dataStoreParams.put("boolKey", true);
        assertEquals("true", dataStoreParams.getAsString("boolKey"));
    }

    // Test getAsString with null value
    public void test_getAsStringWithNullValue() {
        dataStoreParams.put("nullKey", null);
        assertNull(dataStoreParams.getAsString("nullKey"));
    }

    // Test getAsString for non-existent key