You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: push_line_splitter.rs
    path of file: ./repos/ferrous-actions/src/actions
    
    the code of the file until where you have to start completion: use std::borrow::Cow;
use std::collections::VecDeque;

/// A platform-agnostic line splitter.
///
/// This is part of a work-around for
/// <https://github.com/FrancisRussell/ferrous-actions-dev/issues/81>. It treats any group of CR and
/// LF characters with no repeated characters as a line break.
///
/// `close()` must be called when the input source has hit EOF so final lines
/// may be returned.

#[derive(
    
    fn test_inputs() -> Vec<Vec<String>> {
        let test_vectors: [&[&str]; 6] = [
            &[""],
            &["the quick", "brown fox"],
            &["", "the quick", "brown fox", "jumped over", ""],
            &["", "", "", "", ""],
            &["a", "", "", "b", "", "", "c"],
            &["", "a", "", "b", "", "c", ""],
        ];
        let mut result = Vec::with_capacity(test_vectors.len());
        for lines in test_vectors {
            result.push(lines.into_iter().copied().map(String::from).collect());
        }
        result
    }