Apply suggestions from code review

Co-authored-by: Abin Simon <[email protected]>

src/app.rs

@@ -290,11 +290,10 @@ fn validate_date_argument(arg: String) -> Result<(), String> {
 }
 
 pub fn validate_time_format(formatter: &str) -> Result<(), String> {
-    let str = formatter.to_string();
-    let vec: Vec<&str> = str.split('\n').collect();
+    let vec: Vec<&str> = formatter.split('\n').collect();
 
     if vec.len() > 2 {
-        return Err("invalid format, can only contain one newline separator".to_owned());
+        return Err("invalid date format, cannot contain more than two entries".to_owned());
     }
 
     for s in vec {

src/meta/date.rs

@@ -68,7 +68,7 @@ impl Date {
                 DateFlag::Formatted(format) => {
                     let vec: Vec<&str> = format.split('\n').collect();
 
-                    if vec.len() == 1 || *val > Local::now() - Duration::seconds(15_778_476) {
+                    if vec.len() == 1 || *val < Local::now() - Duration::seconds(15_778_476) {
                         // non-recent or only one format
                         val.format(vec[0]).to_string()
                     } else {
@@ -93,7 +93,6 @@ mod test {
     use std::io;
     use std::path::Path;
     use std::process::{Command, ExitStatus};
-    use std::time;
     use std::{env, fs};
 
     #[cfg(unix)]
@@ -337,7 +336,7 @@ mod test {
 
         assert_eq!(
             creation_date
-                .format("%F")
+                .format("%H:%M")
                 .to_string()
                 .with(Color::AnsiValue(40)),
             date.render(&colors, &flags)
@@ -365,7 +364,7 @@ mod test {
 
         assert_eq!(
             creation_date
-                .format("%H:%M")
+                .format("%F")
                 .to_string()
                 .with(Color::AnsiValue(36)),
             date.render(&colors, &flags)