const expect = @import("std").testing.expect;

var foo: u8 align(4) = 100;

test "global variable alignment" {
    try expect(@typeInfo(@TypeOf(&foo)).pointer.alignment == 4);
    try expect(@TypeOf(&foo) == *align(4) u8);
    const as_pointer_to_array: *align(4) [1]u8 = &foo;
    const as_slice: []align(4) u8 = as_pointer_to_array;
    const as_unaligned_slice: []u8 = as_slice;
    try expect(as_unaligned_slice[0] == 100);
}

fn derp() align(@sizeOf(usize) * 2) i32 {
    return 1234;
}
fn noop1() align(1) void {}
fn noop4() align(4) void {}

test "function alignment" {
    try expect(derp() == 1234);
    try expect(@TypeOf(derp) == fn () i32);
    try expect(@TypeOf(&derp) == *align(@sizeOf(usize) * 2) const fn () i32);

    noop1();
    try expect(@TypeOf(noop1) == fn () void);
    try expect(@TypeOf(&noop1) == *align(1) const fn () void);

    noop4();
    try expect(@TypeOf(noop4) == fn () void);
    try expect(@TypeOf(&noop4) == *align(4) const fn () void);
}

// test