1 files changed, 92 insertions, 4 deletions

diff --git a/vendor/proc-macro2/tests/test.rs b/vendor/proc-macro2/tests/test.rs
index e0af1512c..7792a0208 100644
--- a/vendor/proc-macro2/tests/test.rs
+++ b/vendor/proc-macro2/tests/test.rs
@@ -1,7 +1,8 @@
 #![allow(
     clippy::assertions_on_result_states,
     clippy::items_after_statements,
-    clippy::non_ascii_literal
+    clippy::non_ascii_literal,
+    clippy::octal_escapes
 )]
 
 use proc_macro2::{Ident, Literal, Punct, Spacing, Span, TokenStream, TokenTree};
@@ -114,6 +115,13 @@ fn literal_string() {
     assert_eq!(Literal::string("foo").to_string(), "\"foo\"");
     assert_eq!(Literal::string("\"").to_string(), "\"\\\"\"");
     assert_eq!(Literal::string("didn't").to_string(), "\"didn't\"");
+    assert_eq!(
+        Literal::string("a\00b\07c\08d\0e\0").to_string(),
+        "\"a\\x000b\\x007c\\08d\\0e\\0\"",
+    );
+
+    "\"\\\r\n    x\"".parse::<TokenStream>().unwrap();
+    "\"\\\r\n  \rx\"".parse::<TokenStream>().unwrap_err();
 }
 
 #[test]
@@ -147,6 +155,51 @@ fn literal_byte_string() {
         Literal::byte_string(b"\0\t\n\r\"\\2\x10").to_string(),
         "b\"\\0\\t\\n\\r\\\"\\\\2\\x10\"",
     );
+    assert_eq!(
+        Literal::byte_string(b"a\00b\07c\08d\0e\0").to_string(),
+        "b\"a\\x000b\\x007c\\08d\\0e\\0\"",
+    );
+
+    "b\"\\\r\n    x\"".parse::<TokenStream>().unwrap();
+    "b\"\\\r\n  \rx\"".parse::<TokenStream>().unwrap_err();
+    "b\"\\\r\n  \u{a0}x\"".parse::<TokenStream>().unwrap_err();
+    "br\"\u{a0}\"".parse::<TokenStream>().unwrap_err();
+}
+
+#[test]
+fn literal_c_string() {
+    let strings = r###"
+        c"hello\x80我叫\u{1F980}"  // from the RFC
+        cr"\"
+        cr##"Hello "world"!"##
+        c"\t\n\r\"\\"
+    "###;
+
+    let mut tokens = strings.parse::<TokenStream>().unwrap().into_iter();
+
+    for expected in &[
+        r#"c"hello\x80我叫\u{1F980}""#,
+        r#"cr"\""#,
+        r###"cr##"Hello "world"!"##"###,
+        r#"c"\t\n\r\"\\""#,
+    ] {
+        match tokens.next().unwrap() {
+            TokenTree::Literal(literal) => {
+                assert_eq!(literal.to_string(), *expected);
+            }
+            unexpected => panic!("unexpected token: {:?}", unexpected),
+        }
+    }
+
+    if let Some(unexpected) = tokens.next() {
+        panic!("unexpected token: {:?}", unexpected);
+    }
+
+    for invalid in &[r#"c"\0""#, r#"c"\x00""#, r#"c"\u{0}""#, "c\"\0\""] {
+        if let Ok(unexpected) = invalid.parse::<TokenStream>() {
+            panic!("unexpected token: {:?}", unexpected);
+        }
+    }
 }
 
 #[test]
@@ -265,6 +318,30 @@ fn literal_parse() {
 }
 
 #[test]
+fn literal_span() {
+    let positive = "0.1".parse::<Literal>().unwrap();
+    let negative = "-0.1".parse::<Literal>().unwrap();
+    let subspan = positive.subspan(1..2);
+
+    #[cfg(not(span_locations))]
+    {
+        let _ = negative;
+        assert!(subspan.is_none());
+    }
+
+    #[cfg(span_locations)]
+    {
+        assert_eq!(positive.span().start().column, 0);
+        assert_eq!(positive.span().end().column, 3);
+        assert_eq!(negative.span().start().column, 0);
+        assert_eq!(negative.span().end().column, 4);
+        assert_eq!(subspan.unwrap().source_text().unwrap(), ".");
+    }
+
+    assert!(positive.subspan(1..4).is_none());
+}
+
+#[test]
 fn roundtrip() {
     fn roundtrip(p: &str) {
         println!("parse: {}", p);
@@ -603,8 +680,8 @@ fn non_ascii_tokens() {
     check_spans("/*** ábc */ x", &[(1, 12, 1, 13)]);
     check_spans(r#""abc""#, &[(1, 0, 1, 5)]);
     check_spans(r#""ábc""#, &[(1, 0, 1, 5)]);
-    check_spans(r###"r#"abc"#"###, &[(1, 0, 1, 8)]);
-    check_spans(r###"r#"ábc"#"###, &[(1, 0, 1, 8)]);
+    check_spans(r##"r#"abc"#"##, &[(1, 0, 1, 8)]);
+    check_spans(r##"r#"ábc"#"##, &[(1, 0, 1, 8)]);
     check_spans("r#\"a\nc\"#", &[(1, 0, 2, 3)]);
     check_spans("r#\"á\nc\"#", &[(1, 0, 2, 3)]);
     check_spans("'a'", &[(1, 0, 1, 3)]);
@@ -624,7 +701,6 @@ fn non_ascii_tokens() {
     check_spans("ábc// foo", &[(1, 0, 1, 3)]);
     check_spans("ábć// foo", &[(1, 0, 1, 3)]);
     check_spans("b\"a\\\n c\"", &[(1, 0, 2, 3)]);
-    check_spans("b\"a\\\n\u{00a0}c\"", &[(1, 0, 2, 3)]);
 }
 
 #[cfg(span_locations)]
@@ -656,6 +732,18 @@ fn check_spans_internal(ts: TokenStream, lines: &mut &[(usize, usize, usize, usi
 }
 
 #[test]
+fn whitespace() {
+    // space, horizontal tab, vertical tab, form feed, carriage return, line
+    // feed, non-breaking space, left-to-right mark, right-to-left mark
+    let various_spaces = " \t\u{b}\u{c}\r\n\u{a0}\u{200e}\u{200f}";
+    let tokens = various_spaces.parse::<TokenStream>().unwrap();
+    assert_eq!(tokens.into_iter().count(), 0);
+
+    let lone_carriage_returns = " \r \r\r\n ";
+    lone_carriage_returns.parse::<TokenStream>().unwrap();
+}
+
+#[test]
 fn byte_order_mark() {
     let string = "\u{feff}foo";
     let tokens = string.parse::<TokenStream>().unwrap();