487 lines
17 KiB
Rust
487 lines
17 KiB
Rust
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//! Incremental single-path index updates, driven by watcher events.
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//!
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//! One [`FsEvent`] becomes one (or a few) small transactions: files row,
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//! `documents_text`, and FTS are updated together, so the index is
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//! consistent after every commit. The same filters as the full walk apply
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//! ([`IgnoreSet`], hidden components, `content_extensions`, size caps) —
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//! a watcher event for something the walker would have skipped is a no-op.
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//!
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//! Renames are handled as remove + re-add: they're rare, and rewriting
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//! `path`/`parent` strings plus re-tokenizing the FTS `name` column in
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//! place is more machinery than re-extracting one file.
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//!
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//! Scope note: the watcher only reports paths under the configured roots,
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//! so no root containment check is repeated here.
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use std::path::Path;
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use rusqlite::{Connection, OptionalExtension};
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use crate::config::{content_allowed, Config, IgnoreSet};
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use crate::db::repo;
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use crate::extract::Registry;
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use crate::file_handling::{
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db_key_for_missing_path, extract_and_store, filtered_walk, UnreadableDirs,
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prepare_file_record_from_path, store_inline_text,
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};
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use crate::platform::path_has_hidden_component_under;
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use crate::query::translator::like_subtree_pattern;
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use crate::watcher::FsEvent;
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/// Apply one filesystem event to the index. Missing files are treated as
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/// no-ops (a Create followed by a quick delete resolves via the Remove
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/// event); unchanged mtimes short-circuit without touching the DB.
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pub fn apply_fs_event(
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conn: &mut Connection,
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event: &FsEvent,
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config: &Config,
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ignore: &IgnoreSet,
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registry: &Registry,
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) -> Result<(), String> {
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match event {
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FsEvent::Create(p) | FsEvent::Modify(p) => upsert_path(conn, p, config, ignore, registry),
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FsEvent::Remove(p) => remove_path(conn, p),
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FsEvent::Rename { from, to } => {
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remove_path(conn, from)?;
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upsert_path(conn, to, config, ignore, registry)
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}
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}
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}
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fn upsert_path(
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conn: &mut Connection,
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path: &Path,
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config: &Config,
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ignore: &IgnoreSet,
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registry: &Registry,
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) -> Result<(), String> {
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if ignore.matches_path(path) {
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return Ok(());
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}
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// Measured from the innermost configured root: the walk never filters the
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// root it was handed, so a root that is itself hidden (`~/.config/app`, or
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// anything under `%LOCALAPPDATA%` on Windows) must not be rejected here —
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// that disagreement is what makes the index churn every cycle.
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if !config.indexing.include_hidden
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&& path_has_hidden_component_under(path, &config.resolved_indexing_paths())
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{
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return Ok(());
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}
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let Ok(meta) = std::fs::metadata(path) else {
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// Already gone again — the pending Remove event handles it.
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return Ok(());
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};
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if meta.is_dir() {
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// A moved-in tree surfaces as one directory event; walk it with
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// the same filters as a full run.
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let Some(root) = path.to_str() else {
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return Ok(());
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};
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let entries: Vec<_> = filtered_walk(
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root,
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config.indexing.follow_symlinks,
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config.indexing.include_hidden,
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ignore,
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&UnreadableDirs::default(),
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)
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.collect();
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for entry in entries {
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upsert_file(conn, entry.path(), config, registry)?;
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}
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Ok(())
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} else {
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upsert_file(conn, path, config, registry)
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}
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}
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fn upsert_file(
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conn: &mut Connection,
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path: &Path,
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config: &Config,
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registry: &Registry,
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) -> Result<(), String> {
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let Some(rec) = prepare_file_record_from_path(path, config, registry) else {
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return Ok(());
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};
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let tx = conn
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.transaction()
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.map_err(|e| format!("begin incremental tx: {}", e))?;
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let existing: Option<(i64, i64)> = tx
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.query_row(
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"SELECT id, mtime FROM files WHERE path = ?1",
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rusqlite::params![rec.path],
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|r| Ok((r.get(0)?, r.get(1)?)),
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)
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.optional()
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.map_err(|e| format!("lookup {}: {}", rec.path, e))?;
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let file_id = match existing {
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Some((_, mtime)) if mtime.max(0) as u64 == rec.mtime => return Ok(()),
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Some((id, _)) => {
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repo::update_file_basic(
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&tx,
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&rec.path,
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rec.size,
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rec.mtime,
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Some(&rec.hash),
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rec.mime.as_deref(),
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rec.ftype,
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)?;
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id
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}
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None => match repo::insert_file(&tx, &rec.as_new_file())? {
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Some(id) => id,
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// Lost a race with another writer on the same path; the row
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// that won is current enough.
