#
cargo_test_support/
compare.rs

    1//! Routines for comparing and diffing output.
    2//!
    3//! # Deprecated comparisons
    4//!
    5//! Cargo's tests are in transition from internal-only pattern and normalization routines used in
    6//! asserts like [`crate::Execs::with_stdout_contains`] to [`assert_e2e`] and [`assert_ui`].
    7//!
    8//! ## Patterns
    9//!
    10//! Many of these functions support special markup to assist with comparing
    11//! text that may vary or is otherwise uninteresting for the test at hand. The
    12//! supported patterns are:
    13//!
    14//! - `[..]` is a wildcard that matches 0 or more characters on the same line
    15//!   (similar to `.*` in a regex). It is non-greedy.
    16//! - `[EXE]` optionally adds `.exe` on Windows (empty string on other
    17//!   platforms).
    18//! - `[ROOT]` is the path to the test directory's root.
    19//! - `[CWD]` is the working directory of the process that was run.
    20//! - There is a wide range of substitutions (such as `[COMPILING]` or
    21//!   `[WARNING]`) to match cargo's "status" output and allows you to ignore
    22//!   the alignment. See the source of `substitute_macros` for a complete list
    23//!   of substitutions.
    24//! - `[DIRTY-MSVC]` (only when the line starts with it) would be replaced by
    25//!   `[DIRTY]` when `cfg(target_env = "msvc")` or the line will be ignored otherwise.
    26//!   Tests that work around [issue 7358](https://github.com/rust-lang/cargo/issues/7358)
    27//!   can use this to avoid duplicating the `with_stderr` call like:
    28//!   `if cfg!(target_env = "msvc") {e.with_stderr("...[DIRTY]...");} else {e.with_stderr("...");}`.
    29//!
    30//! ## Normalization
    31//!
    32//! In addition to the patterns described above, the strings are normalized
    33//! in such a way to avoid unwanted differences. The normalizations are:
    34//!
    35//! - Raw tab characters are converted to the string `<tab>`. This is helpful
    36//!   so that raw tabs do not need to be written in the expected string, and
    37//!   to avoid confusion of tabs vs spaces.
    38//! - Backslashes are converted to forward slashes to deal with Windows paths.
    39//!   This helps so that all tests can be written assuming forward slashes.
    40//!   Other heuristics are applied to try to ensure Windows-style paths aren't
    41//!   a problem.
    42//! - Carriage returns are removed, which can help when running on Windows.
    43
    44use crate::cross_compile::try_alternate;
    45use crate::paths;
    46use crate::rustc_host;
    47use anyhow::{Result, bail};
    48use snapbox::Data;
    49use snapbox::IntoData;
    50use std::fmt;
    51use std::path::Path;
    52use std::path::PathBuf;
    53use std::str;
    54
    55/// This makes it easier to write regex replacements that are guaranteed to only
    56/// get compiled once
    57macro_rules! regex {
    58    ($re:literal $(,)?) => {{
    59        static RE: std::sync::OnceLock<regex::Regex> = std::sync::OnceLock::new();
    60        RE.get_or_init(|| regex::Regex::new($re).unwrap())
    61    }};
    62}
    63
    64/// Assertion policy for UI tests
    65///
    66/// This emphasizes showing as much content as possible at the cost of more brittleness
    67///
    68/// # Snapshots
    69///
    70/// Updating of snapshots is controlled with the `SNAPSHOTS` environment variable:
    71///
    72/// - `skip`: do not run the tests
    73/// - `ignore`: run the tests but ignore their failure
    74/// - `verify`: run the tests
    75/// - `overwrite`: update the snapshots based on the output of the tests
    76///
    77/// # Patterns
    78///
    79/// - `[..]` is a character wildcard, stopping at line breaks
    80/// - `\n...\n` is a multi-line wildcard
    81/// - `[EXE]` matches the exe suffix for the current platform
    82/// - `[ROOT]` matches [`paths::root()`][crate::paths::root]
    83/// - `[ROOTURL]` matches [`paths::root()`][crate::paths::root] as a URL
    84///
    85/// # Normalization
    86///
    87/// In addition to the patterns described above, text is normalized
    88/// in such a way to avoid unwanted differences. The normalizations are:
    89///
    90/// - Backslashes are converted to forward slashes to deal with Windows paths.
