01.org, khilman@baylibre.com, knut.omang@oracle.com, wfg@linux.intel.com, joel@jms.id.au, rientjes@google.com, jdike@addtoit.com, dan.carpenter@oracle.com, devicetree@vger.kernel.org, linux-kbuild@vger.kernel.org, Tim.Bird@sony.com, linux-um@lists.infradead.org, rostedt@goodmis.org, julia.lawall@lip6.fr, kunit-dev@googlegroups.com, richard@nod.at, rdunlap@infradead.org, linux-kernel@vger.kernel.org, daniel@ffwll.ch, mpe@ellerman.id.au, linux-fsdevel@vger.kernel.org, logang@deltatee.com Subject: [PATCH v8 07/18] kunit: test: add initial tests Date: Wed, 10 Jul 2019 00:14:57 -0700 [thread overview] Message-ID: <20190710071508.173491-8-brendanhiggins@google.com> (raw) In-Reply-To: <20190710071508.173491-1-brendanhiggins@google.com> Add a test for string stream along with a simpler example. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> --- kunit/Kconfig | 21 +++++++++ kunit/Makefile | 4 ++ kunit/example-test.c | 88 ++++++++++++++++++++++++++++++++++++++ kunit/string-stream-test.c | 75 ++++++++++++++++++++++++++++++++ 4 files changed, 188 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 330ae83527c23..8541ef95b65ad 100644 --- a/kunit/Kconfig +++ b/kunit/Kconfig @@ -14,4 +14,25 @@ config KUNIT architectures. For more information, please see Documentation/dev-tools/kunit/. +config KUNIT_TEST + bool "KUnit test for KUnit" + depends on KUNIT + help + Enables the unit tests for the KUnit test framework. These tests test + the KUnit test framework itself; the tests are both written using + KUnit and test KUnit. This option should only be enabled for testing + purposes by developers interested in testing that KUnit works as + expected. + +config KUNIT_EXAMPLE_TEST + bool "Example test for KUnit" + depends on KUNIT + help + Enables an example unit test that illustrates some of the basic + features of KUnit. This test only exists to help new users understand + what KUnit is and how it is used. Please refer to the example test + itself, kunit/example-test.c, for more information. This option is + intended for curious hackers who would like to understand how to use + KUnit for kernel development. + endmenu diff --git a/kunit/Makefile b/kunit/Makefile index 6ddc622ee6b1c..60a9ea6cb4697 100644 --- a/kunit/Makefile +++ b/kunit/Makefile @@ -1,3 +1,7 @@ obj-$(CONFIG_KUNIT) += test.o \ string-stream.o \ kunit-stream.o + +obj-$(CONFIG_KUNIT_TEST) += string-stream-test.o + +obj-$(CONFIG_KUNIT_EXAMPLE_TEST) += example-test.o diff --git a/kunit/example-test.c b/kunit/example-test.c new file mode 100644 index 0000000000000..f64a829aa441f --- /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) 2019, Google LLC. + * Author: Brendan Higgins <brendanhiggins@google.com> + */ + +#include <kunit/test.h> + +/* + * 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 kunit *)`. `struct kunit` is a context object that stores + * information about the current test. + */ +static void example_simple_test(struct kunit *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. + */ + KUNIT_EXPECT_EQ(test, 1 + 1, 2); +} + +/* + * This is run once before each test case, see the comment on + * example_test_suite for more information. + */ +static int example_test_init(struct kunit *test) +{ + kunit_info(test, "initializing\n"); + + return 0; +} + +/* + * Here we make a list of all the test cases we want to add to the test suite + * below. + */ +static struct kunit_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 suite. + */ + KUNIT_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 + * `kunit_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 suite would behave as follows: + * + * suite.init(test); + * suite.test_case[0](test); + * suite.exit(test); + * suite.init(test); + * suite.test_case[1](test); + * suite.exit(test); + * ...; + */ +static struct kunit_suite example_test_suite = { + .name = "example", + .init = example_test_init, + .test_cases = example_test_cases, +}; + +/* + * This registers the above test suite telling KUnit that this is a suite of + * tests that need to be run. + */ +kunit_test_suite(example_test_suite); diff --git a/kunit/string-stream-test.c b/kunit/string-stream-test.c new file mode 100644 index 0000000000000..b5641b078b8f6 --- /dev/null +++ b/kunit/string-stream-test.c @@ -0,0 +1,75 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * KUnit test for struct string_stream. