444 lines
11 KiB
C
444 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* KUnit test for core test infrastructure.
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*
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* Copyright (C) 2019, Google LLC.
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* Author: Brendan Higgins <brendanhiggins@google.com>
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*/
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#include <kunit/test.h>
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#include "try-catch-impl.h"
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struct kunit_try_catch_test_context {
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struct kunit_try_catch *try_catch;
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bool function_called;
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};
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static void kunit_test_successful_try(void *data)
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{
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struct kunit *test = data;
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struct kunit_try_catch_test_context *ctx = test->priv;
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ctx->function_called = true;
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}
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static void kunit_test_no_catch(void *data)
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{
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struct kunit *test = data;
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KUNIT_FAIL(test, "Catch should not be called\n");
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}
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static void kunit_test_try_catch_successful_try_no_catch(struct kunit *test)
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{
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struct kunit_try_catch_test_context *ctx = test->priv;
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struct kunit_try_catch *try_catch = ctx->try_catch;
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kunit_try_catch_init(try_catch,
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test,
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kunit_test_successful_try,
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kunit_test_no_catch);
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kunit_try_catch_run(try_catch, test);
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KUNIT_EXPECT_TRUE(test, ctx->function_called);
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}
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static void kunit_test_unsuccessful_try(void *data)
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{
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struct kunit *test = data;
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struct kunit_try_catch_test_context *ctx = test->priv;
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struct kunit_try_catch *try_catch = ctx->try_catch;
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kunit_try_catch_throw(try_catch);
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KUNIT_FAIL(test, "This line should never be reached\n");
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}
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static void kunit_test_catch(void *data)
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{
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struct kunit *test = data;
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struct kunit_try_catch_test_context *ctx = test->priv;
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ctx->function_called = true;
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}
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static void kunit_test_try_catch_unsuccessful_try_does_catch(struct kunit *test)
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{
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struct kunit_try_catch_test_context *ctx = test->priv;
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struct kunit_try_catch *try_catch = ctx->try_catch;
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kunit_try_catch_init(try_catch,
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test,
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kunit_test_unsuccessful_try,
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kunit_test_catch);
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kunit_try_catch_run(try_catch, test);
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KUNIT_EXPECT_TRUE(test, ctx->function_called);
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}
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static int kunit_try_catch_test_init(struct kunit *test)
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{
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struct kunit_try_catch_test_context *ctx;
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ctx = kunit_kzalloc(test, sizeof(*ctx), GFP_KERNEL);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
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test->priv = ctx;
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ctx->try_catch = kunit_kmalloc(test,
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sizeof(*ctx->try_catch),
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GFP_KERNEL);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx->try_catch);
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return 0;
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}
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static struct kunit_case kunit_try_catch_test_cases[] = {
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KUNIT_CASE(kunit_test_try_catch_successful_try_no_catch),
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KUNIT_CASE(kunit_test_try_catch_unsuccessful_try_does_catch),
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{}
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};
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static struct kunit_suite kunit_try_catch_test_suite = {
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.name = "kunit-try-catch-test",
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.init = kunit_try_catch_test_init,
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.test_cases = kunit_try_catch_test_cases,
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};
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/*
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* Context for testing test managed resources
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* is_resource_initialized is used to test arbitrary resources
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*/
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struct kunit_test_resource_context {
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struct kunit test;
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bool is_resource_initialized;
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int allocate_order[2];
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int free_order[2];
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};
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static int fake_resource_init(struct kunit_resource *res, void *context)
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{
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struct kunit_test_resource_context *ctx = context;
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res->data = &ctx->is_resource_initialized;
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ctx->is_resource_initialized = true;
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return 0;
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}
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static void fake_resource_free(struct kunit_resource *res)
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{
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bool *is_resource_initialized = res->data;
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*is_resource_initialized = false;
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}
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static void kunit_resource_test_init_resources(struct kunit *test)
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{
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struct kunit_test_resource_context *ctx = test->priv;
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kunit_init_test(&ctx->test, "testing_test_init_test", NULL);
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KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
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}
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static void kunit_resource_test_alloc_resource(struct kunit *test)
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{
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struct kunit_test_resource_context *ctx = test->priv;
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struct kunit_resource *res;
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kunit_resource_free_t free = fake_resource_free;
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res = kunit_alloc_and_get_resource(&ctx->test,
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fake_resource_init,
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fake_resource_free,
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GFP_KERNEL,
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ctx);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, res);
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KUNIT_EXPECT_PTR_EQ(test,
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&ctx->is_resource_initialized,
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(bool *)res->data);
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KUNIT_EXPECT_TRUE(test, list_is_last(&res->node, &ctx->test.resources));
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KUNIT_EXPECT_PTR_EQ(test, free, res->free);
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kunit_put_resource(res);
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}
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/*
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* Note: tests below use kunit_alloc_and_get_resource(), so as a consequence
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* they have a reference to the associated resource that they must release
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* via kunit_put_resource(). In normal operation, users will only
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* have to do this for cases where they use kunit_find_resource(), and the
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* kunit_alloc_resource() function will be used (which does not take a
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* resource reference).
