diff --git a/fixtures/config/rule/link-to-sample.hcl b/fixtures/config/rule/link-to-sample.hcl
new file mode 120000
index 0000000..8da0162
--- /dev/null
+++ b/fixtures/config/rule/link-to-sample.hcl
@@ -0,0 +1 @@
+sample.hcl
\ No newline at end of file
diff --git a/fixtures/config/rule/sample.hcl b/fixtures/config/rule/sample.hcl
new file mode 100644
index 0000000..8ceb704
--- /dev/null
+++ b/fixtures/config/rule/sample.hcl
@@ -0,0 +1 @@
+# dummy sample
diff --git a/pkg/config/rule/rule_test.go b/pkg/config/rule/rule_test.go
new file mode 100644
index 0000000..a8de20c
--- /dev/null
+++ b/pkg/config/rule/rule_test.go
@@ -0,0 +1,43 @@
+package rule
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+const (
+	fixturePath = "../../../fixtures/config/rule"
+)
+
+func TestPathPrefixed(t *testing.T) {
+	assert := assert.New(t)
+
+	assert.False(Rule{Prefix: "./prefix"}.pathPrefixed("/etc/passwd"))
+	assert.True(Rule{Prefix: ""}.pathPrefixed("/etc/passwd"))
+	assert.True(Rule{Prefix: "./prefix"}.pathPrefixed("./prefix/file"))
+}
+
+func TestNormalizeNameEx(t *testing.T) {
+	assert := assert.New(t)
+
+	r := Rule{NameEx: "*.inc.php"}
+
+	assert.Equal(r.normalizeNameEx(), "^.*\\.inc\\.php$")
+}
+
+func TestNameMatched(t *testing.T) {
+	assert := assert.New(t)
+
+	files, err := os.ReadDir(fixturePath)
+	if err != nil {
+		panic(err)
+	}
+
+	for _, file := range files {
+		assert.True(Rule{}.nameMatched(file))
+		assert.True(Rule{NameEx: ".*"}.nameMatched(file))
+		assert.False(Rule{NameEx: "some-nonsense"}.nameMatched(file))
+	}
+}