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nextbus_test.go
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nextbus_test.go
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package nextbus
import (
"encoding/xml"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"path/filepath"
"reflect"
"runtime"
"strings"
"testing"
)
const baseURL = "http://webservices.nextbus.com/service/publicXMLFeed"
func makeURL(command string, params ...string) string {
if len(params) != 0 && len(params)%2 != 0 {
panic(fmt.Sprintf("Illegal params %q. Must be 0 len or an even length", params))
}
var values []string
values = append(values, "command="+url.QueryEscape(command))
for len(params) != 0 {
values = append(values, url.QueryEscape(params[0])+"="+url.QueryEscape(params[1]))
params = params[2:]
}
return baseURL + "?" + strings.Join(values, "&")
}
// Maps from expected url to xml response
var fakes = map[string]string{
makeURL("agencyList"): `
<body copyright="just testing">
<agency tag="alpha" title="The First" regionTitle="What a Transit Agency"/>
<agency tag="beta" title="The Second" regionTitle="Never never land"/>
</body>
`,
makeURL("routeList", "a", "alpha"): `
<body copyright="All data copyright some transit company.">
<route tag="1" title="1-first"/>
<route tag="2" title="2-second"/>
</body>
`,
makeURL("routeConfig", "a", "alpha"): `
<body copyright="All data copyright some transit company.">
<route tag="1" title="1-first" color="660000" oppositeColor="ffffff" latMin="12.3456789" latMax="45.6789012" lonMin="-123.4567890" lonMax="-456.78901">
<stop tag="1123" title="First stop" lat="12.3456789" lon="-123.45789" stopId="98765"/>
<stop tag="1234" title="Second stop" lat="23.4567890" lon="-456.78901" stopId="87654"/>
<direction tag="1out" title="Outbound to somewhere" name="Outbound" useForUI="true">
<stop tag="1123"/>
<stop tag="1234"/>
</direction>
<direction tag="1in" title="Inbound to somewhere" name="Inbound" useForUI="true">
<stop tag="1234"/>
<stop tag="1123"/>
</direction>
</route>
</body>
`,
makeURL("vehicleLocations", "a", "alpha", "t", "0"): `
<body copyright="All data copyright some transit company.">
<vehicle id="1111" routeTag="1" dirTag="1_outbound" lat="37.77513" lon="-122.41946" secsSinceReport="4" predictable="true" heading="225" speedKmHr="0" leadingVehicleId="1112"/>
<vehicle id="2222" routeTag="2" dirTag="2_inbound" lat="37.74891" lon="-122.45848" secsSinceReport="5" predictable="true" heading="217" speedKmHr="0" leadingVehicleId="2223"/>
<lastTime time="1234567890123"/>
</body>
`,
makeURL("predictions", "a", "alpha", "stopId", "11123"): `
<body copyright="All data copyright some transit company.">
<predictions agencyTitle="some transit company" routeTitle="The First" routeTag="1" stopTitle="Some Station Outbound" stopTag="1123">
<direction title="Outbound">
<prediction epochTime="1490564618948" seconds="623" minutes="10" isDeparture="false" dirTag="7____O_F00" vehicle="6581" block="0712" tripTag="7447642"/>
<prediction epochTime="1490565376790" seconds="1381" minutes="23" isDeparture="false" affectedByLayover="true" dirTag="7____O_F00" vehicle="6720" block="0705" tripTag="7447643"/>
</direction>
</predictions>
<predictions agencyTitle="some transit company" routeTitle="The Second" routeTag="2" stopTitle="Some Station Outbound" stopTag="1123">
<direction title="Outbound">
<prediction epochTime="1490564681782" seconds="686" minutes="11" isDeparture="false" dirTag="6____O_F00" vehicle="8618" block="0609" tripTag="7447028"/>
<prediction epochTime="1490565307084" seconds="1311" minutes="21" isDeparture="false" dirTag="6____O_F00" vehicle="8807" block="0602" tripTag="7447029"/>
