zig/test/cases/try.zig
Andrew Kelley af536ac343 introduce new test syntax
* remove setFnTest builtin
 * add test "name" { ... } syntax
 * remove --check-unused argument. functions are always lazy now.
2017-03-16 16:02:35 -04:00

60 lines
1.0 KiB
Zig

const assert = @import("std").debug.assert;
test "tryOnErrorUnion" {
tryOnErrorUnionImpl();
comptime tryOnErrorUnionImpl();
}
fn tryOnErrorUnionImpl() {
const x = try (const val = returnsTen()) {
val + 1
} else |err| switch (err) {
error.ItBroke, error.NoMem => 1,
error.CrappedOut => i32(2),
};
assert(x == 11);
}
error ItBroke;
error NoMem;
error CrappedOut;
fn returnsTen() -> %i32 {
10
}
test "tryWithoutVars" {
const result1 = try (failIfTrue(true)) {
1
} else {
i32(2)
};
assert(result1 == 2);
const result2 = try (failIfTrue(false)) {
1
} else {
i32(2)
};
assert(result2 == 1);
}
fn failIfTrue(ok: bool) -> %void {
if (ok) {
return error.ItBroke;
} else {
return;
}
}
// TODO
//fn tryThenNotExecutedWithAssignment() {
// @setFnTest(this);
//
// try (_ = failIfTrue(true)) {
// @unreachable();
// } else |err| {
// assert(err == error.ItBroke);
// }
//}