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*/
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static void kunit_resource_test_destroy_resource(struct kunit *test)
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{
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struct kunit_test_resource_context *ctx = test->priv;
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struct kunit_resource *res = kunit_alloc_and_get_resource(
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&ctx->test,
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fake_resource_init,
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fake_resource_free,
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GFP_KERNEL,
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ctx);
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kunit_put_resource(res);
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KUNIT_ASSERT_FALSE(test,
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kunit_destroy_resource(&ctx->test,
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kunit_resource_instance_match,
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res->data));
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KUNIT_EXPECT_FALSE(test, ctx->is_resource_initialized);
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KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
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}
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static void kunit_resource_test_cleanup_resources(struct kunit *test)
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{
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int i;
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struct kunit_test_resource_context *ctx = test->priv;
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struct kunit_resource *resources[5];
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for (i = 0; i < ARRAY_SIZE(resources); i++) {
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resources[i] = kunit_alloc_and_get_resource(&ctx->test,
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fake_resource_init,
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fake_resource_free,
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GFP_KERNEL,
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ctx);
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kunit_put_resource(resources[i]);
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}
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kunit_cleanup(&ctx->test);
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KUNIT_EXPECT_TRUE(test, list_empty(&ctx->test.resources));
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}
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static void kunit_resource_test_mark_order(int order_array[],
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size_t order_size,
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int key)
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{
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int i;
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for (i = 0; i < order_size && order_array[i]; i++)
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;
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order_array[i] = key;
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}
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#define KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, order_field, key) \
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kunit_resource_test_mark_order(ctx->order_field, \
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ARRAY_SIZE(ctx->order_field), \
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key)
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static int fake_resource_2_init(struct kunit_resource *res, void *context)
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{
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struct kunit_test_resource_context *ctx = context;
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KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, allocate_order, 2);
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res->data = ctx;
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return 0;
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}
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static void fake_resource_2_free(struct kunit_resource *res)
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{
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struct kunit_test_resource_context *ctx = res->data;
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KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, free_order, 2);
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}
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static int fake_resource_1_init(struct kunit_resource *res, void *context)
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{
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struct kunit_test_resource_context *ctx = context;
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struct kunit_resource *res2;
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res2 = kunit_alloc_and_get_resource(&ctx->test,
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fake_resource_2_init,
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fake_resource_2_free,
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GFP_KERNEL,
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ctx);
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KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, allocate_order, 1);
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res->data = ctx;
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kunit_put_resource(res2);
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return 0;
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}
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static void fake_resource_1_free(struct kunit_resource *res)
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{
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struct kunit_test_resource_context *ctx = res->data;
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KUNIT_RESOURCE_TEST_MARK_ORDER(ctx, free_order, 1);
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}
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/*
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* TODO(brendanhiggins@google.com): replace the arrays that keep track of the
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* order of allocation and freeing with strict mocks using the IN_SEQUENCE macro
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* to assert allocation and freeing order when the feature becomes available.
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*/
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static void kunit_resource_test_proper_free_ordering(struct kunit *test)
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{
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struct kunit_test_resource_context *ctx = test->priv;
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struct kunit_resource *res;
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/* fake_resource_1 allocates a fake_resource_2 in its init. */
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res = kunit_alloc_and_get_resource(&ctx->test,
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fake_resource_1_init,
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fake_resource_1_free,
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GFP_KERNEL,
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ctx);
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/*
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* Since fake_resource_2_init calls KUNIT_RESOURCE_TEST_MARK_ORDER
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* before returning to fake_resource_1_init, it should be the first to
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* put its key in the allocate_order array.
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*/
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KUNIT_EXPECT_EQ(test, ctx->allocate_order[0], 2);
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KUNIT_EXPECT_EQ(test, ctx->allocate_order[1], 1);
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kunit_put_resource(res);
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kunit_cleanup(&ctx->test);
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/*
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* Because fake_resource_2 finishes allocation before fake_resource_1,
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* fake_resource_1 should be freed first since it could depend on
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* fake_resource_2.
