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handler_spec.lua
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handler_spec.lua
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local handler = require "kong.plugins.ndfd-xml-as-json.handler"
local json = require "cjson"
local xml = require "xml"
describe("kong.plugins.ndfd-xml-as-json.handler", function()
it("should return a table", function()
assert.is.equal("table", type(handler))
end)
describe("#new", function()
it("is a function", function()
assert.is.equal("function", type(handler.new))
end)
end)
describe("#access", function()
it("is a function", function()
assert.is.equal("function", type(handler.access))
end)
it("should transform request JSON to XML", function()
local params = {
latitude = 38.99,
longitude = -77.01
}
local body_data = json.encode(params)
local headers = {}
ngx.req.read_body = function() return nil end
ngx.req.get_body_data = function() return body_data end
ngx.req.set_body_data = function(new_data) body_data = new_data end
ngx.req.set_header = function(k,v) headers[k] = v end
ngx.req.clear_header = function(k) headers[k] = nil end
local subject = handler()
subject:access()
local req_xml = xml.load(body_data)
assert.is.equal(string.format("%f", params.latitude), xml.find(req_xml, 'latitude')[1])
assert.is.equal(string.format("%f", params.longitude), xml.find(req_xml, 'longitude')[1])
assert.is.equal("1", xml.find(req_xml, 'maxt')[1])
assert.is.equal("text/xml", headers["Content-Type"])
end)
end)
describe("#header_filter", function()
it("is a function", function()
assert.is.equal("function", type(handler.header_filter))
end)
end)
describe("#body_filter", function()
it("is a function", function()
assert.is.equal("function", type(handler.body_filter))
end)
describe("for a typical XML response", function()
before_each(function()
local data_file = io.open("./spec/data/ndfd-response.xml", "r")
local body_data = data_file:read("*a")
data_file:close()
ngx.arg = {}
ngx.arg[1] = body_data
ngx.arg[2] = true -- EOF flag
subject = handler()
end)
it("should transform response XML to JSON", function()
subject:body_filter()
local res_json = json.decode(ngx.arg[1])
assert.is.equal('temperature', res_json.name)
assert.is.equal('maximum', res_json.type)
assert.is.equal('Fahrenheit', res_json.units)
assert.is.equal('38.99', res_json.latitude)
assert.is.equal('-77.01', res_json.longitude)
assert.is.equal("table", type(res_json.values))
end)
it("returns a list of merged values & times", function()
subject:body_filter()
local res_json = json.decode(ngx.arg[1])
assert.is.equal("46", res_json.values[1].value)
assert.is.equal("2016-01-14T07:00:00-05:00", res_json.values[1].time)
assert.is.equal("49", res_json.values[2].value)
assert.is.equal("2016-01-15T07:00:00-05:00", res_json.values[2].time)
assert.is.equal("48", res_json.values[3].value)
assert.is.equal("2016-01-16T07:00:00-05:00", res_json.values[3].time)
assert.is.equal("38", res_json.values[4].value)
assert.is.equal("2016-01-17T07:00:00-05:00", res_json.values[4].time)
assert.is.equal("28", res_json.values[5].value)
assert.is.equal("2016-01-18T07:00:00-05:00", res_json.values[5].time)
assert.is.equal("30", res_json.values[6].value)
assert.is.equal("2016-01-19T07:00:00-05:00", res_json.values[6].time)
assert.is.equal("35", res_json.values[7].value)
assert.is.equal("2016-01-20T07:00:00-05:00", res_json.values[7].time)
end)
end)
it("should collect chunked response", function()
data_file = io.open("./spec/data/ndfd-response.xml", "r")
local subject = handler()
ngx.arg = {}
-- Chunk by line in the data file
ngx.arg[1] = data_file:read("*l")
subject:body_filter()
ngx.arg[1] = data_file:read("*l")
subject:body_filter()
ngx.arg[1] = data_file:read("*l")
subject:body_filter()
ngx.arg[1] = data_file:read("*l")
subject:body_filter()
ngx.arg[1] = data_file:read("*l")
subject:body_filter()
-- All the remaining content
ngx.arg[1] = data_file:read("*a")
ngx.arg[2] = true -- EOF flag
subject:body_filter()
data_file:close()
local res_json = json.decode(ngx.arg[1])
assert.is.equal('maximum', res_json.type)
end)
end)
end)