1 files changed, 142 insertions, 0 deletions

diff --git a/vendor/nom/src/branch/tests.rs b/vendor/nom/src/branch/tests.rs
new file mode 100644
index 000000000..ecd44407e
--- /dev/null
+++ b/vendor/nom/src/branch/tests.rs
@@ -0,0 +1,142 @@
+use crate::branch::{alt, permutation};
+use crate::bytes::streaming::tag;
+use crate::error::ErrorKind;
+use crate::internal::{Err, IResult, Needed};
+#[cfg(feature = "alloc")]
+use crate::{
+  error::ParseError,
+  lib::std::{
+    fmt::Debug,
+    string::{String, ToString},
+  },
+};
+
+#[cfg(feature = "alloc")]
+#[derive(Debug, Clone, PartialEq)]
+pub struct ErrorStr(String);
+
+#[cfg(feature = "alloc")]
+impl From<u32> for ErrorStr {
+  fn from(i: u32) -> Self {
+    ErrorStr(format!("custom error code: {}", i))
+  }
+}
+
+#[cfg(feature = "alloc")]
+impl<'a> From<&'a str> for ErrorStr {
+  fn from(i: &'a str) -> Self {
+    ErrorStr(format!("custom error message: {}", i))
+  }
+}
+
+#[cfg(feature = "alloc")]
+impl<I: Debug> ParseError<I> for ErrorStr {
+  fn from_error_kind(input: I, kind: ErrorKind) -> Self {
+    ErrorStr(format!("custom error message: ({:?}, {:?})", input, kind))
+  }
+
+  fn append(input: I, kind: ErrorKind, other: Self) -> Self {
+    ErrorStr(format!(
+      "custom error message: ({:?}, {:?}) - {:?}",
+      input, kind, other
+    ))
+  }
+}
+
+#[cfg(feature = "alloc")]
+#[test]
+fn alt_test() {
+  fn work(input: &[u8]) -> IResult<&[u8], &[u8], ErrorStr> {
+    Ok((&b""[..], input))
+  }
+
+  #[allow(unused_variables)]
+  fn dont_work(input: &[u8]) -> IResult<&[u8], &[u8], ErrorStr> {
+    Err(Err::Error(ErrorStr("abcd".to_string())))
+  }
+
+  fn work2(input: &[u8]) -> IResult<&[u8], &[u8], ErrorStr> {
+    Ok((input, &b""[..]))
+  }
+
+  fn alt1(i: &[u8]) -> IResult<&[u8], &[u8], ErrorStr> {
+    alt((dont_work, dont_work))(i)
+  }
+  fn alt2(i: &[u8]) -> IResult<&[u8], &[u8], ErrorStr> {
+    alt((dont_work, work))(i)
+  }
+  fn alt3(i: &[u8]) -> IResult<&[u8], &[u8], ErrorStr> {
+    alt((dont_work, dont_work, work2, dont_work))(i)
+  }
+  //named!(alt1, alt!(dont_work | dont_work));
+  //named!(alt2, alt!(dont_work | work));
+  //named!(alt3, alt!(dont_work | dont_work | work2 | dont_work));
+
+  let a = &b"abcd"[..];
+  assert_eq!(
+    alt1(a),
+    Err(Err::Error(error_node_position!(
+      a,
+      ErrorKind::Alt,
+      ErrorStr("abcd".to_string())
+    )))
+  );
+  assert_eq!(alt2(a), Ok((&b""[..], a)));
+  assert_eq!(alt3(a), Ok((a, &b""[..])));
+
+  fn alt4(i: &[u8]) -> IResult<&[u8], &[u8]> {
+    alt((tag("abcd"), tag("efgh")))(i)
+  }
+  let b = &b"efgh"[..];
+  assert_eq!(alt4(a), Ok((&b""[..], a)));
+  assert_eq!(alt4(b), Ok((&b""[..], b)));
+}
+
+#[test]
+fn alt_incomplete() {
+  fn alt1(i: &[u8]) -> IResult<&[u8], &[u8]> {
+    alt((tag("a"), tag("bc"), tag("def")))(i)
+  }
+
+  let a = &b""[..];
+  assert_eq!(alt1(a), Err(Err::Incomplete(Needed::new(1))));
+  let a = &b"b"[..];
+  assert_eq!(alt1(a), Err(Err::Incomplete(Needed::new(1))));
+  let a = &b"bcd"[..];
+  assert_eq!(alt1(a), Ok((&b"d"[..], &b"bc"[..])));
+  let a = &b"cde"[..];
+  assert_eq!(alt1(a), Err(Err::Error(error_position!(a, ErrorKind::Tag))));
+  let a = &b"de"[..];
+  assert_eq!(alt1(a), Err(Err::Incomplete(Needed::new(1))));
+  let a = &b"defg"[..];
+  assert_eq!(alt1(a), Ok((&b"g"[..], &b"def"[..])));
+}
+
+#[test]
+fn permutation_test() {
+  fn perm(i: &[u8]) -> IResult<&[u8], (&[u8], &[u8], &[u8])> {
+    permutation((tag("abcd"), tag("efg"), tag("hi")))(i)
+  }
+
+  let expected = (&b"abcd"[..], &b"efg"[..], &b"hi"[..]);
+
+  let a = &b"abcdefghijk"[..];
+  assert_eq!(perm(a), Ok((&b"jk"[..], expected)));
+  let b = &b"efgabcdhijk"[..];
+  assert_eq!(perm(b), Ok((&b"jk"[..], expected)));
+  let c = &b"hiefgabcdjk"[..];
+  assert_eq!(perm(c), Ok((&b"jk"[..], expected)));
+
+  let d = &b"efgxyzabcdefghi"[..];
+  assert_eq!(
+    perm(d),
+    Err(Err::Error(error_node_position!(
+      &b"efgxyzabcdefghi"[..],
+      ErrorKind::Permutation,
+      error_position!(&b"xyzabcdefghi"[..], ErrorKind::Tag)
+    )))
+  );
+
+  let e = &b"efgabc"[..];
+  assert_eq!(perm(e), Err(Err::Incomplete(Needed::new(1))));
+}