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;
Date:   Thu,  4 Apr 2019 15:06:46 -0700
In-Reply-To: <20190404220652.19765-1-brendanhiggins@google.com>
Message-Id: <20190404220652.19765-12-brendanhiggins@google.com>
Mime-Version: 1.0
References: <20190404220652.19765-1-brendanhiggins@google.com>
Subject: [PATCH v1 11/17] kunit: test: add test managed resource tests
From:   Brendan Higgins <brendanhiggins@google.com>
To:     corbet@lwn.net, frowand.list@gmail.com, keescook@google.com,
        kieran.bingham@ideasonboard.com, mcgrof@kernel.org,
        robh@kernel.org, shuah@kernel.org, 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,
        dan.j.williams@intel.com, daniel@ffwll.ch,
        gregkh@linuxfoundation.org, jdike@addtoit.com, joel@jms.id.au,
        julia.lawall@lip6.fr, khilman@baylibre.com, knut.omang@oracle.com,
        mpe@ellerman.id.au, pmladek@suse.com, richard@nod.at,
        rostedt@goodmis.org, wfg@linux.intel.com,
        Avinash Kondareddy <akndr41@gmail.com>,
        Brendan Higgins <brendanhiggins@google.com>
Content-Type: text/plain; charset="UTF-8"
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: Avinash Kondareddy <akndr41@gmail.com>

Tests how tests interact with test managed resources in their lifetime.

Signed-off-by: Avinash Kondareddy <akndr41@gmail.com>
Signed-off-by: Brendan Higgins <brendanhiggins@google.com>
---
 kunit/test-test.c | 122 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)

diff --git a/kunit/test-test.c b/kunit/test-test.c
index 4bd7a34d0a6cb..54add8ca418a0 100644
--- a/kunit/test-test.c
+++ b/kunit/test-test.c
@@ -135,3 +135,125 @@ static struct kunit_module kunit_try_catch_test_module = {
 	.test_cases = kunit_try_catch_test_cases,
 };
 module_test(kunit_try_catch_test_module);
+
+/*
+ * 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;
+};
+
+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_resource(&ctx->test,
+				   fake_resource_init,
+				   fake_resource_free,
+				   ctx);
+
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, res);
+	KUNIT_EXPECT_EQ(test, &ctx->is_resource_initialized, res->allocation);
+	KUNIT_EXPECT_TRUE(test, list_is_last(&res->node, &ctx->test.resources));
+	KUNIT_EXPECT_EQ(test, free, res->free);
+}
+
+static void kunit_resource_test_free_resource(struct kunit *test)
+{
+	struct kunit_test_resource_context *ctx = test->priv;
+	struct kunit_resource *res = kunit_alloc_resource(&ctx->test,
+							  fake_resource_init,
+							  fake_resource_free,
+							  ctx);
+
+	kunit_free_resource(&ctx->test, res);
+
+	KUNIT_EXPECT_EQ(test, false, 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_resource(&ctx->test,
+						    fake_resource_init,
+						    fake_resource_free,
+						    ctx);
+	}
+
+	kunit_cleanup(&ctx->test);
+
+	KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
+}
+
+static int kunit_resource_test_init(struct kunit *test)
+{
+	struct kunit_test_resource_context *ctx =
+			kzalloc(sizeof(*ctx), GFP_KERNEL);
+
+	if (!ctx)
+		return -ENOMEM;
+
+	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_free_resource),
+	KUNIT_CASE(kunit_resource_test_cleanup_resources),
+	{},
+};
+
+static struct kunit_module kunit_resource_test_module = {
+	.name = "kunit-resource-test",
+	.init = kunit_resource_test_init,
+	.exit = kunit_resource_test_exit,
+	.test_cases = kunit_resource_test_cases,
+};
+module_test(kunit_resource_test_module);
-- 
2.21.0.392.gf8f6787159e-goog