tests: adds tests for AppSettings::AllowMissingPositional

tests/app_settings.rs

@@ -456,4 +456,15 @@ fn propagate_vals_down() {
     assert_eq!(m.value_of("cmd"), Some("set"));
     let sub_m = m.subcommand_matches("foo").unwrap();
     assert_eq!(sub_m.value_of("cmd"), Some("set"));
+}
+
+#[test]
+fn allow_missing_positional() {
+    let m = App::new("test")
+        .setting(AppSettings::AllowMissingPositional)
+        .arg(Arg::from_usage("[src] 'some file'").default_value("src"))
+        .arg_from_usage("<dest> 'some file'")
+        .get_matches_from(vec!["test", "file"]);
+    assert_eq!(m.value_of("src"), Some("src"));
+    assert_eq!(m.value_of("dest"), Some("file"));
 }

tests/positionals.rs

@@ -190,3 +190,24 @@ fn single_positional_required_usage_string() {
         .get_matches_from(vec!["test", "file"]);
     assert_eq!(m.usage(), "USAGE:\n    test <FILE>");
 }
+
+#[test]
+#[should_panic]
+fn missing_required() {
+    let r = App::new("test")
+        .arg_from_usage("[FILE1] 'some file'")
+        .arg_from_usage("<FILE2> 'some file'")
+        .get_matches_from_safe(vec!["test", "file"]);
+    assert!(r.is_err());
+    assert_eq!(r.unwrap_err().kind, ErrorKind::MissingRequiredArgument);
+}
+
+#[test]
+fn missing_required_2() {
+    let r = App::new("test")
+        .arg_from_usage("<FILE1> 'some file'")
+        .arg_from_usage("<FILE2> 'some file'")
+        .get_matches_from_safe(vec!["test", "file"]);
+    assert!(r.is_err());
+    assert_eq!(r.unwrap_err().kind, ErrorKind::MissingRequiredArgument);
+}