def test_length_convert(self):
logging.debug("testing length convert")
result = Length.convert(1800, "meter", "mile")
self.assertIsNotNone(result)
return
def get(self, to_unit):
"""REST GET implementation for the URI:
http://<server>:<port>/length/<to_unit>?from_unit=<from_unit>&
from_value=<from_value>
Parameters
----------
to_unit: str (required)
length unit (required)
It is assumed that this method is called within the context of an HTTP
request. And that the HTTP request contains query parameters
with the request.args as containing the following:
from_unit: str (required)
length unit
from_value: str (required)
numeric value
Returns
-------
str:
A JSON string containing the response
Raises
------
BadRequest if there is an error validating the input parameters or
some other error processing this method.
"""
params = request.args
if not params:
raise BadRequest("Parameters "
"from_unit=<from_unit>&from_value=<_from_value> "
"are missing")
if not isinstance(params, dict):
raise BadRequest("params must be an instance of dict")
if "from_unit" not in params:
raise BadRequest("Missing required from_unit parameter")
if "from_value" not in params:
raise BadRequest("Missing required from_value parameter")
from_unit = params.get("from_unit")
from_value = params.get("from_value")
if not is_number(from_value):
raise BadRequest(("Parameter from_value=[{0}] not valid. "
"A numeric value must be provided.")
.format(from_value))
from_value = float(from_value)
if from_unit == to_unit:
raise BadRequest("from_unit=[{0}] and to_unit=[{1}] units "
"cannot be equal".format(from_unit, to_unit))
# pint unit registry only accepts lower case letters for length units
from_unit = from_unit.lower().strip()
to_unit = to_unit.lower().strip()
result = Length.convert(from_value, from_unit, to_unit)
data = OrderedDict()
data["from_unit"] = from_unit
data["from_value"] = from_value
data["to_unit"] = to_unit
data["to_value"] = result
response = OrderedDict()
response[STATUS_KEY] = STATUS_SUCCESS
response[DATA_KEY] = data
json_result = jsonify(response)
return json_result
