feat(fs): add lines to reader

src/fs/real/reader.rs

@@ -1,5 +1,5 @@
 //
-use std::{fmt::Display, path::Path};
+use std::{fmt::Display, path::Path, str::Lines};
 
 use crate::fs::Result;
 
@@ -15,6 +15,10 @@ impl ReaderReal {
     pub fn as_str(&self) -> &str {
         &self.contents
     }
+
+    pub fn lines(&self) -> Lines<'_> {
+        self.contents.lines()
+    }
 }
 impl Display for ReaderReal {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {

tests/fs.rs

@@ -114,6 +114,22 @@ mod file {
 
         Ok(())
     }
+
+    #[test]
+    fn read_file_lines() -> TestResult {
+        let fs = fs::temp().expect("temp fs");
+
+        let path = fs.base().join("foo");
+        let mut file = fs.file(&path);
+        file.write("line 1\nline 2").expect("write");
+
+        let reader = file.reader().expect("reader");
+        let lines = reader.lines().collect::<Vec<_>>();
+
+        assert_eq!(lines, vec!["line 1", "line 2"]);
+
+        Ok(())
+    }
 }
 
 mod dir_create {