Restore the old test

Author: GrahamDennis

Diff for: cue/errors/errors_test.go

@@ -67,6 +67,18 @@ func TestErrorList_Reset(t *testing.T) {
 	}
 }
 
+func TestErrorList_Sort(t *testing.T) {
+	tests := []struct {
+		name string
+		p    list
+	}{
+		// TODO: Add test cases.
+	}
+	for _, tt := range tests {
+		tt.p.Sort()
+	}
+}
+
 func TestErrorList_RemoveMultiples(t *testing.T) {
 	error1 := Promote(fmt.Errorf("error1"), "msg1")
 	error2 := Promote(fmt.Errorf("error2"), "msg2")