tests: adds tests for .last(true) args

tests/help.rs

@@ -290,6 +290,72 @@ FLAGS:
     -H, --help       Print help information
     -v, --version    Print version information";
 
+static LAST_ARG: &'static str = "last 0.1
+
+USAGE:
+    last <TARGET> [CORPUS] [-- <ARGS>...]
+
+FLAGS:
+    -h, --help       Prints help information
+    -V, --version    Prints version information
+
+ARGS:
+    <TARGET>     some
+    <CORPUS>     some
+    <ARGS>...    some";
+
+static LAST_ARG_SC: &'static str = "last 0.1
+
+USAGE:
+    last <TARGET> [CORPUS] [-- <ARGS>...]
+    last <SUBCOMMAND>
+
+FLAGS:
+    -h, --help       Prints help information
+    -V, --version    Prints version information
+
+ARGS:
+    <TARGET>     some
+    <CORPUS>     some
+    <ARGS>...    some
+
+SUBCOMMANDS:
+    help    Prints this message or the help of the given subcommand(s)
+    test    some";
+
+static LAST_ARG_REQ: &'static str = "last 0.1
+
+USAGE:
+    last <TARGET> [CORPUS] -- <ARGS>...
+
+FLAGS:
+    -h, --help       Prints help information
+    -V, --version    Prints version information
+
+ARGS:
+    <TARGET>     some
+    <CORPUS>     some
+    <ARGS>...    some";
+
+static LAST_ARG_REQ_SC: &'static str = "last 0.1
+
+USAGE:
+    last <TARGET> [CORPUS] -- <ARGS>...
+    last <SUBCOMMAND>
+
+FLAGS:
+    -h, --help       Prints help information
+    -V, --version    Prints version information
+
+ARGS:
+    <TARGET>     some
+    <CORPUS>     some
+    <ARGS>...    some
+
+SUBCOMMANDS:
+    help    Prints this message or the help of the given subcommand(s)
+    test    some";
+
 #[test]
 fn help_short() {
     let m = App::new("test")
@@ -641,3 +707,47 @@ fn customize_version_and_help() {
         .version_message("Print version information");
     assert!(test::compare_output(app, "customize --help", CUSTOM_VERSION_AND_HELP, false));
 }
+
+#[test]
+fn last_arg_mult_usage() {
+    let app = App::new("last")
+            .version("0.1")
+            .arg(Arg::with_name("TARGET").required(true).help("some"))
+            .arg(Arg::with_name("CORPUS").help("some"))
+            .arg(Arg::with_name("ARGS").multiple(true).last(true).help("some"));
+    assert!(test::compare_output(app, "last --help", LAST_ARG, false));
+}
+
+#[test]
+fn last_arg_mult_usage_req() {
+    let app = App::new("last")
+            .version("0.1")
+            .arg(Arg::with_name("TARGET").required(true).help("some"))
+            .arg(Arg::with_name("CORPUS").help("some"))
+            .arg(Arg::with_name("ARGS").multiple(true).last(true).required(true).help("some"));
+    assert!(test::compare_output(app, "last --help", LAST_ARG_REQ, false));
+}
+
+#[test]
+fn last_arg_mult_usage_req_with_sc() {
+    let app = App::new("last")
+            .version("0.1")
+            .setting(AppSettings::SubcommandsNegateReqs)
+            .arg(Arg::with_name("TARGET").required(true).help("some"))
+            .arg(Arg::with_name("CORPUS").help("some"))
+            .arg(Arg::with_name("ARGS").multiple(true).last(true).required(true).help("some"))
+            .subcommand(SubCommand::with_name("test").about("some"));
+    assert!(test::compare_output(app, "last --help", LAST_ARG_REQ_SC, false));
+}
+
+#[test]
+fn last_arg_mult_usage_with_sc() {
+    let app = App::new("last")
+            .version("0.1")
+            .setting(AppSettings::ArgsNegateSubcommands)
+            .arg(Arg::with_name("TARGET").required(true).help("some"))
+            .arg(Arg::with_name("CORPUS").help("some"))
+            .arg(Arg::with_name("ARGS").multiple(true).last(true).help("some"))
+            .subcommand(SubCommand::with_name("test").about("some"));
+    assert!(test::compare_output(app, "last --help", LAST_ARG_SC, false));
+}

tests/positionals.rs

@@ -211,3 +211,26 @@ fn missing_required_2() {
     assert!(r.is_err());
     assert_eq!(r.unwrap_err().kind, ErrorKind::MissingRequiredArgument);
 }
+
+#[test]
+fn last_positional() {
+    let r = App::new("test")
+        .arg_from_usage("<TARGET> 'some target'")
+        .arg_from_usage("[CORPUS] 'some corpus'")
+        .arg(Arg::from_usage("[ARGS]... 'some file'").last(true))
+        .get_matches_from_safe(vec!["test", "tgt", "--", "arg"]);
+    assert!(r.is_ok());
+    let m = r.unwrap();
+    assert_eq!(m.values_of("ARGS").unwrap().collect::<Vec<_>>(), &["arg"]);
+}
+
+#[test]
+fn last_positional_no_double_dash() {
+    let r = App::new("test")
+        .arg_from_usage("<TARGET> 'some target'")
+        .arg_from_usage("[CORPUS] 'some corpus'")
+        .arg(Arg::from_usage("[ARGS]... 'some file'").last(true))
+        .get_matches_from_safe(vec!["test", "tgt", "crp", "arg"]);
+    assert!(r.is_err());
+    assert_eq!(r.unwrap_err().kind, ErrorKind::UnknownArgument);
+}