    91///   This helps so that all tests can be written assuming forward slashes.
    92///   Other heuristics are applied to try to ensure Windows-style paths aren't
    93///   a problem.
    94/// - Carriage returns are removed, which can help when running on Windows.
    95///
    96/// # Example
    97///
    98/// ```no_run
    99/// # use cargo_test_support::compare::assert_e2e;
    100/// # use cargo_test_support::file;
    101/// # let p = cargo_test_support::project().build();
    102/// # let stdout = "";
    103/// assert_e2e().eq(stdout, file!["stderr.term.svg"]);
    104/// ```
    105/// ```console
    106/// $ SNAPSHOTS=overwrite cargo test
    107/// ```
    108pub fn assert_ui() -> snapbox::Assert {
    109    let mut subs = snapbox::Redactions::new();
    110    subs.extend(MIN_LITERAL_REDACTIONS.into_iter().cloned())
    111        .unwrap();
    112    add_test_support_redactions(&mut subs);
    113    add_regex_redactions(&mut subs);
    114
    115    snapbox::Assert::new()
    116        .action_env(snapbox::assert::DEFAULT_ACTION_ENV)
    117        .redact_with(subs)
    118}
    119
    120/// Assertion policy for functional end-to-end tests
    121///
    122/// This emphasizes showing as much content as possible at the cost of more brittleness
    123///
    124/// # Snapshots
    125///
    126/// Updating of snapshots is controlled with the `SNAPSHOTS` environment variable:
    127///
    128/// - `skip`: do not run the tests
    129/// - `ignore`: run the tests but ignore their failure
    130/// - `verify`: run the tests
    131/// - `overwrite`: update the snapshots based on the output of the tests
    132///
    133/// # Patterns
    134///
    135/// - `[..]` is a character wildcard, stopping at line breaks
    136/// - `\n...\n` is a multi-line wildcard
    137/// - `[EXE]` matches the exe suffix for the current platform
    138/// - `[ROOT]` matches [`paths::root()`][crate::paths::root]
    139/// - `[ROOTURL]` matches [`paths::root()`][crate::paths::root] as a URL
    140///
    141/// # Normalization
    142///
    143/// In addition to the patterns described above, text is normalized
    144/// in such a way to avoid unwanted differences. The normalizations are:
    145///
    146/// - Backslashes are converted to forward slashes to deal with Windows paths.
    147///   This helps so that all tests can be written assuming forward slashes.
    148///   Other heuristics are applied to try to ensure Windows-style paths aren't
    149///   a problem.
    150/// - Carriage returns are removed, which can help when running on Windows.
    151///
    152/// # Example
    153///
    154/// ```no_run
    155/// # use cargo_test_support::compare::assert_e2e;
    156/// # use cargo_test_support::str;
    157/// # let p = cargo_test_support::project().build();
    158/// assert_e2e().eq(p.read_lockfile(), str![]);
    159/// ```
    160/// ```console
    161/// $ SNAPSHOTS=overwrite cargo test
    162/// ```
    163pub fn assert_e2e() -> snapbox::Assert {
    164    let mut subs = snapbox::Redactions::new();
    165    subs.extend(MIN_LITERAL_REDACTIONS.into_iter().cloned())
    166        .unwrap();
    167    subs.extend(E2E_LITERAL_REDACTIONS.into_iter().cloned())
    168        .unwrap();
    169    add_test_support_redactions(&mut subs);
    170    add_regex_redactions(&mut subs);
    171