</direction>
</predictions>
</body>
`,
makeURL("predictionsForMultiStops", "a", "alpha", "stops", "1|1123", "stops", "1|1124"): `
<body copyright="All data copyright some transit company.">
<predictions agencyTitle="some transit company" routeTitle="The First" routeTag="1" stopTitle="Some Station Outbound" stopTag="1123">
<direction title="Outbound">
<prediction epochTime="1487277081162" seconds="181" minutes="3" isDeparture="false" dirTag="1____O_F00" vehicle="1111" vehiclesInConsist="2" block="9999" tripTag="7318265"/>
<prediction epochTime="1487277463429" seconds="563" minutes="9" isDeparture="false" affectedByLayover="true" dirTag="1____O_F00" vehicle="2222" vehiclesInConsist="2" block="8888" tripTag="7318264"/>
</direction>
</predictions>
<predictions agencyTitle="some transit company" routeTitle="The First" routeTag="1" stopTitle="Some Other Station Outbound" stopTag="1124">
<direction title="Outbound">
<prediction epochTime="1487278019915" seconds="1120" minutes="18" isDeparture="false" affectedByLayover="true" dirTag="1____O_F00" vehicle="4444" vehiclesInConsist="2" block="6666" tripTag="7318264"/>
</direction>
<message text="No Elevator at Blah blah Station" priority="Normal"/>
</predictions>
</body>
`}
type fakeRoundTripper struct {
t *testing.T
}
func (f fakeRoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
if req.Body != nil {
req.Body.Close()
req.Body = nil
}
url := req.URL.String()
xml, ok := fakes[url]
if !ok {
valid := []string{}
for k := range fakes {
valid = append(valid, k)
}
f.t.Fatalf("Unexpected url %q. allowable urls are=%q", url, valid)
return nil, nil
}
res := http.Response{}
res.StatusCode = http.StatusOK
res.Body = ioutil.NopCloser(strings.NewReader(xml))
res.Request = req
return &res, nil
}
func testingClient(t *testing.T) *http.Client {
httpClient := http.Client{}
httpClient.Transport = fakeRoundTripper{t}
return &httpClient
}
func xmlName(s string) xml.Name {
return xml.Name{Space: "", Local: s}
}
func stopMarkers(tags ...string) []StopMarker {
var result []StopMarker
for _, t := range tags {
result = append(result, StopMarker{xmlName("stop"), t})
}
return result
}
func TestGetAgencyList(t *testing.T) {
nb := NewClient(testingClient(t))
found, err := nb.GetAgencyList()
ok(t, err)
expected := []Agency{
Agency{xmlName("agency"), "alpha", "The First", "What a Transit Agency"},
Agency{xmlName("agency"), "beta", "The Second", "Never never land"},
}
equals(t, expected, found)
}
func TestGetRouteList(t *testing.T) {
nb := NewClient(testingClient(t))
found, err := nb.GetRouteList("alpha")
ok(t, err)
expected := []Route{
Route{xmlName("route"), "1", "1-first"},
Route{xmlName("route"), "2", "2-second"},
}
equals(t, expected, found)
}
func TestGetRouteConfig(t *testing.T) {
nb := NewClient(testingClient(t))
found, err := nb.GetRouteConfig("alpha")
ok(t, err)
expected := []RouteConfig{
RouteConfig{
xmlName("route"),
[]Stop{
Stop{
xmlName("stop"),
"1123", "First stop", "12.3456789", "-123.45789", "98765",
},
Stop{
xmlName("stop"),
"1234", "Second stop", "23.4567890", "-456.78901", "87654",
},
},
"1",
"1-first",
"660000",
"ffffff",
"12.3456789",
"45.6789012",
"-123.4567890",
"-456.78901",
[]Direction{
Direction{
xmlName("direction"),
"1out", "Outbound to somewhere", "Outbound", "true",
stopMarkers("1123", "1234"),
},
Direction{
xmlName("direction"),
"1in", "Inbound to somewhere", "Inbound", "true",
stopMarkers("1234", "1123"),
},
},
nil,
},
}
equals(t, expected, found)
}
func TestGetVehicleLocations(t *testing.T) {
nb := NewClient(testingClient(t))
found, err := nb.GetVehicleLocations("alpha")
