package time_test;

import time;

@test fn addzero() void = {
	let a: time.instant;
	a.sec = 100i64; a.nsec = 500i64;
	let r = time.add(a, 0i64);
	assert(!(r.sec != 100i64));
	assert(!(r.nsec != 500i64));
};

@test fn addpos_nocarry() void = {
	let a: time.instant;
	a.sec = 10i64; a.nsec = 100i64;
	let r = time.add(a, 200i64);
	assert(!(r.sec != 10i64));
	assert(!(r.nsec != 300i64));
};

@test fn addpos_carry() void = {
	let a: time.instant;
	a.sec = 10i64; a.nsec = 999999900i64;
	let r = time.add(a, 200i64);
	assert(!(r.sec != 11i64));
	assert(!(r.nsec != 100i64));
};

@test fn addpos_fullsecond() void = {
	let a: time.instant;
	a.sec = 5i64; a.nsec = 0i64;
	let r = time.add(a, (time.second: i64) * 3i64);
	assert(!(r.sec != 8i64));
	assert(!(r.nsec != 0i64));
};

@test fn addneg_noborrow() void = {
	let a: time.instant;
	a.sec = 10i64; a.nsec = 500i64;
	let r = time.add(a, -100i64);
	assert(!(r.sec != 10i64));
	assert(!(r.nsec != 400i64));
};

@test fn addneg_borrow() void = {
	let a: time.instant;
	a.sec = 10i64; a.nsec = 100i64;
	let r = time.add(a, -200i64);
	assert(!(r.sec != 9i64));
	assert(!(r.nsec != 999999900i64));
};

@test fn diffsimple() void = {
	let a: time.instant; a.sec = 10i64; a.nsec = 100i64;
	let b: time.instant; b.sec = 12i64; b.nsec = 300i64;
	let d: i64 = time.diff(a, b): i64;
	// b - a = 2.0000002 sec = 2_000_000_200 ns
	assert(!(d != 2000000200i64));
};

@test fn diffneg() void = {
	let a: time.instant; a.sec = 12i64; a.nsec = 300i64;
	let b: time.instant; b.sec = 10i64; b.nsec = 100i64;
	let d: i64 = time.diff(a, b): i64;
	assert(!(d != -2000000200i64));
};

@test fn comparelt() void = {
	let a: time.instant; a.sec = 1i64; a.nsec = 0i64;
	let b: time.instant; b.sec = 2i64; b.nsec = 0i64;
	assert(!(time.compare(a, b) != -1i8));
};

@test fn comparegt() void = {
	let a: time.instant; a.sec = 2i64; a.nsec = 0i64;
	let b: time.instant; b.sec = 1i64; b.nsec = 0i64;
	assert(!(time.compare(a, b) != 1i8));
};

@test fn compareeq() void = {
	let a: time.instant; a.sec = 5i64; a.nsec = 42i64;
	let b: time.instant; b.sec = 5i64; b.nsec = 42i64;
	assert(!(time.compare(a, b) != 0i8));
};

@test fn comparensec_only() void = {
	let a: time.instant; a.sec = 5i64; a.nsec = 100i64;
	let b: time.instant; b.sec = 5i64; b.nsec = 200i64;
	assert(!(time.compare(a, b) != -1i8));
	assert(!(time.compare(b, a) !=  1i8));
};