31 lines
626 B
Zig
31 lines
626 B
Zig
const assert = @import("std").debug.assert;
|
|
|
|
var read_count: u64 = 0;
|
|
|
|
fn readOnce() %u64 {
|
|
read_count += 1;
|
|
return read_count;
|
|
}
|
|
|
|
error InvalidDebugInfo;
|
|
|
|
const FormValue = union(enum) {
|
|
Address: u64,
|
|
Other: bool,
|
|
};
|
|
|
|
fn doThing(form_id: u64) %FormValue {
|
|
return switch (form_id) {
|
|
17 => FormValue { .Address = try readOnce() },
|
|
else => error.InvalidDebugInfo,
|
|
};
|
|
}
|
|
|
|
test "switch prong returns error enum" {
|
|
switch (doThing(17) catch unreachable) {
|
|
FormValue.Address => |payload| { assert(payload == 1); },
|
|
else => unreachable,
|
|
}
|
|
assert(read_count == 1);
|
|
}
|