    172    snapbox::Assert::new()
    173        .action_env(snapbox::assert::DEFAULT_ACTION_ENV)
    174        .redact_with(subs)
    175}
    176
    177fn add_test_support_redactions(subs: &mut snapbox::Redactions) {
    178    let root = paths::root();
    179    // Use `from_file_path` instead of `from_dir_path` so the trailing slash is
    180    // put in the users output, rather than hidden in the variable
    181    let root_url = url::Url::from_file_path(&root).unwrap().to_string();
    182
    183    subs.insert("[ROOT]", root).unwrap();
    184    subs.insert("[ROOTURL]", root_url).unwrap();
    185    subs.insert("[HOST_TARGET]", rustc_host()).unwrap();
    186    if let Some(alt_target) = try_alternate() {
    187        subs.insert("[ALT_TARGET]", alt_target).unwrap();
    188    }
    189}
    190
    191fn add_regex_redactions(subs: &mut snapbox::Redactions) {
    192    // For e2e tests
    193    subs.insert(
    194        "[ELAPSED]",
    195        regex!(r"\[FINISHED\].*in (?<redacted>[0-9]+(\.[0-9]+)?(m [0-9]+)?)s"),
    196    )
    197    .unwrap();
    198    // for UI tests
    199    subs.insert(
    200        "[ELAPSED]",
    201        regex!(r"Finished.*in (?<redacted>[0-9]+(\.[0-9]+)?(m [0-9]+)?)s"),
    202    )
    203    .unwrap();
    204    // output from libtest
    205    subs.insert(
    206        "[ELAPSED]",
    207        regex!(r"; finished in (?<redacted>[0-9]+(\.[0-9]+)?(m [0-9]+)?)s"),
    208    )
    209    .unwrap();
    210    subs.insert(
    211        "[FILE_NUM]",
    212        regex!(r"\[(REMOVED|SUMMARY)\] (?<redacted>[1-9][0-9]*) files"),
    213    )
    214    .unwrap();
    215    subs.insert(
    216        "[FILE_SIZE]",
    217        regex!(r"(?<redacted>[0-9]+(\.[0-9]+)?([a-zA-Z]i)?)B\s"),
    218    )
    219    .unwrap();
    220    subs.insert(
    221        "[HASH]",
    222        regex!(r"home/\.cargo/registry/(cache|index|src)/-(?<redacted>[a-z0-9]+)"),
    223    )
    224    .unwrap();
    225    subs.insert(
    226        "[HASH]",
    227        regex!(r"\.cargo/target/(?<redacted>[0-9a-f]{2}/[0-9a-f]{14})"),
    228    )
    229    .unwrap();
    230    subs.insert("[HASH]", regex!(r"/[a-z0-9\-_]+-(?<redacted>[0-9a-f]{16})"))
    231        .unwrap();
    232    subs.insert(
    233        "[AVG_ELAPSED]",
    234        regex!(r"(?<redacted>[0-9]+(\.[0-9]+)?) ns/iter"),
    235    )
    236    .unwrap();
    237    subs.insert(
    238        "[JITTER]",
    239        regex!(r"ns/iter \(\+/- (?<redacted>[0-9]+(\.[0-9]+)?)\)"),
    240    )
    241    .unwrap();
    242
    243    // Following 3 subs redact:
    244    //   "1719325877.527949100s, 61549498ns after last build at 1719325877.466399602s"
    245    //   "1719503592.218193216s, 1h 1s after last build at 1719499991.982681034s"
    246    // into "[DIRTY_REASON_NEW_TIME], [DIRTY_REASON_DIFF] after last build at [DIRTY_REASON_OLD_TIME]"
    247    subs.insert(
    248        "[TIME_DIFF_AFTER_LAST_BUILD]",
    249        regex!(r"(?<redacted>[0-9]+(\.[0-9]+)?s, (\s?[0-9]+(\.[0-9]+)?(s|ns|h))+ after last build at [0-9]+(\.[0-9]+)?s)"),
    250       )
    251       .unwrap();
    252}
    253
    254static MIN_LITERAL_REDACTIONS: &[(&str, &str)] = &[
    255    ("[EXE]", std::env::consts::EXE_SUFFIX),
    256    ("[BROKEN_PIPE]", "Broken pipe (os error 32)"),
