diff --git a/crates/rattler_conda_types/src/match_spec/matcher.rs b/crates/rattler_conda_types/src/match_spec/matcher.rs
index 665a31ce9..256d5d4d4 100644
--- a/crates/rattler_conda_types/src/match_spec/matcher.rs
+++ b/crates/rattler_conda_types/src/match_spec/matcher.rs
@@ -116,6 +116,7 @@ impl Serialize for StringMatcher {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use assert_matches::assert_matches;
 
     #[test]
     fn test_string_matcher() {
@@ -151,4 +152,36 @@ mod tests {
             .unwrap()
             .matches("foobar"));
     }
+
+    #[test]
+    fn test_special_characters_matches() {
+        let special_characters = "~!@#$%^&*()_-+={}[]|;:'<>,.?/";
+        for special_character in special_characters.chars() {
+            assert!(StringMatcher::from_str(&special_character.to_string())
+                .unwrap()
+                .matches(&special_character.to_string()));
+        }
+    }
+
+    #[test]
+    fn test_invalid_regex() {
+        let _invalid_regex = "^.*[oo|bar.*$";
+        assert_matches!(
+            StringMatcher::from_str(_invalid_regex),
+            Err(StringMatcherParseError::InvalidRegex {
+                regex: _invalid_regex,
+            })
+        );
+    }
+
+    #[test]
+    fn test_invalid_glob() {
+        let _invalid_glob = "[foo*";
+        assert_matches!(
+            StringMatcher::from_str(_invalid_glob),
+            Err(StringMatcherParseError::InvalidGlob {
+                glob: _invalid_glob,
+            })
+        );
+    }
 }
diff --git a/crates/rattler_conda_types/src/match_spec/parse.rs b/crates/rattler_conda_types/src/match_spec/parse.rs
index b1b8ceea9..6380222a3 100644
--- a/crates/rattler_conda_types/src/match_spec/parse.rs
+++ b/crates/rattler_conda_types/src/match_spec/parse.rs
@@ -474,7 +474,8 @@ mod tests {
     use std::sync::Arc;
 
     use super::{
-        split_version_and_build, strip_brackets, BracketVec, MatchSpec, ParseMatchSpecError,
+        split_version_and_build, strip_brackets, strip_package_name, BracketVec, MatchSpec,
+        ParseMatchSpecError,
     };
     use crate::match_spec::parse::parse_bracket_list;
     use crate::{BuildNumberSpec, Channel, NamelessMatchSpec, VersionSpec};
@@ -506,15 +507,6 @@ mod tests {
         assert_eq!(result.0, "bla ");
         let expected: BracketVec = smallvec![("version", "1.2.3"), ("build_number", "1")];
         assert_eq!(result.1, expected);
-
-        assert_matches!(
-            strip_brackets(r#"bla [version="1.2.3", build_number=]"#),
-            Err(ParseMatchSpecError::InvalidBracket)
-        );
-        assert_matches!(
-            strip_brackets(r#"bla [version="1.2.3, build_number=1]"#),
-            Err(ParseMatchSpecError::InvalidBracket)
-        );
     }
 
     #[test]
@@ -730,4 +722,38 @@ mod tests {
             .collect();
         insta::assert_yaml_snapshot!("parsed matchspecs", evaluated);
     }
+
+    #[test]
+    fn test_invalid_bracket() {
+        assert_matches!(
+            strip_brackets(r#"bla [version="1.2.3", build_number=]"#),
+            Err(ParseMatchSpecError::InvalidBracket)
+        );
+        assert_matches!(
+            strip_brackets(r#"bla [version="1.2.3, build_number=1]"#),
+            Err(ParseMatchSpecError::InvalidBracket)
+        );
+    }
+
+    #[test]
+    fn test_invalid_bracket_key() {
+        let _unknown_key = String::from("unknown");
+        let spec = MatchSpec::from_str("conda-forge::foo[unknown=1.0.*]");
+        assert_matches!(
+            spec,
+            Err(ParseMatchSpecError::InvalidBracketKey(_unknown_key))
+        );
+    }
+
+    #[test]
+    fn test_invalid_number_of_colons() {
+        let spec = MatchSpec::from_str("conda-forge::::foo[version=\"1.0.*\"]");
+        assert_matches!(spec, Err(ParseMatchSpecError::InvalidNumberOfColons));
+    }
+
+    #[test]
+    fn test_missing_package_name() {
+        let package_name = strip_package_name("");
+        assert_matches!(package_name, Err(ParseMatchSpecError::MissingPackageName));
+    }
 }