3 files changed, 154 insertions, 0 deletions
diff --git a/third_party/rust/rusqlite/tests/config_log.rs b/third_party/rust/rusqlite/tests/config_log.rs
new file mode 100644
index 0000000000..0c28bdf1df
--- /dev/null
+++ b/third_party/rust/rusqlite/tests/config_log.rs
@@ -0,0 +1,34 @@
+//! This file contains unit tests for `rusqlite::trace::config_log`. This
+//! function affects SQLite process-wide and so is not safe to run as a normal
+//! #[test] in the library.
+
+#[cfg(feature = "trace")]
+fn main() {
+    use lazy_static::lazy_static;
+    use std::os::raw::c_int;
+    use std::sync::Mutex;
+
+    lazy_static! {
+        static ref LOGS_RECEIVED: Mutex<Vec<(c_int, String)>> = Mutex::new(Vec::new());
+    }
+
+    fn log_handler(err: c_int, message: &str) {
+        let mut logs_received = LOGS_RECEIVED.lock().unwrap();
+        logs_received.push((err, message.to_owned()));
+    }
+
+    use rusqlite::trace;
+
+    unsafe { trace::config_log(Some(log_handler)) }.unwrap();
+    trace::log(10, "First message from rusqlite");
+    unsafe { trace::config_log(None) }.unwrap();
+    trace::log(11, "Second message from rusqlite");
+
+    let logs_received = LOGS_RECEIVED.lock().unwrap();
+    assert_eq!(logs_received.len(), 1);
+    assert_eq!(logs_received[0].0, 10);
+    assert_eq!(logs_received[0].1, "First message from rusqlite");
+}
+
+#[cfg(not(feature = "trace"))]
+fn main() {}
diff --git a/third_party/rust/rusqlite/tests/deny_single_threaded_sqlite_config.rs b/third_party/rust/rusqlite/tests/deny_single_threaded_sqlite_config.rs
new file mode 100644
index 0000000000..aeb7eec317
--- /dev/null
+++ b/third_party/rust/rusqlite/tests/deny_single_threaded_sqlite_config.rs
@@ -0,0 +1,20 @@
+//! Ensure we reject connections when SQLite is in single-threaded mode, as it
+//! would violate safety if multiple Rust threads tried to use connections.
+
+#[cfg(not(feature = "loadable_extension"))]
+#[test]
+fn test_error_when_singlethread_mode() {
+    use rusqlite::ffi;
+    use rusqlite::Connection;
+    // put SQLite into single-threaded mode
+    unsafe {
+        // Note: macOS system SQLite seems to return an error if you attempt to
+        // reconfigure to single-threaded mode.
+        if ffi::sqlite3_config(ffi::SQLITE_CONFIG_SINGLETHREAD) != ffi::SQLITE_OK {
+            return;
+        }
+        assert_eq!(ffi::sqlite3_initialize(), ffi::SQLITE_OK);
+    }
+    let res = Connection::open_in_memory();
+    res.unwrap_err();
+}
diff --git a/third_party/rust/rusqlite/tests/vtab.rs b/third_party/rust/rusqlite/tests/vtab.rs
new file mode 100644
index 0000000000..65582064c9
--- /dev/null
+++ b/third_party/rust/rusqlite/tests/vtab.rs
@@ -0,0 +1,100 @@
+//! Ensure Virtual tables can be declared outside `rusqlite` crate.
+
+#[cfg(feature = "vtab")]
+#[test]
+fn test_dummy_module() -> rusqlite::Result<()> {
+    use rusqlite::vtab::{
+        eponymous_only_module, sqlite3_vtab, sqlite3_vtab_cursor, Context, IndexInfo, VTab,
+        VTabConnection, VTabCursor, Values,
+    };
+    use rusqlite::{version_number, Connection, Result};
+    use std::marker::PhantomData;
+    use std::os::raw::c_int;
+
+    let module = eponymous_only_module::<DummyTab>();
+
+    #[repr(C)]
+    struct DummyTab {
+        /// Base class. Must be first
+        base: sqlite3_vtab,
+    }
+
+    unsafe impl<'vtab> VTab<'vtab> for DummyTab {
+        type Aux = ();
+        type Cursor = DummyTabCursor<'vtab>;
+
+        fn connect(
+            _: &mut VTabConnection,
+            _aux: Option<&()>,
+            _args: &[&[u8]],
+        ) -> Result<(String, DummyTab)> {
+            let vtab = DummyTab {
+                base: sqlite3_vtab::default(),
+            };
+            Ok(("CREATE TABLE x(value)".to_owned(), vtab))
+        }
+
+        fn best_index(&self, info: &mut IndexInfo) -> Result<()> {
+            info.set_estimated_cost(1.);
+            Ok(())
+        }
+
+        fn open(&'vtab mut self) -> Result<DummyTabCursor<'vtab>> {
+            Ok(DummyTabCursor::default())
+        }
+    }
+
+    #[derive(Default)]
+    #[repr(C)]
+    struct DummyTabCursor<'vtab> {
+        /// Base class. Must be first
+        base: sqlite3_vtab_cursor,
+        /// The rowid
+        row_id: i64,
+        phantom: PhantomData<&'vtab DummyTab>,
+    }
+
+    unsafe impl VTabCursor for DummyTabCursor<'_> {
+        fn filter(
+            &mut self,
+            _idx_num: c_int,
+            _idx_str: Option<&str>,
+            _args: &Values<'_>,
+        ) -> Result<()> {
+            self.row_id = 1;
+            Ok(())
+        }
+
+        fn next(&mut self) -> Result<()> {
+            self.row_id += 1;
+            Ok(())
+        }
+
+        fn eof(&self) -> bool {
+            self.row_id > 1
+        }
+
+        fn column(&self, ctx: &mut Context, _: c_int) -> Result<()> {
+            ctx.set_result(&self.row_id)
+        }
+
+        fn rowid(&self) -> Result<i64> {
+            Ok(self.row_id)
+        }
+    }
+
+    let db = Connection::open_in_memory()?;
+
+    db.create_module::<DummyTab>("dummy", module, None)?;
+
+    let version = version_number();
+    if version < 3_009_000 {
+        return Ok(());
+    }
+
+    let mut s = db.prepare("SELECT * FROM dummy()")?;
+
+    let dummy = s.query_row([], |row| row.get::<_, i32>(0))?;
+    assert_eq!(1, dummy);
+    Ok(())
+}