    257    ("[BROKEN_PIPE]", "The pipe is being closed. (os error 232)"),
    258    // Unix message for an entity was not found
    259    ("[NOT_FOUND]", "No such file or directory (os error 2)"),
    260    // Windows message for an entity was not found
    261    (
    262        "[NOT_FOUND]",
    263        "The system cannot find the file specified. (os error 2)",
    264    ),
    265    (
    266        "[NOT_FOUND]",
    267        "The system cannot find the path specified. (os error 3)",
    268    ),
    269    ("[NOT_FOUND]", "Access is denied. (os error 5)"),
    270    ("[NOT_FOUND]", "program not found"),
    271    // Unix message for exit status
    272    ("[EXIT_STATUS]", "exit status"),
    273    // Windows message for exit status
    274    ("[EXIT_STATUS]", "exit code"),
    275];
    276static E2E_LITERAL_REDACTIONS: &[(&str, &str)] = &[
    277    ("[RUNNING]", "     Running"),
    278    ("[COMPILING]", "   Compiling"),
    279    ("[CHECKING]", "    Checking"),
    280    ("[COMPLETED]", "   Completed"),
    281    ("[CREATED]", "     Created"),
    282    ("[CREATING]", "    Creating"),
    283    ("[CREDENTIAL]", "  Credential"),
    284    ("[DOWNGRADING]", " Downgrading"),
    285    ("[FINISHED]", "    Finished"),
    286    ("[ERROR]", "error:"),
    287    ("[WARNING]", "warning:"),
    288    ("[NOTE]", "note:"),
    289    ("[HELP]", "help:"),
    290    ("[DOCUMENTING]", " Documenting"),
    291    ("[SCRAPING]", "    Scraping"),
    292    ("[FRESH]", "       Fresh"),
    293    ("[DIRTY]", "       Dirty"),
    294    ("[LOCKING]", "     Locking"),
    295    ("[UPDATING]", "    Updating"),
    296    ("[UPGRADING]", "   Upgrading"),
    297    ("[ADDING]", "      Adding"),
    298    ("[REMOVING]", "    Removing"),
    299    ("[REMOVED]", "     Removed"),
    300    ("[UNCHANGED]", "   Unchanged"),
    301    ("[DOCTEST]", "   Doc-tests"),
    302    ("[PACKAGING]", "   Packaging"),
    303    ("[PACKAGED]", "    Packaged"),
    304    ("[DOWNLOADING]", " Downloading"),
    305    ("[DOWNLOADED]", "  Downloaded"),
    306    ("[UPLOADING]", "   Uploading"),
    307    ("[UPLOADED]", "    Uploaded"),
    308    ("[VERIFYING]", "   Verifying"),
    309    ("[ARCHIVING]", "   Archiving"),
    310    ("[INSTALLING]", "  Installing"),
    311    ("[REPLACING]", "   Replacing"),
    312    ("[UNPACKING]", "   Unpacking"),
    313    ("[SUMMARY]", "     Summary"),
    314    ("[FIXED]", "       Fixed"),
    315    ("[FIXING]", "      Fixing"),
    316    ("[IGNORED]", "     Ignored"),
    317    ("[INSTALLED]", "   Installed"),
    318    ("[REPLACED]", "    Replaced"),
    319    ("[BUILDING]", "    Building"),
    320    ("[LOGIN]", "       Login"),
    321    ("[LOGOUT]", "      Logout"),
    322    ("[YANK]", "        Yank"),
    323    ("[OWNER]", "       Owner"),
    324    ("[MIGRATING]", "   Migrating"),
    325    ("[EXECUTABLE]", "  Executable"),
    326    ("[SKIPPING]", "    Skipping"),
    327    ("[WAITING]", "     Waiting"),
    328    ("[PUBLISHED]", "   Published"),
    329    ("[BLOCKING]", "    Blocking"),
    330    ("[GENERATED]", "   Generated"),
    331    ("[OPENING]", "     Opening"),
    332];
    333
    334/// Checks that the given string contains the given contiguous lines
    335/// somewhere.
    336///
    337/// See [Patterns](index.html#patterns) for more information on pattern matching.
