use super::split_string;use super::truncate_middle_chars;use super::truncate_middle_with_token_budget;use pretty_assertions::assert_eq;#[test]fn split_string_works() {    assert_eq!(        split_string(            "hello world",            /*beginning_bytes*/ 5,            /*end_bytes*/ 5        ),        (1, "hello", "world")    );    assert_eq!(        split_string("abc", /*beginning_bytes*/ 0, /*end_bytes*/ 0),        (3, "", "")    );}#[test]fn split_string_handles_empty_string() {    assert_eq!(        split_string("", /*beginning_bytes*/ 4, /*end_bytes*/ 4),        (0, "", "")    );}#[test]fn split_string_only_keeps_prefix_when_tail_budget_is_zero() {    assert_eq!(        split_string("abcdef", /*beginning_bytes*/ 3, /*end_bytes*/ 0),        (3, "abc", "")    );}#[test]fn split_string_only_keeps_suffix_when_prefix_budget_is_zero() {    assert_eq!(        split_string("abcdef", /*beginning_bytes*/ 0, /*end_bytes*/ 3),        (3, "", "def")    );}#[test]fn split_string_handles_overlapping_budgets_without_removal() {    assert_eq!(        split_string("abcdef", /*beginning_bytes*/ 4, /*end_bytes*/ 4),        (0, "abcd", "ef")    );}#[test]fn split_string_respects_utf8_boundaries() {    assert_eq!(        split_string("😀abc😀", /*beginning_bytes*/ 5, /*end_bytes*/ 5),        (1, "😀a", "c😀")    );    assert_eq!(        split_string(            "😀😀😀😀😀",            /*beginning_bytes*/ 1,            /*end_bytes*/ 1        ),        (5, "", "")    );    assert_eq!(        split_string(            "😀😀😀😀😀",            /*beginning_bytes*/ 7,            /*end_bytes*/ 7        ),        (3, "😀", "😀")    );    assert_eq!(        split_string(            "😀😀😀😀😀",            /*beginning_bytes*/ 8,            /*end_bytes*/ 8        ),        (1, "😀😀", "😀😀")    );}#[test]fn truncate_with_token_budget_returns_original_when_under_limit() {    let s = "short output";    let limit = 100;    let (out, original) = truncate_middle_with_token_budget(s, limit);    assert_eq!(out, s);    assert_eq!(original, None);}#[test]fn truncate_with_token_budget_reports_truncation_at_zero_limit() {    let s = "abcdef";    let (out, original) = truncate_middle_with_token_budget(s, /*max_tokens*/ 0);    assert_eq!(out, "…2 tokens truncated…");    assert_eq!(original, Some(2));}#[test]fn truncate_middle_tokens_handles_utf8_content() {    let s = "😀😀😀😀😀😀😀😀😀😀\nsecond line with text\n";    let (out, tokens) = truncate_middle_with_token_budget(s, /*max_tokens*/ 8);    assert_eq!(out, "😀😀😀😀…8 tokens truncated… line with text\n");    assert_eq!(tokens, Some(16));}#[test]fn truncate_middle_bytes_handles_utf8_content() {    let s = "😀😀😀😀😀😀😀😀😀😀\nsecond line with text\n";    let out = truncate_middle_chars(s, /*max_bytes*/ 20);    assert_eq!(out, "😀😀…21 chars truncated…with text\n");}