import os

// On the `-os browser` target, integer-to-string (`int.str()`), `println(int)`,
// string interpolation/concat of integers, and the `min_int`/`max_int` builtin
// constants used to fail — their implementations live in
// `vlib/builtin/wasm/int_notd_no_imports.v` / `string_notd_no_imports.v`, which
// were only compiled for `-os wasi`. They are now in the shared
// `vlib/builtin/wasm/` dir, so browser builds pick them up too.
fn test_wasm_browser_target_can_format_integers() {
    vexe := os.quoted_path(@VEXE)
    wrkdir := os.join_path(os.vtmp_dir(), 'wasm_browser_int_tests')
    os.mkdir_all(wrkdir)!
    defer {
        os.rmdir_all(wrkdir) or {}
    }

    source_path := os.join_path(wrkdir, 'ints.v')
    output_path := os.join_path(wrkdir, 'ints.wasm')
    source := [
        'pub fn main() {',
        '\tprintln(42)', // println(int) needs int.str()
        '\tn := 7',
        "\tprintln('value=' + n.str())", // explicit int.str() + string concat
        '\t_ = max_int', // min_int/max_int builtin consts
        '\t_ = min_int',
        '}',
    ].join_lines()
    os.write_file(source_path, source)!

    res :=
        os.execute('${vexe} -b wasm -os browser -o ${os.quoted_path(output_path)} ${os.quoted_path(source_path)}')
    assert res.exit_code == 0, 'browser integer formatting failed to compile: ${res.output}'
    assert os.exists(output_path), 'missing browser wasm output'
}