    338pub(crate) fn match_contains(
    339    expected: &str,
    340    actual: &str,
    341    redactions: &snapbox::Redactions,
    342) -> Result<()> {
    343    let expected = normalize_expected(expected, redactions);
    344    let actual = normalize_actual(actual, redactions);
    345    let e: Vec<_> = expected.lines().map(|line| WildStr::new(line)).collect();
    346    let a: Vec<_> = actual.lines().collect();
    347    if e.len() == 0 {
    348        bail!("expected length must not be zero");
    349    }
    350    for window in a.windows(e.len()) {
    351        if e == window {
    352            return Ok(());
    353        }
    354    }
    355    bail!(
    356        "expected to find:\n\
    357         {}\n\n\
    358         did not find in output:\n\
    359         {}",
    360        expected,
    361        actual
    362    );
    363}
    364
    365/// Checks that the given string does not contain the given contiguous lines
    366/// anywhere.
    367///
    368/// See [Patterns](index.html#patterns) for more information on pattern matching.
    369pub(crate) fn match_does_not_contain(
    370    expected: &str,
    371    actual: &str,
    372    redactions: &snapbox::Redactions,
    373) -> Result<()> {
    374    if match_contains(expected, actual, redactions).is_ok() {
    375        bail!(
    376            "expected not to find:\n\
    377             {}\n\n\
    378             but found in output:\n\
    379             {}",
    380            expected,
    381            actual
    382        );
    383    } else {
    384        Ok(())
    385    }
    386}
    387
    388/// Checks that the given string has a line that contains the given patterns,
    389/// and that line also does not contain the `without` patterns.
    390///
    391/// See [Patterns](index.html#patterns) for more information on pattern matching.
    392///
    393/// See [`crate::Execs::with_stderr_line_without`] for an example and cautions
    394/// against using.
    395pub(crate) fn match_with_without(
    396    actual: &str,
    397    with: &[String],
    398    without: &[String],
    399    redactions: &snapbox::Redactions,
    400) -> Result<()> {
    401    let actual = normalize_actual(actual, redactions);
    402    let norm = |s: &String| format!("[..]{}[..]", normalize_expected(s, redactions));
    403    let with: Vec<_> = with.iter().map(norm).collect();
    404    let without: Vec<_> = without.iter().map(norm).collect();
    405    let with_wild: Vec<_> = with.iter().map(|w| WildStr::new(w)).collect();
    406    let without_wild: Vec<_> = without.iter().map(|w| WildStr::new(w)).collect();
    407
    408    let matches: Vec<_> = actual
    409        .lines()
    410        .filter(|line| with_wild.iter().all(|with| with == line))
    411        .filter(|line| !without_wild.iter().any(|without| without == line))
    412        .collect();
    413    match matches.len() {
    414        0 => bail!(
    415            "Could not find expected line in output.\n\
    416             With contents: {:?}\n\
    417             Without contents: {:?}\n\
    418             Actual stderr:\n\
    419             {}\n",
    420            with,
    421            without,
    422            actual
    423        ),
    424        1 => Ok(()),
    425        _ => bail!(
    426            "Found multiple matching lines, but only expected one.\n\
    427             With contents: {:?}\n\
    428             Without contents: {:?}\n\
    429             Matching lines:\n\
    430             {}\n",
    431            with,
    432            without,
    433            itertools::join(matches, "\n")
    434        ),
    435    }
    436}
    437
    438/// Normalizes the output so that it can be compared against the expected value.
    439fn normalize_actual(content: &str, redactions: &snapbox::Redactions) -> String {
    440    use snapbox::filter::Filter as _;
    441    let content = snapbox::filter::FilterPaths.filter(content.into_data());
    442    let content = snapbox::filter::FilterNewlines.filter(content);
    443    let content = content.render().expect("came in as a String");
    444    let content = redactions.redact(&content);
    445    content
    446}
    447
    448/// Normalizes the expected string so that it can be compared against the actual output.
    449fn normalize_expected(content: &str, redactions: &snapbox::Redactions) -> String {
    450    use snapbox::filter::Filter as _;
    451    let content = snapbox::filter::FilterPaths.filter(content.into_data());
    452    let content = snapbox::filter::FilterNewlines.filter(content);
    453    // Remove any conditionally absent redactions like `[EXE]`
    454    let content = content.render().expect("came in as a String");
    455    let content = redactions.clear_unused(&content);
    456    content.into_owned()
    457}
    458
    459/// A single line string that supports `[..]` wildcard matching.
