zig/test/behavior/hasfield.zig
2022-03-11 12:59:20 -07:00

50 lines
1.4 KiB
Zig

const expect = @import("std").testing.expect;
const builtin = @import("builtin");
test "@hasField" {
const struc = struct {
a: i32,
b: []u8,
pub const nope = 1;
};
try expect(@hasField(struc, "a") == true);
try expect(@hasField(struc, "b") == true);
try expect(@hasField(struc, "non-existant") == false);
try expect(@hasField(struc, "nope") == false);
const unin = union {
a: u64,
b: []u16,
pub const nope = 1;
};
try expect(@hasField(unin, "a") == true);
try expect(@hasField(unin, "b") == true);
try expect(@hasField(unin, "non-existant") == false);
try expect(@hasField(unin, "nope") == false);
const enm = enum {
a,
b,
pub const nope = 1;
};
try expect(@hasField(enm, "a") == true);
try expect(@hasField(enm, "b") == true);
try expect(@hasField(enm, "non-existant") == false);
try expect(@hasField(enm, "nope") == false);
const anon = @TypeOf(.{ .a = 1 });
try expect(@hasField(anon, "a") == true);
try expect(@hasField(anon, "b") == false);
const tuple = @TypeOf(.{ 1, 2 });
try expect(@hasField(tuple, "a") == false);
try expect(@hasField(tuple, "b") == false);
try expect(@hasField(tuple, "0") == true);
try expect(@hasField(tuple, "1") == true);
try expect(@hasField(tuple, "2") == false);
try expect(@hasField(tuple, "9999999999999999999999999") == false);
}