ok(t, err)
expected := LocationResponse{
xmlName("body"),
[]VehicleLocation{
VehicleLocation{
xmlName("vehicle"),
"1111",
"1",
"1_outbound",
"37.77513",
"-122.41946",
"4",
"true",
"225",
"0",
"1112",
},
VehicleLocation{
xmlName("vehicle"),
"2222",
"2",
"2_inbound",
"37.74891",
"-122.45848",
"5",
"true",
"217",
"0",
"2223",
},
},
LocationLastTime{xmlName("lastTime"), "1234567890123"},
}
equals(t, &expected, found)
}
func TestGetStopPredictions(t *testing.T) {
nb := NewClient(testingClient(t))
found, err := nb.GetStopPredictions("alpha", "11123")
ok(t, err)
expected := []PredictionData{
PredictionData{
xmlName("predictions"),
[]PredictionDirection{
PredictionDirection{
xmlName("direction"),
[]Prediction{
Prediction{
xmlName("prediction"),
"1490564618948",
"623",
"10",
"false",
"",
"7____O_F00",
"6581",
"",
"0712",
"7447642",
},
Prediction{
xmlName("prediction"),
"1490565376790",
"1381",
"23",
"false",
"true",
"7____O_F00",
"6720",
"",
"0705",
"7447643",
},
},
"Outbound",
},
},
nil,
"some transit company",
"The First",
"1",
"Some Station Outbound",
"1123",
},
PredictionData{
xmlName("predictions"),
[]PredictionDirection{
PredictionDirection{
xmlName("direction"),
[]Prediction{
Prediction{
xmlName("prediction"),
"1490564681782",
"686",
"11",
"false",
"",
"6____O_F00",
"8618",
"",
"0609",
"7447028",
},
Prediction{
xmlName("prediction"),
"1490565307084",
"1311",
"21",
"false",
"",
"6____O_F00",
"8807",
"",
"0602",
"7447029",
},
},
"Outbound",
},
},
nil,
"some transit company",
"The Second",
"2",
"Some Station Outbound",
"1123",
},
}
equals(t, expected, found)
}
func TestGetPredictionsForMultiStops(t *testing.T) {
nb := NewClient(testingClient(t))
found, err := nb.GetPredictionsForMultiStops("alpha", PredReqStop("1", "1123"), PredReqStop("1", "1124"))
ok(t, err)
expected := []PredictionData{
PredictionData{
xmlName("predictions"),
[]PredictionDirection{
PredictionDirection{
xmlName("direction"),
[]Prediction{
Prediction{
xmlName("prediction"),
"1487277081162",
"181",
"3",
"false",
"",
"1____O_F00",
"1111",
"2",
"9999",
"7318265",
},
Prediction{
xmlName("prediction"),
"1487277463429",
"563",
"9",
"false",
"true",
"1____O_F00",
"2222",
"2",
"8888",
"7318264",
},
},
"Outbound",
},
},
nil,
"some transit company",
"The First",
"1",
"Some Station Outbound",
"1123",
},
PredictionData{
xmlName("predictions"),
[]PredictionDirection{
PredictionDirection{
xmlName("direction"),
[]Prediction{
Prediction{
xmlName("prediction"),
"1487278019915",
"1120",
"18",
"false",
"true",
"1____O_F00",
"4444",
"2",
"6666",
"7318264",
},
},
"Outbound",
},
},
[]Message{
Message{
xmlName("message"),
"No Elevator at Blah blah Station",
"Normal",
},
},
"some transit company",
"The First",
"1",
"Some Other Station Outbound",
"1124",
},
}
equals(t, expected, found)
}
// assert fails the test if the condition is false.
func assert(tb testing.TB, condition bool, msg string, v ...interface{}) {
if !condition {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d: "+msg+"\033[39m\n\n", append([]interface{}{filepath.Base(file), line}, v...)...)
tb.FailNow()
}
}
// ok fails the test if an err is not nil.
func ok(tb testing.TB, err error) {
if err != nil {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d: unexpected error: %s\033[39m\n\n", filepath.Base(file), line, err.Error())
tb.FailNow()
}
}
// equals fails the test if exp is not equal to act.
func equals(tb testing.TB, exp, act interface{}) {
if !reflect.DeepEqual(exp, act) {
_, file, line, _ := runtime.Caller(1)
fmt.Printf("\033[31m%s:%d:\n\n\texp: %#v\n\n\tgot: %#v\033[39m\n\n", filepath.Base(file), line, exp, act)
tb.FailNow()
}
}