def METHOD_NAME(self):
    response = self.fetch(
        '/timeseries/demo/conc_chl?tolerance=60',
        method="POST",
        body='{"type": "Point", "coordinates": [1, 51]}'
    )
    self.assertResponseOK(response)
    response = self.fetch(
        '/timeseries/demo/conc_chl?tolerance=2D',
        method="POST",
        body='{"type": "Point", "coordinates": [1, 51]}'
    )
    self.assertBadRequestResponse(
        response,
        'HTTP 400:'
        ' Bad Request ('
        "Query parameter 'tolerance' must have type 'float'."
        ')'
    )