zig/test/cases/while.zig

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Zig

const assert = @import("std").debug.assert;
test "whileLoop" {
var i : i32 = 0;
while (i < 4) {
i += 1;
}
assert(i == 4);
assert(whileLoop1() == 1);
}
fn whileLoop1() -> i32 {
return whileLoop2();
}
fn whileLoop2() -> i32 {
while (true) {
return 1;
}
}
test "staticEvalWhile" {
assert(static_eval_while_number == 1);
}
const static_eval_while_number = staticWhileLoop1();
fn staticWhileLoop1() -> i32 {
return whileLoop2();
}
fn staticWhileLoop2() -> i32 {
while (true) {
return 1;
}
}
test "continueAndBreak" {
runContinueAndBreakTest();
assert(continue_and_break_counter == 8);
}
var continue_and_break_counter: i32 = 0;
fn runContinueAndBreakTest() {
var i : i32 = 0;
while (true) {
continue_and_break_counter += 2;
i += 1;
if (i < 4) {
continue;
}
break;
}
assert(i == 4);
}
test "returnWithImplicitCastFromWhileLoop" {
%%returnWithImplicitCastFromWhileLoopTest();
}
fn returnWithImplicitCastFromWhileLoopTest() -> %void {
while (true) {
return;
}
}
test "whileWithContinueExpr" {
var sum: i32 = 0;
{var i: i32 = 0; while (i < 10; i += 1) {
if (i == 5) continue;
sum += i;
}}
assert(sum == 40);
}