From patchwork Mon Sep 23 09:02:42 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Brendan Higgins X-Patchwork-Id: 11156407 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6803F18B6 for ; Mon, 23 Sep 2019 09:03:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3C51020B7C for ; Mon, 23 Sep 2019 09:03:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="GI21sUf3" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2438989AbfIWJDa (ORCPT ); Mon, 23 Sep 2019 05:03:30 -0400 Received: from mail-pf1-f202.google.com ([209.85.210.202]:47535 "EHLO mail-pf1-f202.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2439015AbfIWJD3 (ORCPT ); Mon, 23 Sep 2019 05:03:29 -0400 Received: by mail-pf1-f202.google.com with SMTP id t65so9677825pfd.14 for ; Mon, 23 Sep 2019 02:03:28 -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=aABf1eQBMP6/WvpZsyoq3EyRjH0cX7yhFaKM6+EkpH4=; b=GI21sUf3oZ6DYiG/+Jhz0sYjOCvxAmsw2C9EKCnEV67ccufPSgzGIXwPwFwew+cbe1 YpJja/0JRQQX5vXDuJdt/143yNeAOlX6QXdTpgkbmuD2A9GGl66yxlG04O/CbHBjyZ1T Wv40HlgiEMzRtiCO69qdi5sdlyEAkb3wv3DyADciKwjBWC3aGfMEZJ++V7ULP24skXR3 RnXLn2acLnfWEjcqkWekC/bkIurzyBm+5abEwBCDGDB/xHT0yHYAFDJTzaehK00H1dTN 66PdJYlR4dW9//lg2Iez2Vsxm0tfIQWt9Pp22z2Osifsj60oSOS/gtkQM8teCVsA8kO1 G3mw== 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=aABf1eQBMP6/WvpZsyoq3EyRjH0cX7yhFaKM6+EkpH4=; b=FnZSHcifJteMzqOGCnZCNwX+RCwpJ8bL990FG9D7DxA9N/ybddQCSjQ6ZaekQp/hdb 0Rg9K3GQVHEUqPYDKDG3QuGwkXx1sFrcj3JNkXi0OiK2isZglCGVi2CrsLjqRgTYF4uB 872ZnK0+T6u4cGbsiopWaJXqGn3F3d8W9eVUYZp5Mbcwjr79C4SNoKrkf3tK+7ClywXA IxyKSAl5umr7SqIrij3h185CeEHPN9PNWrip4MSRnGAhOE8J3D2DfV6q5bNlNvPstE1X NpFXN3hOb2Jxon1V0oV/AdF0YSGuuT2maZzd4Bgwvo0uji/ph5vPMKurisohuTkq3vdV 3MdQ== X-Gm-Message-State: APjAAAV1mly6OF0h8twjOrtpD0fAkAp2eI+7P9QT9tUfjfmGz/KiFGQf TRKxhIu4p0bFc9x7hEnvJUpctgiQlM+gb0dyVv/ZkA== X-Google-Smtp-Source: APXvYqwrP8d93wF9ocSsNZH/fKLo5PsVAWBR43eIffn+O4lfaUN5LsvXJmp/YYGODg6cNMu46H6mqa4mptguEcqcpKS4oQ== X-Received: by 2002:a63:4562:: with SMTP id u34mr27746150pgk.288.1569229407249; Mon, 23 Sep 2019 02:03:27 -0700 (PDT) Date: Mon, 23 Sep 2019 02:02:42 -0700 In-Reply-To: <20190923090249.127984-1-brendanhiggins@google.com> Message-Id: <20190923090249.127984-13-brendanhiggins@google.com> Mime-Version: 1.0 References: <20190923090249.127984-1-brendanhiggins@google.com> X-Mailer: git-send-email 2.23.0.351.gc4317032e6-goog Subject: [PATCH v18 12/19] kunit: test: add tests for KUnit managed resources 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, torvalds@linux-foundation.org, Avinash Kondareddy , Brendan Higgins Sender: linux-kbuild-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kbuild@vger.kernel.org From: Avinash Kondareddy 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 Signed-off-by: Brendan Higgins Reviewed-by: Greg Kroah-Hartman Reviewed-by: Logan Gunthorpe Reviewed-by: Stephen Boyd --- lib/kunit/test-test.c | 228 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 228 insertions(+) diff --git a/lib/kunit/test-test.c b/lib/kunit/test-test.c index e0ab4bd546ea..5ebe059d16e2 100644 --- a/lib/kunit/test-test.c +++ b/lib/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);