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins <brendanhiggins@google.com> + */ + +#include <linux/slab.h> +#include <kunit/test.h> +#include <kunit/string-stream.h> + +static void string_stream_test_empty_on_creation(struct kunit *test) +{ + struct string_stream *stream = alloc_string_stream(test); + + KUNIT_EXPECT_TRUE(test, string_stream_is_empty(stream)); +} + +static void string_stream_test_not_empty_after_add(struct kunit *test) +{ + struct string_stream *stream = alloc_string_stream(test); + + string_stream_add(stream, "Foo"); + + KUNIT_EXPECT_FALSE(test, string_stream_is_empty(stream)); +} +static void string_stream_test_get_string(struct kunit *test) +{ + struct string_stream *stream = alloc_string_stream(test); + char *output; + + string_stream_add(stream, "Foo"); + string_stream_add(stream, " %s", "bar"); + + output = string_stream_get_string(stream); + KUNIT_EXPECT_STREQ(test, output, "Foo bar"); + kfree(output); +} + +static void string_stream_test_add_and_clear(struct kunit *test) +{ + struct string_stream *stream = alloc_string_stream(test); + char *output; + int i; + + for (i = 0; i < 10; i++) + string_stream_add(stream, "A"); + + output = string_stream_get_string(stream); + KUNIT_EXPECT_STREQ(test, output, "AAAAAAAAAA"); + KUNIT_EXPECT_EQ(test, stream->length, (size_t)10); + KUNIT_EXPECT_FALSE(test, string_stream_is_empty(stream)); + kfree(output); + + string_stream_clear(stream); + + output = string_stream_get_string(stream); + KUNIT_EXPECT_STREQ(test, output, ""); + KUNIT_EXPECT_TRUE(test, string_stream_is_empty(stream)); +} + +static struct kunit_case string_stream_test_cases[] = { + KUNIT_CASE(string_stream_test_empty_on_creation), + KUNIT_CASE(string_stream_test_not_empty_after_add), + KUNIT_CASE(string_stream_test_get_string), + KUNIT_CASE(string_stream_test_add_and_clear), + {} +}; + +static struct kunit_suite string_stream_test_suite = { + .name = "string-stream-test", + .test_cases = string_stream_test_cases +}; +kunit_test_suite(string_stream_test_suite); -- 2.22.0.410.gd8fdbe21b5-goog _______________________________________________ linux-um mailing list linux-um@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-um
next prev parent reply other threads:[~2019-07-10 7:16 UTC|newest] Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-07-10 7:14 [PATCH v8 00/18] kunit: introduce KUnit, the Linux kernel unit testing framework Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` [PATCH v8 01/18] kunit: test: add KUnit test runner core Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` [PATCH v8 02/18] kunit: test: add test resource management API Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins [not found] ` <20190710071508.173491-1-brendanhiggins-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org> 2019-07-10 7:14 ` [PATCH v8 03/18] kunit: test: add string_stream a std::stream like string builder Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 10/18] kunit: test: add tests for kunit test abort Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 12/18] kunit: test: add tests for KUnit managed resources Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 14/18] kunit: defconfig: add defconfigs for building KUnit tests Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:14 ` [PATCH v8 04/18] kunit: test: add kunit_stream a std::stream like logger Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` [PATCH v8 05/18] kunit: test: add the concept of expectations Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` [PATCH v8 06/18] kbuild: enable building KUnit Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:49 ` Masahiro Yamada 2019-07-10 7:49 ` Masahiro Yamada 2019-07-10 7:49 ` Masahiro Yamada 2019-07-10 7:49 ` Masahiro Yamada 2019-07-10 7:14 ` Brendan Higgins [this message] 2019-07-10 7:14 ` [PATCH v8 07/18] kunit: test: add initial tests Brendan Higgins 2019-07-10 7:14 ` [PATCH v8 08/18] objtool: add kunit_try_catch_throw to the noreturn list Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:14 ` [PATCH v8 09/18] kunit: test: add support for test abort Brendan Higgins 2019-07-10 7:14 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 11/18] kunit: test: add the concept of assertions Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 13/18] kunit: tool: add Python wrappers for running KUnit tests Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 15/18] Documentation: kunit: add documentation for KUnit Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 16/18] MAINTAINERS: add entry for KUnit the unit testing framework Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 17/18] kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec() Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins 2019-07-10 7:15 ` [PATCH v8 18/18] MAINTAINERS: add proc sysctl KUnit test to PROC SYSCTL section Brendan Higgins 2019-07-10 7:15 ` Brendan Higgins
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