Carray module ported to Rust

This commit is contained in:
gwenn 2018-06-11 21:30:55 +02:00
parent 9a96e3a494
commit 1a1d41b4e4

View File

@ -165,7 +165,7 @@ impl VTabCursor for ArrayTabCursor {
CARRAY_COLUMN_POINTER => Ok(()),
_ => {
if let Some(ref array) = self.ptr {
let value = &array[i as usize];
let value = &array[(self.row_id - 1) as usize];
ctx.set_result(&value)
} else {
Ok(())
@ -177,3 +177,31 @@ impl VTabCursor for ArrayTabCursor {
Ok(self.row_id)
}
}
#[cfg(test)]
mod test {
use std::rc::Rc;
use types::Value;
use vtab::array;
use Connection;
#[test]
#[cfg_attr(rustfmt, rustfmt_skip)]
fn test_array_module() {
let db = Connection::open_in_memory().unwrap();
array::load_module(&db).unwrap();
let v = vec![1i64, 2, 3, 4];
let values = v.into_iter().map(|i| Value::from(i)).collect();
let ptr = Rc::new(values);
let mut stmt = db.prepare("SELECT value from rarray(?);").unwrap();
let rows = stmt.query_map(&[&ptr], |row| row.get::<_, i64>(0)).unwrap();
let mut count = 0;
for (i, value) in rows.enumerate() {
assert_eq!(i as i64, value.unwrap()-1);
count += 1;
}
assert_eq!(4, count);
}
}