fix[rust]: remove benchmarking code

polars/polars-io/Cargo.toml

@@ -45,7 +45,7 @@ arrow = { package = "arrow2", git = "https://github.com/jorgecarleitao/arrow2",
 csv-core = { version = "0.1.10", optional = true }
 dirs = "4.0"
 flate2 = { version = "1", optional = true, default-features = false }
-lexical = { version = "6", optional = true, default-features = false, features = ["std", "parse-floats", "parse-integers", "write-floats"] }
+lexical = { version = "6", optional = true, default-features = false, features = ["std", "parse-floats", "parse-integers"] }
 lexical-core = { version = "0.8", optional = true }
 memchr = "2.4"
 memmap = { package = "memmap2", version = "0.5.2", optional = true }
@@ -55,7 +55,6 @@ polars-arrow = { version = "0.23.0", path = "../polars-arrow" }
 polars-core = { version = "0.23.0", path = "../polars-core", features = ["private"], default-features = false }
 polars-time = { version = "0.23.0", path = "../polars-time", features = ["private"], default-features = false, optional = true }
 polars-utils = { version = "0.23.0", path = "../polars-utils" }
-rand = "0.8.5"
 rayon = "1.5"
 regex = "1.5"
 serde = { version = "1", features = ["derive"], optional = true }

polars/polars-io/src/csv/mod.rs

@@ -74,34 +74,3 @@ use crate::mmap::MmapBytesReader;
 use crate::predicates::PhysicalIoExpr;
 use crate::utils::resolve_homedir;
 use crate::{RowCount, SerReader, SerWriter};
-
-#[cfg(test)]
-mod tests {
-    extern crate test;
-
-    use polars_core::prelude::*;
-    use rand::prelude::*;
-    use test::Bencher;
-
-    use crate::csv::CsvWriter;
-    use crate::SerWriter;
-
-    #[bench]
-    fn benchmark_write_csv_f32(b: &mut Bencher) -> Result<()> {
-        // NOTE: This benchmark can be run by executing ``$ cargo bench -p polars-io``
-        // from within /polars/polars/
-        const N: usize = 10_000_000;
-
-        let vec: Vec<f32> = (0..N).map(|_| thread_rng().next_u32() as f32).collect();
-
-        let mut df = df![
-            "random" => vec.as_slice(),
-        ]?;
-
-        let mut buffer: Vec<u8> = Vec::new();
-
-        b.iter(|| CsvWriter::new(&mut buffer).finish(&mut df));
-
-        Ok(())
-    }
-}

polars/polars-io/src/lib.rs

@@ -1,4 +1,3 @@
-#![feature(test)]
 #![cfg_attr(docsrs, feature(doc_cfg))]
 
 #[cfg(feature = "private")]