BlackMATov/promise.hpp
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is_promise, is_promise_r, make_resolved_promise, make_rejected_promise

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This commit is contained in:
Matvey Cherevko
2018-12-09 09:40:36 +07:00
parent fda41ab6b1
commit 90f8c0f91e
2 changed files with 203 additions and 22 deletions
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112
tests.cpp
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@@ -6,6 +6,9 @@ namespace pr = promise_hpp;
namespace
{
struct obj_t {
};
bool check_hello_fail_exception(std::exception_ptr e) {
try {
std::rethrow_exception(e);
@@ -17,6 +20,79 @@ namespace
}
}
TEST_CASE("is_promise") {
SECTION("positive") {
static_assert(
pr::is_promise<pr::promise<void>>::value,
"unit test fail");
static_assert(
pr::is_promise<const pr::promise<void>>::value,
"unit test fail");
static_assert(
pr::is_promise<const volatile pr::promise<void>>::value,
"unit test fail");
static_assert(
pr::is_promise<pr::promise<int>>::value,
"unit test fail");
static_assert(
pr::is_promise<const pr::promise<int>>::value,
"unit test fail");
static_assert(
pr::is_promise<const volatile pr::promise<int>>::value,
"unit test fail");
}
SECTION("negative") {
static_assert(
!pr::is_promise<pr::promise<void>&>::value,
"unit test fail");
static_assert(
!pr::is_promise<const pr::promise<void>*>::value,
"unit test fail");
static_assert(
!pr::is_promise<const volatile pr::promise<int>&>::value,
"unit test fail");
static_assert(
!pr::is_promise<int>::value,
"unit test fail");
static_assert(
!pr::is_promise<void>::value,
"unit test fail");
static_assert(
!pr::is_promise<const volatile int>::value,
"unit test fail");
}
}
TEST_CASE("is_promise_r") {
SECTION("positive") {
static_assert(
pr::is_promise_r<void, pr::promise<void>>::value,
"unit test fail");
static_assert(
pr::is_promise_r<int, const pr::promise<int>>::value,
"unit test fail");
static_assert(
pr::is_promise_r<long, const pr::promise<int>>::value,
"unit test fail");
}
SECTION("negative") {
static_assert(
!pr::is_promise_r<void, pr::promise<int>>::value,
"unit test fail");
static_assert(
!pr::is_promise_r<void, const pr::promise<int>>::value,
"unit test fail");
static_assert(
!pr::is_promise_r<int, pr::promise<obj_t>>::value,
"unit test fail");
static_assert(
!pr::is_promise_r<long, int>::value,
"unit test fail");
}
}
TEST_CASE("promise") {
SECTION("resolved") {
{
@@ -191,6 +267,42 @@ TEST_CASE("promise") {
REQUIRE(call_fail_with_logic_error);
}
}
SECTION("make_resolved_promise") {
{
bool call_check = false;
pr::make_resolved_promise()
.then([&call_check]{
call_check = true;
});
REQUIRE(call_check);
}
{
int check_42_int = 0;
pr::make_resolved_promise(42)
.then([&check_42_int](int value){
check_42_int = value;
});
REQUIRE(check_42_int == 42);
}
}
SECTION("make_rejected_promise") {
{
bool call_fail_with_logic_error = false;
pr::make_rejected_promise<int>(std::logic_error("hello fail"))
.fail([&call_fail_with_logic_error](std::exception_ptr e){
call_fail_with_logic_error = check_hello_fail_exception(e);
});
REQUIRE(call_fail_with_logic_error);
}
{
bool call_fail_with_logic_error = 0;
pr::make_rejected_promise(std::logic_error("hello fail"))
.fail([&call_fail_with_logic_error](std::exception_ptr e){
call_fail_with_logic_error = check_hello_fail_exception(e);
});
REQUIRE(call_fail_with_logic_error);
}
}
SECTION("exceptions") {
{
bool not_call_then_on_reject = true;