Tapl: diagnosing anomalies

        }

    }

    private String getAnomalyMessage() {

        final UiObject2 object = mDevice.findObject(By.res("android", "alertTitle"));

        if (object != null) {

            return "System alert popup is visible: " + object.getText();

        }

        if (!mDevice.hasObject(By.textStartsWith(""))) return "Screen is empty";

        return null;

    }

    private void fail(String message) {

        log("Hierarchy dump for: " + getContextDescription() + message);

        message = "http://go/tapl : " + getContextDescription() + message;

        final String anomaly = getAnomalyMessage();

        if (anomaly != null) message = anomaly + ", which causes:\n" + message;

        log("Hierarchy dump for: " + message);

        dumpViewHierarchy();

        Assert.fail("http://go/tapl : " + getContextDescription() + message);

        Assert.fail(message);

    }

    private String getContextDescription() {