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*/
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KUNIT_EXPECT_EQ(test, ctx->free_order[0], 1);
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KUNIT_EXPECT_EQ(test, ctx->free_order[1], 2);
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}
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static void kunit_resource_test_static(struct kunit *test)
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{
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struct kunit_test_resource_context ctx;
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struct kunit_resource res;
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KUNIT_EXPECT_EQ(test, kunit_add_resource(test, NULL, NULL, &res, &ctx),
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0);
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KUNIT_EXPECT_PTR_EQ(test, res.data, (void *)&ctx);
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kunit_cleanup(test);
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KUNIT_EXPECT_TRUE(test, list_empty(&test->resources));
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}
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static void kunit_resource_test_named(struct kunit *test)
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{
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struct kunit_resource res1, res2, *found = NULL;
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struct kunit_test_resource_context ctx;
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KUNIT_EXPECT_EQ(test,
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kunit_add_named_resource(test, NULL, NULL, &res1,
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"resource_1", &ctx),
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0);
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KUNIT_EXPECT_PTR_EQ(test, res1.data, (void *)&ctx);
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KUNIT_EXPECT_EQ(test,
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kunit_add_named_resource(test, NULL, NULL, &res1,
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"resource_1", &ctx),
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-EEXIST);
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KUNIT_EXPECT_EQ(test,
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kunit_add_named_resource(test, NULL, NULL, &res2,
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"resource_2", &ctx),
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0);
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found = kunit_find_named_resource(test, "resource_1");
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KUNIT_EXPECT_PTR_EQ(test, found, &res1);
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if (found)
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kunit_put_resource(&res1);
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KUNIT_EXPECT_EQ(test, kunit_destroy_named_resource(test, "resource_2"),
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0);
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kunit_cleanup(test);
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KUNIT_EXPECT_TRUE(test, list_empty(&test->resources));
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}
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static int kunit_resource_test_init(struct kunit *test)
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{
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struct kunit_test_resource_context *ctx =
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kzalloc(sizeof(*ctx), GFP_KERNEL);
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KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ctx);
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test->priv = ctx;
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kunit_init_test(&ctx->test, "test_test_context", NULL);
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return 0;
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}
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static void kunit_resource_test_exit(struct kunit *test)
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{
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struct kunit_test_resource_context *ctx = test->priv;
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kunit_cleanup(&ctx->test);
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kfree(ctx);
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}
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static struct kunit_case kunit_resource_test_cases[] = {
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KUNIT_CASE(kunit_resource_test_init_resources),
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KUNIT_CASE(kunit_resource_test_alloc_resource),
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KUNIT_CASE(kunit_resource_test_destroy_resource),
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KUNIT_CASE(kunit_resource_test_cleanup_resources),
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KUNIT_CASE(kunit_resource_test_proper_free_ordering),
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KUNIT_CASE(kunit_resource_test_static),
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KUNIT_CASE(kunit_resource_test_named),
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{}
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};
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static struct kunit_suite kunit_resource_test_suite = {
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.name = "kunit-resource-test",
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.init = kunit_resource_test_init,
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.exit = kunit_resource_test_exit,
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.test_cases = kunit_resource_test_cases,
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};
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static void kunit_log_test(struct kunit *test);
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static struct kunit_case kunit_log_test_cases[] = {
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KUNIT_CASE(kunit_log_test),
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{}
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};
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static struct kunit_suite kunit_log_test_suite = {
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.name = "kunit-log-test",
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.test_cases = kunit_log_test_cases,
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};
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static void kunit_log_test(struct kunit *test)
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{
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struct kunit_suite *suite = &kunit_log_test_suite;
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kunit_log(KERN_INFO, test, "put this in log.");
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kunit_log(KERN_INFO, test, "this too.");
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kunit_log(KERN_INFO, suite, "add to suite log.");
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kunit_log(KERN_INFO, suite, "along with this.");
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#ifdef CONFIG_KUNIT_DEBUGFS
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KUNIT_EXPECT_NOT_ERR_OR_NULL(test,
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strstr(test->log, "put this in log."));
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KUNIT_EXPECT_NOT_ERR_OR_NULL(test,
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strstr(test->log, "this too."));
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KUNIT_EXPECT_NOT_ERR_OR_NULL(test,
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strstr(suite->log, "add to suite log."));
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KUNIT_EXPECT_NOT_ERR_OR_NULL(test,
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strstr(suite->log, "along with this."));
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#else
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KUNIT_EXPECT_PTR_EQ(test, test->log, (char *)NULL);
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KUNIT_EXPECT_PTR_EQ(test, suite->log, (char *)NULL);
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#endif
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}
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kunit_test_suites(&kunit_try_catch_test_suite, &kunit_resource_test_suite,
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&kunit_log_test_suite);
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MODULE_LICENSE("GPL v2");
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