Add tests for Ident::new and Ident::parse
diff --git a/tests/test_ident.rs b/tests/test_ident.rs
new file mode 100644
index 0000000..c8652fe
--- /dev/null
+++ b/tests/test_ident.rs
@@ -0,0 +1,98 @@
+// Copyright 2018 Syn Developers
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+extern crate proc_macro2;
+extern crate syn;
+
+use std::str::FromStr;
+use proc_macro2::{TokenStream, Span};
+use syn::Ident;
+use syn::synom::ParseError;
+
+fn parse(s: &str) -> Result<Ident, ParseError> {
+ syn::parse2(TokenStream::from_str(s).unwrap())
+}
+
+fn new(s: &str) -> Ident {
+ Ident::new(s, Span::call_site())
+}
+
+#[test]
+fn ident_parse() {
+ parse("String").unwrap();
+}
+
+#[test]
+fn ident_parse_keyword() {
+ parse("abstract").unwrap_err();
+}
+
+#[test]
+fn ident_parse_empty() {
+ parse("").unwrap_err();
+}
+
+#[test]
+fn ident_parse_lifetime() {
+ parse("'static").unwrap_err();
+}
+
+#[test]
+fn ident_parse_underscore() {
+ parse("_").unwrap_err();
+}
+
+#[test]
+fn ident_parse_number() {
+ parse("255").unwrap_err();
+}
+
+#[test]
+fn ident_parse_invalid() {
+ parse("a#").unwrap_err();
+}
+
+#[test]
+fn ident_new() {
+ new("String");
+}
+
+#[test]
+fn ident_new_keyword() {
+ new("abstract");
+}
+
+#[test]
+#[should_panic(expected = "ident is not allowed to be empty; use Option<Ident>")]
+fn ident_new_empty() {
+ new("");
+}
+
+#[test]
+#[should_panic(expected = "ident is not allowed to be a lifetime; use syn::Lifetime")]
+fn ident_new_lifetime() {
+ new("'static");
+}
+
+#[test]
+#[should_panic(expected = "`_` is not a valid ident; use syn::token::Underscore")]
+fn ident_new_underscore() {
+ new("_");
+}
+
+#[test]
+#[should_panic(expected = "ident cannot be a number, use syn::Index instead")]
+fn ident_new_number() {
+ new("255");
+}
+
+#[test]
+#[should_panic(expected = "\"a#\" is not a valid ident")]
+fn ident_new_invalid() {
+ new("a#");
+}