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None => return Ok(()),
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},
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};
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if rec.size > config.processing.maximum_text_file_size
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|| !content_allowed(Path::new(&rec.path), config)
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{
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repo::set_content_na(&tx, file_id)?;
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} else if let Some(text) = rec.inline_text.as_deref() {
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// Small enough that `prepare_file_record_from_path` already read the
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// whole file; reopening it here would be the same bytes twice.
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store_inline_text(&tx, file_id, &rec, text, config)?;
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} else {
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extract_and_store(
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&tx,
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file_id,
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&rec.name,
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&rec.path,
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rec.mime.as_deref(),
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registry,
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config,
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)?;
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}
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tx.commit().map_err(|e| format!("commit incremental tx: {}", e))
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}
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fn remove_path(conn: &mut Connection, path: &Path) -> Result<(), String> {
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// The insert side stores a canonicalized path, so the raw event spelling
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// is not a usable key — but the file is already gone, so `canonicalize`
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// cannot be called on it directly either.
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let path_str = db_key_for_missing_path(path);
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let tx = conn
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.transaction()
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.map_err(|e| format!("begin incremental tx: {}", e))?;
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repo::delete_file_by_path(&tx, &path_str)?;
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// Directory removals surface as one event for the directory itself —
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// sweep everything indexed beneath it.
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let subtree: Vec<String> = {
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let mut stmt = tx
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.prepare("SELECT path FROM files WHERE path LIKE ?1 ESCAPE '\\'")
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.map_err(|e| e.to_string())?;
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let rows = stmt
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.query_map(rusqlite::params![like_subtree_pattern(&path_str)], |r| {
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r.get::<_, String>(0)
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})
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.map_err(|e| e.to_string())?;
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rows.collect::<Result<Vec<_>, _>>().map_err(|e| e.to_string())?
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};
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for p in &subtree {
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repo::delete_file_by_path(&tx, p)?;
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}
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tx.commit().map_err(|e| format!("commit incremental tx: {}", e))
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::db::open_or_recreate;
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struct Fixture {
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conn: Connection,
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dir: std::path::PathBuf,
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db: std::path::PathBuf,
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config: Config,
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ignore: IgnoreSet,
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registry: Registry,
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}
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impl Fixture {
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fn new() -> Fixture {
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let stamp = format!(
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"{}-{}",
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std::process::id(),
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std::time::SystemTime::now()
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.duration_since(std::time::UNIX_EPOCH)
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.unwrap()
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.as_nanos()
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);
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let dir = std::env::temp_dir().join(format!("qs-incr-{}", stamp));
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std::fs::create_dir_all(&dir).unwrap();
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let db = std::env::temp_dir().join(format!("qs-incr-{}.sqlite", stamp));
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let conn = open_or_recreate(db.to_str().unwrap(), "trigram").unwrap();
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let config = Config::default();
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let ignore = IgnoreSet::compile(&config.indexing.ignore_patterns).unwrap();
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Fixture {
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conn,
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dir,
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db,
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config,
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ignore,
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registry: Registry::default_set(),
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}
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}
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fn apply(&mut self, event: &FsEvent) {
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apply_fs_event(&mut self.conn, event, &self.config, &self.ignore, &self.registry)
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.unwrap();
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}
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fn write(&self, name: &str, content: &str) -> std::path::PathBuf {
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let p = self.dir.join(name);
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std::fs::create_dir_all(p.parent().unwrap()).unwrap();
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std::fs::write(&p, content).unwrap();
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p
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}
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/// The key the index actually stores. Must go through
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/// `path_to_db_string`, or every lookup here misses the
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/// `\\?\`-stripped spelling on Windows.
