zig/test/cases/enum_with_members.zig

28 lines
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Zig

const assert = @import("std").debug.assert;
const mem = @import("std").mem;
const fmt = @import("std").fmt;
const ET = enum {
SINT: i32,
UINT: u32,
pub fn print(a: &const ET, buf: []u8) -> %usize {
return switch (*a) {
ET.SINT => |x| { fmt.formatIntBuf(buf, x, 10, false, 0) },
ET.UINT => |x| { fmt.formatIntBuf(buf, x, 10, false, 0) },
}
}
};
test "enumWithMembers" {
const a = ET.SINT { -42 };
const b = ET.UINT { 42 };
var buf: [20]u8 = undefined;
assert(%%a.print(buf[0...]) == 3);
assert(mem.eql(u8, buf[0...3], "-42"));
assert(%%b.print(buf[0...]) == 2);
assert(mem.eql(u8, buf[0...2], "42"));
}