feat: add hide dotfiles param (#1148)

rules/rules_test.go

@@ -0,0 +1,23 @@
+package rules
+
+import "testing"
+
+func TestMatchHidden(t *testing.T) {
+	cases := map[string]bool{
+		"/":                   false,
+		"/src":                false,
+		"/src/":               false,
+		"/.circleci":          true,
+		"/a/b/c/.docker.json": true,
+		".docker.json":        true,
+		"Dockerfile":          false,
+		"/Dockerfile":         false,
+	}
+
+	for path, want := range cases {
+		got := MatchHidden(path)
+		if got != want {
+			t.Errorf("MatchHidden(%s)=%v; want %v", path, got, want)
+		}
+	}
+}