// EVMC -- Ethereum Client-VM Connector API
// Copyright 2018 The EVMC Authors.
// Licensed under the MIT License. See the LICENSE file.

#include "vmtester.hpp"

#include <evmc/helpers.h>

#include <cstring>

// Compile time checks:

static_assert(sizeof(evmc_uint256be) == 32, "evmc_uint256be is too big");
static_assert(sizeof(evmc_address) == 20, "evmc_address is too big");
static_assert(sizeof(evmc_result) <= 64, "evmc_result does not fit cache line");
static_assert(sizeof(evmc_instance) <= 64, "evmc_instance does not fit cache line");
static_assert(offsetof(evmc_message, code_hash) % 8 == 0, "evmc_message.code_hash not aligned");

// Check enums match int size.
// On GCC/clang the underlying type should be unsigned int, on MSVC int
static_assert(sizeof(evmc_call_kind) == sizeof(int),
              "Enum `evmc_call_kind` is not the size of int");
static_assert(sizeof(evmc_revision) == sizeof(int), "Enum `evmc_revision` is not the size of int");

static constexpr size_t optionalDataSize =
    sizeof(evmc_result) - offsetof(evmc_result, create_address);
static_assert(optionalDataSize == sizeof(evmc_result_optional_storage), "");

TEST_F(evmc_vm_test, abi_version_match)
{
    ASSERT_EQ(vm->abi_version, EVMC_ABI_VERSION);
}

TEST_F(evmc_vm_test, set_option_unknown)
{
    if (vm->set_option)
    {
        int r = vm->set_option(vm, "unknown_option_csk9twq", "v");
        EXPECT_EQ(r, 0);
        r = vm->set_option(vm, "unknown_option_csk9twq", "x");
        EXPECT_EQ(r, 0);
    }
}

TEST_F(evmc_vm_test, set_option_empty_value)
{
    if (vm->set_option)
    {
        int r = vm->set_option(vm, "unknown_option_csk9twq", nullptr);
        EXPECT_EQ(r, 0);
    }
}

TEST_F(evmc_vm_test, name)
{
    ASSERT_NE(vm->name, nullptr);
    EXPECT_GT(std::strlen(vm->name), 0) << "VM name cannot be empty";
}

TEST_F(evmc_vm_test, version)
{
    ASSERT_NE(vm->version, nullptr);
    EXPECT_GT(std::strlen(vm->version), 0) << "VM name cannot be empty";
}

TEST_F(evmc_vm_test, set_tracer)
{
    static const auto tracer_callback = [](evmc_tracer_context*, size_t, evmc_status_code, int64_t,
                                           size_t, const evmc_uint256be*, size_t, size_t, size_t,
                                           const uint8_t*) noexcept {};
    if (vm->set_tracer)
        vm->set_tracer(vm, tracer_callback, nullptr);
}