// Copyright (c) 2021 Christoffer Lerno. All rights reserved.
// Use of this source code is governed by the MIT license
// a copy of which can be found in the LICENSE_STDLIB file.
module std::runtime;

struct VirtualAny
{
    void* ptr;
    typeid type_id;
}

struct VirtualContainer
{
    void* ptr;
    void* impl_ptr;
}

struct SubArrayContainer
{
    void* ptr;
    usz len;
}

struct VarArrayHeader
{
    usz size;
    usz capacity;
    void *allocator;
}

define TestFn = fn void!();

struct TestRunner
{
	String[] test_names;
	TestFn[] test_fns;
	JmpBuf buf;
}

fn TestRunner test_runner_create()
{
	return TestRunner {
		.test_fns = $$TEST_FNS,
		.test_names = $$TEST_NAMES,
	};
}

import libc;

private TestRunner* current_runner;
fn void test_panic(String message, String file, String function, uint line)
{
	io::println("[error]");
	io::printfn("\n Error: %s", message);
	io::printfn("  - in %s %s:%s.\n", function, file, line);
	libc::longjmp(&current_runner.buf, 1);
}

fn bool TestRunner.run(TestRunner* runner)
{
	current_runner = runner;
	PanicFn old_panic = builtin::panic;
	defer builtin::panic = old_panic;
	builtin::panic = &test_panic;
	int tests_passed = 0;
	int tests = runner.test_names.len;
	io::println("----- TESTS -----");
	foreach(i, String name : runner.test_names)
	{
		io::printf("Testing %s ... ", name);
		if (libc::setjmp(&runner.buf) == 0)
		{
			if (catch err = runner.test_fns[i]())
			{
				io::println("[failed]");
				continue;
			}
			io::println("[ok]");
			tests_passed++;
		}
	}
	io::printfn("\n%d test(s) run.\n", tests);
	io::print("Test Result: ");
	if (tests_passed < tests)
	{
		io::print("FAILED");
	}
	else
	{
		io::print("ok");
	}
	io::printfn(". %d passed, %d failed.", tests_passed, tests - tests_passed);
	return tests == tests_passed;
}

fn bool __run_default_test_runner()
{
	return test_runner_create().run();
}