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fn canonical(&self, p: &Path) -> String {
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crate::file_handling::path_to_db_string(&p.canonicalize().unwrap())
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}
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fn row(&self, path: &str) -> Option<(i64, i64, i64)> {
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self.conn
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.query_row(
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"SELECT id, mtime, content_state FROM files WHERE path = ?1",
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rusqlite::params![path],
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|r| Ok((r.get(0)?, r.get(1)?, r.get(2)?)),
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)
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.optional()
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.unwrap()
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}
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fn counts(&self) -> (i64, i64, i64) {
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let files = self
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.conn
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.query_row("SELECT COUNT(*) FROM files", [], |r| r.get(0))
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.unwrap();
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let fts = self
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.conn
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.query_row("SELECT COUNT(*) FROM searchabletext", [], |r| r.get(0))
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.unwrap();
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let texts = self
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.conn
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.query_row("SELECT COUNT(*) FROM documents_text", [], |r| r.get(0))
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.unwrap();
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(files, fts, texts)
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}
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fn fts_hits(&self, term: &str) -> i64 {
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self.conn
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.query_row(
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"SELECT COUNT(*) FROM searchabletext WHERE searchabletext MATCH ?1",
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rusqlite::params![format!("\"{}\"", term)],
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|r| r.get(0),
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)
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.unwrap()
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}
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}
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impl Drop for Fixture {
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fn drop(&mut self) {
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std::fs::remove_dir_all(&self.dir).ok();
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std::fs::remove_file(&self.db).ok();
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}
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}
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#[test]
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fn create_indexes_file_and_content() {
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let mut f = Fixture::new();
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let p = f.write("hello.txt", "greetings earthling");
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f.apply(&FsEvent::Create(p.clone()));
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let canonical = f.canonical(&p);
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let (_, _, content_state) = f.row(&canonical).expect("row exists");
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assert_eq!(content_state, repo::STATE_DONE);
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assert_eq!(f.counts(), (1, 1, 1), "files + FTS + text all written");
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assert_eq!(f.fts_hits("earthling"), 1);
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}
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#[test]
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fn modify_with_same_mtime_is_noop_and_changed_mtime_reextracts() {
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let mut f = Fixture::new();
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let p = f.write("doc.txt", "first version");
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f.apply(&FsEvent::Create(p.clone()));
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let canonical = f.canonical(&p);
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let (id1, mtime1, _) = f.row(&canonical).unwrap();
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// Same mtime → no-op (id unchanged, no re-extraction).
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f.apply(&FsEvent::Modify(p.clone()));
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let (id2, mtime2, _) = f.row(&canonical).unwrap();
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assert_eq!((id1, mtime1), (id2, mtime2));
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// Bump mtime and content → re-extracted, FTS follows.
