support "=" version operator

src/atom/mod.rs

@@ -15,6 +15,7 @@ pub enum Blocker {
 pub enum VersionOperator {
     Lt,
     Gt,
+    Eq,
     LtEq,
     GtEq,
     Roughly,

src/atom/parsers.rs

@@ -23,6 +23,7 @@ pub fn version_operator<'a>() -> impl Parser<&'a str, Output = VersionOperator>
         .or(tag(">=").map(|_| VersionOperator::GtEq))
         .or(tag("<").map(|_| VersionOperator::Lt))
         .or(tag(">").map(|_| VersionOperator::Gt))
+        .or(tag("=").map(|_| VersionOperator::Eq))
         .or(tag("~").map(|_| VersionOperator::Roughly))
 }
 
@@ -315,4 +316,11 @@ mod test {
 
         assert!(atom().check_finished(it).is_err());
     }
+
+    #[test]
+    fn test_atom_with_eq_version_operator() {
+        let it = InputIter::new("=foo/bar-1.0.0");
+
+        atom().check_finished(it).unwrap();
+    }
 }