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,
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richard@nod.at, rientjes@google.com, rostedt@goodmis.org,
wfg@linux.intel.com, Avinash Kondareddy <akndr41@gmail.com>,
Brendan Higgins <brendanhiggins@google.com>
Subject: [PATCH v14 12/18] kunit: test: add tests for KUnit managed resources
Date: Tue, 20 Aug 2019 16:20:40 -0700 [thread overview]
Message-ID: <20190820232046.50175-13-brendanhiggins@google.com> (raw)
In-Reply-To: <20190820232046.50175-1-brendanhiggins@google.com>
From: Avinash Kondareddy <akndr41@gmail.com>
Add unit tests for KUnit managed resources. KUnit managed resources
(struct kunit_resource) are resources that are automatically cleaned up
at the end of a KUnit test, similar to the concept of devm_* managed
resources.
Signed-off-by: Avinash Kondareddy <akndr41@gmail.com>
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Stephen Boyd <sboyd@kernel.org>
---
kunit/test-test.c | 228 ++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 228 insertions(+)
diff --git a/kunit/test-test.c b/kunit/test-test.c
index e0ab4bd546eac..5ebe059d16e25 100644
--- a/kunit/test-test.c
+++ b/kunit/test-test.c
@@ -101,3 +101,231 @@ static struct kunit_suite kunit_try_catch_test_suite = {
.test_cases = kunit_try_catch_test_cases,
};
kunit_test_suite(kunit_try_catch_test_suite);
+
+/*
+ * Context for testing test managed resources
+ * is_resource_initialized is used to test arbitrary resources
+ */
+struct kunit_test_resource_context {
+ struct kunit test;
+ bool is_resource_initialized;
+ int allocate_order[2];
+ int free_order[2];
+};
+
+static int fake_resource_init(struct kunit_resource *res, void *context)
+{
+ struct kunit_test_resource_context *ctx = context;
+
+ res->allocation = &ctx->is_resource_initialized;
+ ctx->is_resource_initialized = true;
+ return 0;
+}
+
+static void fake_resource_free(struct kunit_resource *res)
+{
+ bool *is_resource_initialized = res->allocation;
+
+ *is_resource_initialized = false;
+}
+
+static void kunit_resource_test_init_resources(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+
+ kunit_init_test(&ctx->test, "testing_test_init_test");
+
+ KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
+}
+
+static void kunit_resource_test_alloc_resource(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+ struct kunit_resource *res;
+ kunit_resource_free_t free = fake_resource_free;
+
+ res = kunit_alloc_and_get_resource(&ctx->test,
+ fake_resource_init,
+ fake_resource_free,
+ GFP_KERNEL,
+ ctx);
+
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, res);
+ KUNIT_EXPECT_PTR_EQ(test,
+ &ctx->is_resource_initialized,
+ (bool *) res->allocation);
+ KUNIT_EXPECT_TRUE(test, list_is_last(&res->node, &ctx->test.resources));
+ KUNIT_EXPECT_PTR_EQ(test, free, res->free);
+}
+
+static void kunit_resource_test_destroy_resource(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+ struct kunit_resource *res = kunit_alloc_and_get_resource(
+ &ctx->test,
+ fake_resource_init,
+ fake_resource_free,
+ GFP_KERNEL,
+ ctx);
+
+ KUNIT_ASSERT_FALSE(test,
+ kunit_resource_destroy(&ctx->test,
+ kunit_resource_instance_match,
+ res->free,
+ res->allocation));
+
+ KUNIT_EXPECT_FALSE(test, ctx->is_resource_initialized);
+ KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
+}
+
+static void kunit_resource_test_cleanup_resources(struct kunit *test)
+{
+ int i;
+ struct kunit_test_resource_context *ctx = test->priv;
+ struct kunit_resource *resources[5];
+
+ for (i = 0; i < ARRAY_SIZE(resources); i++) {
+ resources[i] = kunit_alloc_and_get_resource(&ctx->test,
+ fake_resource_init,
+ fake_resource_free,
+ GFP_KERNEL,
+ ctx);
+ }
+
+ kunit_cleanup(&ctx->test);
+
+ KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
+}
+
+static void kunit_resource_test_mark_order(int order_array[],
+ size_t order_size,
+ int key)
+{
+ int i;
+
+ for (i = 0; i < order_size && order_array[i]; i++)
+ ;
+
+ order_array[i] = key;
+}
+
+#define KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, order_field, key) \
+ kunit_resource_test_mark_order(ctx->order_field, \
+ ARRAY_SIZE(ctx->order_field), \
+ key)
+
+static int fake_resource_2_init(struct kunit_resource *res, void *context)
+{
+ struct kunit_test_resource_context *ctx = context;
+
+ KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, allocate_order, 2);
+
+ res->allocation = ctx;
+
+ return 0;
+}
+
+static void fake_resource_2_free(struct kunit_resource *res)
+{
+ struct kunit_test_resource_context *ctx = res->allocation;
+
+ KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, free_order, 2);
+}
+
+static int fake_resource_1_init(struct kunit_resource *res, void *context)
+{
+ struct kunit_test_resource_context *ctx = context;
+
+ kunit_alloc_and_get_resource(&ctx->test,
+ fake_resource_2_init,
+ fake_resource_2_free,
+ GFP_KERNEL,
+ ctx);
+
+ KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, allocate_order, 1);
+
+ res->allocation = ctx;
+
+ return 0;
+}
+
+static void fake_resource_1_free(struct kunit_resource *res)
+{
+ struct kunit_test_resource_context *ctx = res->allocation;
+
+ KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, free_order, 1);
+}
+
+/*
+ * TODO(brendanhiggins@google.com): replace the arrays that keep track of the
+ * order of allocation and freeing with strict mocks using the IN_SEQUENCE macro
+ * to assert allocation and freeing order when the feature becomes available.