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std::fs::write(&p, "second edition entirely").unwrap();
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let newer = std::time::SystemTime::now() + std::time::Duration::from_secs(5);
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let file = std::fs::File::options().write(true).open(&p).unwrap();
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file.set_modified(newer).unwrap();
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drop(file);
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f.apply(&FsEvent::Modify(p.clone()));
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assert_eq!(f.fts_hits("edition"), 1);
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assert_eq!(f.fts_hits("version"), 0, "stale tokens removed");
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assert_eq!(f.counts(), (1, 1, 1), "still exactly one of everything");
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}
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#[test]
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fn remove_file_cleans_all_tables() {
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let mut f = Fixture::new();
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let p = f.write("bye.txt", "ephemeral text");
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f.apply(&FsEvent::Create(p.clone()));
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let canonical = f.canonical(&p);
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std::fs::remove_file(&p).unwrap();
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f.apply(&FsEvent::Remove(canonical.clone().into()));
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assert!(f.row(&canonical).is_none());
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assert_eq!(f.counts(), (0, 0, 0));
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}
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#[test]
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fn directory_create_and_remove_walks_subtree() {
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let mut f = Fixture::new();
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f.write("tree/a.txt", "alpha content");
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f.write("tree/nested/b.txt", "beta content");
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f.write("tree/.hidden.txt", "should not index");
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f.write("tree/junk.tmp", "ignored pattern");
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let tree = f.dir.join("tree");
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f.apply(&FsEvent::Create(tree.clone()));
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|
|
assert_eq!(f.counts().0, 2, "hidden + ignored excluded");
|
||
|
|
|
||
|
|
let canonical_tree = f.canonical(&tree);
|
||
|
|
std::fs::remove_dir_all(&tree).unwrap();
|
||
|
|
f.apply(&FsEvent::Remove(canonical_tree.into()));
|
||
|
|
assert_eq!(f.counts(), (0, 0, 0), "subtree swept");
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn rename_moves_the_row() {
|
||
|
|
let mut f = Fixture::new();
|
||
|
|
let from = f.write("old-name.txt", "movable feast");
|
||
|
|
f.apply(&FsEvent::Create(from.clone()));
|
||
|
|
let canonical_from = f.canonical(&from);
|
||
|
|
|
||
|
|
let to = f.dir.join("new-name.txt");
|
||
|
|
std::fs::rename(&from, &to).unwrap();
|
||
|
|
f.apply(&FsEvent::Rename {
|
||
|
|
from: canonical_from.clone().into(),
|
||
|
|
to: to.clone(),
|
||
|
|
});
|
||
|
|
|
||
|
|
assert!(f.row(&canonical_from).is_none());
|
||
|
|
let canonical_to = f.canonical(&to);
|
||
|
|
assert!(f.row(&canonical_to).is_some());
|
||
|
|
assert_eq!(f.counts(), (1, 1, 1));
|
||
|
|
assert_eq!(f.fts_hits("feast"), 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn ignored_and_hidden_events_are_noops() {
|
||
|
|
let mut f = Fixture::new();
|
||
|
|
let ignored = f.write("junk.tmp", "x");
|
||
|
|
let hidden = f.write(".secret", "x");
|
||
|
|
f.apply(&FsEvent::Create(ignored));
|
||
|
|
f.apply(&FsEvent::Create(hidden));
|
||
|
|
// Missing file too.
|
||
|
|
f.apply(&FsEvent::Create(f.dir.join("never-existed.txt")));
|
||
|
|
assert_eq!(f.counts(), (0, 0, 0));
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn content_extension_filter_gates_extraction() {
|
||
|
|
let mut f = Fixture::new();
|
||
|
|
f.config.indexing.content_extensions = vec!["md".into()];
|
||
|
|
let txt = f.write("listed-only.txt", "text body here");
|
||
|
|
f.apply(&FsEvent::Create(txt.clone()));
|
||
|
|
|
||
|
|
let canonical = f.canonical(&txt);
|
||
|
|
let (_, _, content_state) = f.row(&canonical).expect("row listed");
|
||
|
|
assert_eq!(
|
||
|
|
content_state,
|
||
|
|
repo::STATE_NA,
|
||
|
|
"filename indexed, content skipped"
|
||
|
|
);
|
||
|
|
assert_eq!(f.counts(), (1, 0, 0));
|
||
|
|
}
|
||
|
|
|
||
|
|
/// A Remove event whose path is spelled differently from the stored key
|
||
|
|
/// must still delete the row. `dir/./f.txt` and `dir/f.txt` are the same
|
||
|
|
/// file; only the canonicalized spelling is in the index.
