tests: removes extra newline from version output tests

clap-test.rs

@@ -60,6 +60,16 @@ mod test {
         assert_eq!(str::from_utf8(&help).unwrap(), out);
     }
 
+    pub fn check_version(mut a: App, out: &str) {
+        // We call a get_matches method to cause --help and --version to be built
+        let _ = a.get_matches_from_safe_borrow(vec![""]);
+
+        // Now we check the output of print_version()
+        let mut ver = vec![];
+        a.write_version(&mut ver).ok().expect("failed to print help");
+        assert_eq!(str::from_utf8(&ver).unwrap(), out);
+    }
+
     pub fn check_complex_output(args: &str, out: &str) {
         let mut w = vec![];
         let matches = complex_app().get_matches_from(args.split(' ').collect::<Vec<_>>());

src/app/mod.rs

@@ -805,7 +805,7 @@ impl<'a, 'b> App<'a, 'b> {
     /// use std::io;
     /// let mut app = App::new("myprog");
     /// let mut out = io::stdout();
-    /// app.write_vesrion(&mut out).ok().expect("failed to write to stdout");
+    /// app.write_version(&mut out).ok().expect("failed to write to stdout");
     /// ```
     /// [`io::Write`]: https://doc.rust-lang.org/std/io/trait.Write.html
     pub fn write_version<W: Write>(&self, w: &mut W) -> ClapResult<()> {

tests/version.rs

@@ -1,7 +1,12 @@
 extern crate clap;
+extern crate regex;
 
 use clap::{App, ErrorKind};
 
+include!("../clap-test.rs");
+
+static VERSION: &'static str = "clap-test v1.4.8";
+
 #[test]
 fn version_short() {
     let m = App::new("test")
@@ -25,3 +30,8 @@ fn version_long() {
     assert!(m.is_err());
     assert_eq!(m.unwrap_err().kind, ErrorKind::VersionDisplayed);
 }
+
+#[test]
+fn complex_version_output() {
+    test::check_version(test::complex_app(), VERSION);
+}