    460struct WildStr<'a> {
    461    has_meta: bool,
    462    line: &'a str,
    463}
    464
    465impl<'a> WildStr<'a> {
    466    fn new(line: &'a str) -> WildStr<'a> {
    467        WildStr {
    468            has_meta: line.contains("[..]"),
    469            line,
    470        }
    471    }
    472}
    473
    474impl PartialEq<&str> for WildStr<'_> {
    475    fn eq(&self, other: &&str) -> bool {
    476        if self.has_meta {
    477            meta_cmp(self.line, other)
    478        } else {
    479            self.line == *other
    480        }
    481    }
    482}
    483
    484fn meta_cmp(a: &str, mut b: &str) -> bool {
    485    for (i, part) in a.split("[..]").enumerate() {
    486        match b.find(part) {
    487            Some(j) => {
    488                if i == 0 && j != 0 {
    489                    return false;
    490                }
    491                b = &b[j + part.len()..];
    492            }
    493            None => return false,
    494        }
    495    }
    496    b.is_empty() || a.ends_with("[..]")
    497}
    498
    499impl fmt::Display for WildStr<'_> {
    500    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
    501        f.write_str(&self.line)
    502    }
    503}
    504
    505impl fmt::Debug for WildStr<'_> {
    506    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
    507        write!(f, "{:?}", self.line)
    508    }
    509}
    510
    511pub struct InMemoryDir {
    512    files: Vec<(PathBuf, Data)>,
    513}
    514
    515impl InMemoryDir {
    516    pub fn paths(&self) -> impl Iterator<Item = &Path> {
    517        self.files.iter().map(|(p, _)| p.as_path())
    518    }
    519
    520    #[track_caller]
    521    pub fn assert_contains(&self, expected: &Self) {
    522        use std::fmt::Write as _;
    523        let assert = assert_e2e();
    524        let mut errs = String::new();
    525        for (path, expected_data) in &expected.files {
    526            let actual_data = self
    527                .files
    528                .iter()
    529                .find_map(|(p, d)| (path == p).then(|| d.clone()))
    530                .unwrap_or_else(|| Data::new());
    531            if let Err(err) =
    532                assert.try_eq(Some(&path.display()), actual_data, expected_data.clone())
    533            {
    534                let _ = write!(&mut errs, "{err}");
    535            }
    536        }
    537        if !errs.is_empty() {
    538            panic!("{errs}")
    539        }
    540    }
    541}
    542
    543impl<P, D> FromIterator<(P, D)> for InMemoryDir
    544where
    545    P: Into<std::path::PathBuf>,
    546    D: IntoData,
    547{
    548    fn from_iter<I: IntoIterator<Item = (P, D)>>(files: I) -> Self {
    549        let files = files
    550            .into_iter()
    551            .map(|(p, d)| (p.into(), d.into_data()))
    552            .collect();
    553        Self { files }
    554    }
    555}
    556
    557impl<const N: usize, P, D> From<[(P, D); N]> for InMemoryDir
    558where
    559    P: Into<PathBuf>,
    560    D: IntoData,
    561{
    562    fn from(files: [(P, D); N]) -> Self {
    563        let files = files
    564            .into_iter()
    565            .map(|(p, d)| (p.into(), d.into_data()))
    566            .collect();
    567        Self { files }
    568    }
    569}
    570
    571impl<P, D> From<std::collections::HashMap<P, D>> for InMemoryDir
    572where
    573    P: Into<PathBuf>,
    574    D: IntoData,
    575{
    576    fn from(files: std::collections::HashMap<P, D>) -> Self {
    577        let files = files
    578            .into_iter()
    579            .map(|(p, d)| (p.into(), d.into_data()))
    580            .collect();
    581        Self { files }
    582    }
    583}
    584