|
||
|
|
#[test]
|
||
|
|
fn remove_with_a_non_canonical_spelling_still_deletes() {
|
||
|
|
let mut f = Fixture::new();
|
||
|
|
let p = f.write("sub/gone.txt", "vanishing text");
|
||
|
|
f.apply(&FsEvent::Create(p.clone()));
|
||
|
|
assert_eq!(f.counts(), (1, 1, 1));
|
||
|
|
|
||
|
|
std::fs::remove_file(&p).unwrap();
|
||
|
|
// Same file, spelled with a redundant `.` component.
|
||
|
|
let odd = f.dir.join("sub").join(".").join("gone.txt");
|
||
|
|
f.apply(&FsEvent::Remove(odd));
|
||
|
|
assert_eq!(f.counts(), (0, 0, 0), "row removed despite the spelling");
|
||
|
|
}
|
||
|
|
|
||
|
|
/// The subtree sweep must not take siblings whose names merely share a
|
||
|
|
/// string prefix — `tree2` is not inside `tree`.
|
||
|
|
#[test]
|
||
|
|
fn subtree_sweep_spares_prefix_siblings() {
|
||
|
|
let mut f = Fixture::new();
|
||
|
|
f.write("tree/a.txt", "alpha content");
|
||
|
|
f.write("tree2/b.txt", "beta content");
|
||
|
|
let tree = f.dir.join("tree");
|
||
|
|
f.apply(&FsEvent::Create(tree.clone()));
|
||
|
|
f.apply(&FsEvent::Create(f.dir.join("tree2")));
|
||
|
|
assert_eq!(f.counts().0, 2);
|
||
|
|
|
||
|
|
let canonical_tree = f.canonical(&tree);
|
||
|
|
std::fs::remove_dir_all(&tree).unwrap();
|
||
|
|
f.apply(&FsEvent::Remove(canonical_tree.into()));
|
||
|
|
|
||
|
|
assert_eq!(f.counts().0, 1, "only tree/ was swept");
|
||
|
|
let survivor = f.canonical(&f.dir.join("tree2").join("b.txt"));
|
||
|
|
assert!(f.row(&survivor).is_some(), "tree2 untouched");
|
||
|
|
}
|
||
|
|
|
||
|
|
/// A directory whose name contains a LIKE metacharacter must be swept
|
||
|
|
/// literally, not as a wildcard.
|
||
|
|
#[test]
|
||
|
|
fn subtree_sweep_treats_like_metacharacters_literally() {
|
||
|
|
let mut f = Fixture::new();
|
||
|
|
f.write("a_b/inside.txt", "underscore dir");
|
||
|
|
f.write("axb/other.txt", "wildcard bait");
|
||
|
|
f.apply(&FsEvent::Create(f.dir.join("a_b")));
|
||
|
|
f.apply(&FsEvent::Create(f.dir.join("axb")));
|
||
|
|
assert_eq!(f.counts().0, 2);
|
||
|
|
|
||
|
|
let target = f.dir.join("a_b");
|
||
|
|
let canonical = f.canonical(&target);
|
||
|
|
std::fs::remove_dir_all(&target).unwrap();
|
||
|
|
f.apply(&FsEvent::Remove(canonical.into()));
|
||
|
|
|
||
|
|
assert_eq!(f.counts().0, 1, "`_` must not match `x`");
|
||
|
|
let survivor = f.canonical(&f.dir.join("axb").join("other.txt"));
|
||
|
|
assert!(f.row(&survivor).is_some());
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn oversize_files_get_content_na() {
|
||
|
|
let mut f = Fixture::new();
|
||
|
|
f.config.processing.maximum_text_file_size = 4;
|
||
|
|
let p = f.write("big.txt", "way more than four bytes");
|
||
|
|
f.apply(&FsEvent::Create(p.clone()));
|
||
|
|
let canonical = f.canonical(&p);
|
||
|
|
let (_, _, content_state) = f.row(&canonical).unwrap();
|
||
|
|
assert_eq!(content_state, repo::STATE_NA);
|
||
|
|
}
|
||
|
|
}
|