def METHOD_NAME(self):
    response = self.fetch('/timeseries/demo/conc_chl', method="POST",
                          body='')
    self.assertBadRequestResponse(
        response,
        'HTTP 400:'
        ' Bad Request ('
        'Body does not contain valid JSON:'
        ' Expecting value: line 1 column 1 (char 0)'
        ')'
    )
    response = self.fetch(
        '/timeseries/demo/conc_chl', method="POST",
        body='{"type":"Point"}'
    )
    self.assertBadRequestResponse(
        response,
        'GeoJSON object expected'
    )