+ */
+static void kunit_resource_test_proper_free_ordering(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+
+ /* fake_resource_1 allocates a fake_resource_2 in its init. */
+ kunit_alloc_and_get_resource(&ctx->test,
+ fake_resource_1_init,
+ fake_resource_1_free,
+ GFP_KERNEL,
+ ctx);
+
+ /*
+ * Since fake_resource_2_init calls KUNIT_RESOURCE_TEST_MARK_ORDER
+ * before returning to fake_resource_1_init, it should be the first to
+ * put its key in the allocate_order array.
+ */
+ KUNIT_EXPECT_EQ(test, ctx->allocate_order[0], 2);
+ KUNIT_EXPECT_EQ(test, ctx->allocate_order[1], 1);
+
+ kunit_cleanup(&ctx->test);
+
+ /*
+ * Because fake_resource_2 finishes allocation before fake_resource_1,
+ * fake_resource_1 should be freed first since it could depend on
+ * fake_resource_2.
+ */
+ KUNIT_EXPECT_EQ(test, ctx->free_order[0], 1);
+ KUNIT_EXPECT_EQ(test, ctx->free_order[1], 2);
+}
+
+static int kunit_resource_test_init(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx =
+ kzalloc(sizeof(*ctx), GFP_KERNEL);
+
+ KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
+
+ test->priv = ctx;
+
+ kunit_init_test(&ctx->test, "test_test_context");
+
+ return 0;
+}
+
+static void kunit_resource_test_exit(struct kunit *test)
+{
+ struct kunit_test_resource_context *ctx = test->priv;
+
+ kunit_cleanup(&ctx->test);
+ kfree(ctx);
+}
+
+static struct kunit_case kunit_resource_test_cases[] = {
+ KUNIT_CASE(kunit_resource_test_init_resources),
+ KUNIT_CASE(kunit_resource_test_alloc_resource),
+ KUNIT_CASE(kunit_resource_test_destroy_resource),
+ KUNIT_CASE(kunit_resource_test_cleanup_resources),
+ KUNIT_CASE(kunit_resource_test_proper_free_ordering),
+ {}
+};
+
+static struct kunit_suite kunit_resource_test_suite = {
+ .name = "kunit-resource-test",
+ .init = kunit_resource_test_init,
+ .exit = kunit_resource_test_exit,
+ .test_cases = kunit_resource_test_cases,
+};
+kunit_test_suite(kunit_resource_test_suite);
--
2.23.0.rc1.153.gdeed80330f-goog
next prev parent reply other threads:[~2019-08-20 23:22 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 23:20 [PATCH v14 00/18] kunit: introduce KUnit, the Linux kernel unit testing framework Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 01/18] kunit: test: add KUnit test runner core Brendan Higgins
2019-08-23 15:33 ` shuah
2019-08-23 16:48 ` Brendan Higgins
2019-08-23 17:05 ` shuah
2019-08-23 17:27 ` Brendan Higgins
2019-08-23 17:34 ` shuah
2019-08-23 17:54 ` Brendan Higgins
2019-08-23 18:32 ` shuah
2019-08-23 18:56 ` Brendan Higgins
2019-08-23 19:04 ` shuah
2019-08-23 19:20 ` Brendan Higgins
2019-08-23 19:43 ` shuah
2019-08-20 23:20 ` [PATCH v14 02/18] kunit: test: add test resource management API Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 03/18] kunit: test: add string_stream a std::stream like string builder Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 04/18] kunit: test: add assertion printing library Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 05/18] kunit: test: add the concept of expectations Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 06/18] kbuild: enable building KUnit Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 07/18] kunit: test: add initial tests Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 08/18] objtool: add kunit_try_catch_throw to the noreturn list Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 09/18] kunit: test: add support for test abort Brendan Higgins
2019-08-23 15:36 ` shuah
2019-08-23 16:56 ` Brendan Higgins
2019-08-23 17:07 ` shuah
2019-08-23 17:29 ` Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 10/18] kunit: test: add tests for kunit " Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 11/18] kunit: test: add the concept of assertions Brendan Higgins
2019-08-20 23:20 ` Brendan Higgins [this message]
2019-08-20 23:20 ` [PATCH v14 13/18] kunit: tool: add Python wrappers for running KUnit tests Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 14/18] kunit: defconfig: add defconfigs for building " Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 15/18] Documentation: kunit: add documentation for KUnit Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 16/18] MAINTAINERS: add entry for KUnit the unit testing framework Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 17/18] kernel/sysctl-test: Add null pointer test for sysctl.c:proc_dointvec() Brendan Higgins
2019-08-20 23:20 ` [PATCH v14 18/18] MAINTAINERS: add proc sysctl KUnit test to PROC SYSCTL section Brendan Higgins
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