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-rw-r--r--third_party/rust/nom/tests/fnmut.rs39
1 files changed, 39 insertions, 0 deletions
diff --git a/third_party/rust/nom/tests/fnmut.rs b/third_party/rust/nom/tests/fnmut.rs
new file mode 100644
index 0000000000..b1486cbe63
--- /dev/null
+++ b/third_party/rust/nom/tests/fnmut.rs
@@ -0,0 +1,39 @@
+use nom::{
+ bytes::complete::tag,
+ multi::{many0, many0_count},
+};
+
+#[test]
+fn parse() {
+ let mut counter = 0;
+
+ let res = {
+ let mut parser = many0::<_, _, (), _>(|i| {
+ counter += 1;
+ tag("abc")(i)
+ });
+
+ parser("abcabcabcabc").unwrap()
+ };
+
+ println!("res: {:?}", res);
+ assert_eq!(counter, 5);
+}
+
+#[test]
+fn accumulate() {
+ let mut v = Vec::new();
+
+ let (_, count) = {
+ let mut parser = many0_count::<_, _, (), _>(|i| {
+ let (i, o) = tag("abc")(i)?;
+ v.push(o);
+ Ok((i, ()))
+ });
+ parser("abcabcabcabc").unwrap()
+ };
+
+ println!("v: {:?}", v);
+ assert_eq!(count, 4);
+ assert_eq!(v.len(), 4);
+}