Function csv_expected_batch

datafusion/core/src/datasource/file_format/csv.rs:1300–1324

(schema: SchemaRef, line_count: usize)

    }

    fn csv_expected_batch(schema: SchemaRef, line_count: usize) -> Result<RecordBatch> {
        let mut c1 = Vec::with_capacity(line_count);
        let mut c2 = Vec::with_capacity(line_count);
        let mut c3 = Vec::with_capacity(line_count);
        let mut c4 = Vec::with_capacity(line_count);

        for i in 0..line_count {
            let (int_value, float_value, bool_value, char_value) = csv_values(i);
            c1.push(int_value);
            c2.push(float_value);
            c3.push(bool_value);
            c4.push(char_value);
        }

        let expected = RecordBatch::try_new(
            schema.clone(),
            vec![
                Arc::new(Int32Array::from(c1)),
                Arc::new(Float64Array::from(c2)),
                Arc::new(BooleanArray::from(c3)),
                Arc::new(StringArray::from(c4)),
            ],
        )?;
        Ok(expected)
    }

    fn csv_line(line_number: usize) -> Bytes {
        let (int_value, float_value, bool_value, char_value) = csv_values(line_number);