From e2c6d5e4aa9c093fb216e8d103f4e7182361d650 Mon Sep 17 00:00:00 2001
From: Toby Vincent <tobyv13@gmail.com>
Date: Sat, 3 Dec 2022 21:50:28 -0600
Subject: test: finish impl test_process_input

---
 src/lib.rs | 46 ++++++++++++++++++++++------------------------
 1 file changed, 22 insertions(+), 24 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index 0ef1b4c..ab3002d 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -107,26 +107,14 @@ fn parse_nonprinting_char(mut c: u8) -> Vec<u8> {
 mod test {
     use super::*;
 
-    use std::{
-        io::{BufWriter, Write},
-        process::{Command, Stdio},
-    };
+    use std::process::{Command, Stdio};
 
     #[test]
-    fn test_nonprinting_char() {
-        let perl_exp = r#"\
-        for( my $i=0 ; $i < 256; $i++ ) {
-            print ( sprintf( "%c is %d %x", $i, $i ,$i ) );
-        }"#;
-
-        let perl_stdout = Command::new("perl")
-            .arg("-e")
-            .arg(perl_exp)
-            .output()
-            .unwrap()
-            .stdout;
-
-        println!("{:?}", perl_stdout);
+    fn test_process_input() {
+        let input = (0..255_u8)
+            .map(|i| format!("{}", i as char))
+            .collect::<Vec<String>>()
+            .join("\n");
 
         let cat_child = Command::new("cat")
             .arg("-")
@@ -136,20 +124,30 @@ mod test {
             .spawn()
             .unwrap();
 
-        BufWriter::new(cat_child.stdin.as_ref().unwrap())
-            .write_all(&perl_stdout)
+        cat_child
+            .stdin
+            .as_ref()
+            .unwrap()
+            .write_all(input.as_bytes())
             .unwrap();
 
-        let cat_output = cat_child.wait_with_output().unwrap().stdout;
+        let cat_output = cat_child.wait_with_output().unwrap();
+        let cat_result = String::from_utf8(cat_output.stdout).unwrap();
 
-        let mut catr_output = Vec::new();
         let opts = Opts {
             show_nonprinting: true,
             ..Default::default()
         };
 
-        process_input(&*perl_stdout, &mut catr_output, &opts).unwrap();
+        let mut writer = Vec::new();
+
+        process_input(input.as_bytes(), &mut writer, &opts).unwrap();
+
+        let result = String::from_utf8(writer).unwrap();
 
-        assert_eq!(cat_output, catr_output)
+        cat_result
+            .lines()
+            .zip(result.lines())
+            .for_each(|(c_cat, c)| assert_eq!(c_cat, c));
     }
 }
-- 
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