diff --git a/lib/tests/filter_globset.rs b/lib/tests/filter_globset.rs
new file mode 100644
index 00000000..de187553
--- /dev/null
+++ b/lib/tests/filter_globset.rs
@@ -0,0 +1,56 @@
+use watchexec::{
+	error::RuntimeError,
+	event::{Event, Tag},
+	filter::{globset::GlobsetFilterer, Filterer},
+};
+
+trait Harness {
+	fn check_path(&self, path: &str) -> std::result::Result<bool, RuntimeError>;
+
+	fn does_pass(&self, path: &str) {
+		assert!(
+			matches!(self.check_path(path), Ok(true)),
+			"path {:?} (expected pass)",
+			path
+		);
+	}
+
+	fn doesnt_pass(&self, path: &str) {
+		assert!(
+			matches!(self.check_path(path), Ok(false)),
+			"path {:?} (expected fail)",
+			path
+		);
+	}
+}
+
+impl Harness for GlobsetFilterer {
+	fn check_path(&self, path: &str) -> std::result::Result<bool, RuntimeError> {
+		let event = Event {
+			tags: vec![Tag::Path {
+				path: path.into(),
+				file_type: None,
+			}],
+			metadata: Default::default(),
+		};
+
+		self.check_event(&event)
+	}
+}
+
+#[test]
+fn exact_filename() {
+	let filterer = GlobsetFilterer::new(
+		"/test",
+		vec![("Cargo.toml".to_owned(), None)],
+		vec![],
+		vec![],
+	)
+	.unwrap();
+
+	filterer.does_pass("Cargo.toml");
+	filterer.doesnt_pass("Cargo.json");
+	filterer.doesnt_pass("Gemfile.toml");
+	filterer.doesnt_pass("FINAL-FINAL.docx");
+	filterer.doesnt_pass("/a/folder");
+}