    585impl<P, D> From<std::collections::BTreeMap<P, D>> for InMemoryDir
    586where
    587    P: Into<PathBuf>,
    588    D: IntoData,
    589{
    590    fn from(files: std::collections::BTreeMap<P, D>) -> Self {
    591        let files = files
    592            .into_iter()
    593            .map(|(p, d)| (p.into(), d.into_data()))
    594            .collect();
    595        Self { files }
    596    }
    597}
    598
    599impl From<()> for InMemoryDir {
    600    fn from(_files: ()) -> Self {
    601        let files = Vec::new();
    602        Self { files }
    603    }
    604}
    605
    606/// Create an `impl _ for InMemoryDir` for a generic tuple
    607///
    608/// Must pass in names for each tuple parameter for
    609/// - internal variable name
    610/// - `Path` type
    611/// - `Data` type
    612macro_rules! impl_from_tuple_for_inmemorydir {
    613    ($($var:ident $path:ident $data:ident),+) => {
    614        impl<$($path: Into<PathBuf>, $data: IntoData),+> From<($(($path, $data)),+ ,)> for InMemoryDir {
    615            fn from(files: ($(($path, $data)),+,)) -> Self {
    616                let ($($var),+ ,) = files;
    617                let files = [$(($var.0.into(), $var.1.into_data())),+];
    618                files.into()
    619            }
    620        }
    621    };
    622}
    623
    624/// Extend `impl_from_tuple_for_inmemorydir` to generate for the specified tuple and all smaller
    625/// tuples
    626macro_rules! impl_from_tuples_for_inmemorydir {
    627    ($var1:ident $path1:ident $data1:ident, $($var:ident $path:ident $data:ident),+) => {
    628        impl_from_tuples_for_inmemorydir!(__impl $var1 $path1 $data1; $($var $path $data),+);
    629    };
    630    (__impl $($var:ident $path:ident $data:ident),+; $var1:ident $path1:ident $data1:ident $(,$var2:ident $path2:ident $data2:ident)*) => {
    631        impl_from_tuple_for_inmemorydir!($($var $path $data),+);
    632        impl_from_tuples_for_inmemorydir!(__impl $($var $path $data),+, $var1 $path1 $data1; $($var2 $path2 $data2),*);
    633    };
    634    (__impl $($var:ident $path:ident $data:ident),+;) => {
    635        impl_from_tuple_for_inmemorydir!($($var $path $data),+);
    636    }
    637}
    638
    639// Generate for tuples of size `1..=7`
    640impl_from_tuples_for_inmemorydir!(
    641    s1 P1 D1,
    642    s2 P2 D2,
    643    s3 P3 D3,
    644    s4 P4 D4,
    645    s5 P5 D5,
    646    s6 P6 D6,
    647    s7 P7 D7
    648);
    649
    650#[cfg(test)]
    651mod test {
    652    use snapbox::assert_data_eq;
    653    use snapbox::prelude::*;
    654    use snapbox::str;
    655
    656    use super::*;
    657
    658    #[test]
    659    fn wild_str_cmp() {
    660        for (a, b) in &[
    661            ("a b", "a b"),
    662            ("a[..]b", "a b"),
    663            ("a[..]", "a b"),
    664            ("[..]", "a b"),
    665            ("[..]b", "a b"),
    666        ] {
    667            assert_eq!(WildStr::new(a), b);
    668        }
    669        for (a, b) in &[("[..]b", "c"), ("b", "c"), ("b", "cb")] {
    670            assert_ne!(WildStr::new(a), b);
    671        }
    672    }
    673
    674    #[test]
    675    fn redact_elapsed_time() {
    676        let mut subs = snapbox::Redactions::new();
    677        add_regex_redactions(&mut subs);
    678
    679        assert_data_eq!(
    680            subs.redact("[FINISHED] `release` profile [optimized] target(s) in 5.5s"),
    681            str!["[FINISHED] `release` profile [optimized] target(s) in [ELAPSED]s"].raw()
    682        );
    683        assert_data_eq!(
    684            subs.redact("[FINISHED] `release` profile [optimized] target(s) in 1m 05s"),
    685            str!["[FINISHED] `release` profile [optimized] target(s) in [ELAPSED]s"].raw()
    686        );
    687    }
    688}