afl: merge parse_balance target into parse

parse_balance is a superset of parse

.github/workflows/ci.yml

@@ -72,7 +72,6 @@ jobs:
       matrix:
         target:
           - parse
-          - parse_balance
           - html
     runs-on: ubuntu-latest
     steps:

tests/afl/Cargo.toml

@@ -17,10 +17,6 @@ path = "src/main.rs"
 name = "parse"
 path = "src/parse.rs"
 
-[[bin]]
-name = "parse_balance"
-path = "src/parse_balance.rs"
-
 [[bin]]
 name = "html"
 path = "src/html.rs"

tests/afl/src/lib.rs

@@ -5,27 +5,26 @@ use html5ever::tendril::TendrilSink;
 use html5ever::tokenizer;
 use html5ever::tree_builder;
 
+/// Perform sanity checks on events.
 pub fn parse(data: &[u8]) {
-    if let Ok(s) = std::str::from_utf8(data) {
-        jotdown::Parser::new(s).last();
-    }
-}
-
-/// Ensure containers are always balanced, i.e. opened and closed in correct order.
-pub fn parse_balance(data: &[u8]) {
     if let Ok(s) = std::str::from_utf8(data) {
         let mut open = Vec::new();
         for event in jotdown::Parser::new(s) {
             match event {
                 jotdown::Event::Start(c, ..) => open.push(c.clone()),
-                jotdown::Event::End(c) => assert_eq!(open.pop().unwrap(), c),
+                jotdown::Event::End(c) => {
+                    // closes correct event
+                    assert_eq!(open.pop().unwrap(), c);
+                }
                 _ => {}
             }
         }
+        // no missing close
         assert_eq!(open, &[]);
     }
 }
 
+/// Validate rendered html output.
 pub fn html(data: &[u8]) {
     if data.iter().any(|i| *i == 0) {
         return;

tests/afl/src/main.rs

@@ -8,7 +8,6 @@ fn main() {
 
     let f = match target.as_str() {
         "parse" => jotdown_afl::parse,
-        "parse_balance" => jotdown_afl::parse_balance,
         "html" => jotdown_afl::html,
         _ => panic!("unknown target '{}'", target),
     };

tests/afl/src/parse_balance.rs

@@ -1,3 +0,0 @@
-fn main() {
-    afl::fuzz!(|data: &[u8]| { jotdown_afl::parse_balance(data) });
-}