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applemusic_test.go
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applemusic_test.go
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package applemusic
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"net/url"
"reflect"
"strings"
"testing"
)
var (
// mux is the HTTP request multiplexer used with the test server.
mux *http.ServeMux
// client is the Apple Music client being tested.
client *Client
// server is a test HTTP server used to provide mock API responses.
server *httptest.Server
)
// setup sets up a test HTTP server along with a applemusic.Client that is configured to talk to that test server.
func setup() {
// test server
mux = http.NewServeMux()
server = httptest.NewServer(mux)
// Apple Music client configured to use test server
client = NewClient(nil)
u, _ := url.Parse(server.URL)
client.BaseURL = u
}
// teardown closes the test HTTP server.
func teardown() {
server.Close()
}
func testMethod(t *testing.T, r *http.Request, want string) {
if got := r.Method; got != want {
t.Errorf("Request method: %v, want %v", got, want)
}
}
type values map[string]string
func testFormValues(t *testing.T, r *http.Request, values values) {
want := url.Values{}
for k, v := range values {
want.Set(k, v)
}
_ = r.ParseForm()
if got := r.Form; !reflect.DeepEqual(got, want) {
t.Errorf("Request parameters: %v, want %v", got, want)
}
}
func testJsonBodyValues(t *testing.T, r *http.Request, j []byte) {
body, _ := ioutil.ReadAll(r.Body)
var got map[string]interface{}
_ = json.Unmarshal(body, &got)
var want map[string]interface{}
_ = json.Unmarshal(j, &want)
if !reflect.DeepEqual(got, want) {
t.Errorf("Request body: %v, want %v", got, want)
}
}
func testURLParseError(t *testing.T, err error) {
if err == nil {
t.Errorf("Expected error to be returned")
}
if err, ok := err.(*url.Error); !ok || err.Op != "parse" {
t.Errorf("Expected URL parse error, got %+v", err)
}
}
func Test_makeIdsOptions(t *testing.T) {
testCases := []struct {
ids []string
opt *Options
want IdsOptions
}{
{
ids: []string{},
opt: nil,
want: IdsOptions{},
},
{
ids: []string{"1", "2", "3"},
opt: nil,
want: IdsOptions{
Ids: "1,2,3",
},
},
{
ids: []string{"1", "2", "3"},
opt: &Options{
Language: "en-us",
},
want: IdsOptions{
Ids: "1,2,3",
Options: Options{
Language: "en-us",
},
},
},
}
for k, tc := range testCases {
t.Run(fmt.Sprintf("case=%d", k), func(t *testing.T) {
got := makeIdsOptions(tc.ids, tc.opt)
if !reflect.DeepEqual(got, tc.want) {
t.Errorf("makeIdsOptions() is %v, want %v", got, tc.want)
}
})
}
}
// test we don't override the params already given when another param is specified in the url
func Test_addOptions_noParamsOverride(t *testing.T) {
actualParams := "?offset=100"
want := "/v1/me/library/playlists/p.2P6WgVAuVeYx3OB/tracks?l=fr&offset=100"
got, _ := addOptions("/v1/me/library/playlists/p.2P6WgVAuVeYx3OB/tracks"+actualParams, Options{Language: "fr"})
if got != want {
t.Errorf("Url is %s, want %s", got, want)
}
}
func TestNewClient(t *testing.T) {
c := NewClient(nil)
if got, want := c.BaseURL.String(), defaultBaseURL; got != want {
t.Errorf("NewClient BaseURL is %v, want %v", got, want)
}
if got, want := c.UserAgent, defaultUserAgent; got != want {
t.Errorf("NewClient UserAgent is %v, want %v", got, want)
}
}
func TestNewRequest(t *testing.T) {
c := NewClient(nil)
type foo struct {
Name string `json:"name"`
Type string `json:"type,omitempty"`
}
inURL, outURL := "/foo", defaultBaseURL+"foo"
inBody, outBody := &foo{Name: "Tester"}, `{"name":"Tester"}`+"\n"
req, _ := c.NewRequest("GET", inURL, inBody)
// test that relative URL was expanded
if got, want := req.URL.String(), outURL; got != want {
t.Errorf("NewRequest(%q) URL is %v, want %v", inURL, got, want)
}
// test that body was JSON encoded
body, _ := ioutil.ReadAll(req.Body)
if got, want := string(body), outBody; got != want {
t.Errorf("NewRequest(%q) Body is %v, want %v", inBody, got, want)
}
// test that default user-agent is attached to the request
if got, want := req.Header.Get("User-Agent"), c.UserAgent; got != want {
t.Errorf("NewRequest() User-Agent is %v, want %v", got, want)
}
}
func TestNewRequest_invalidJSON(t *testing.T) {
c := NewClient(nil)
type T struct {
A map[interface{}]interface{}
}
_, err := c.NewRequest("GET", "/", &T{})
if err == nil {
t.Error("Expected error to be returned.")
}
if err, ok := err.(*json.UnsupportedTypeError); !ok {
t.Errorf("Expected a JSON error; got %#v.", err)
}
}
func TestNewRequest_badURL(t *testing.T) {
c := NewClient(nil)
_, err := c.NewRequest("GET", ":", nil)
testURLParseError(t, err)
}
func TestNewRequest_emptyUserAgent(t *testing.T) {
c := NewClient(nil)
c.UserAgent = ""
req, err := c.NewRequest("GET", "/", nil)
if err != nil {
t.Fatalf("NewRequest returned unexpected error: %v", err)
}
if _, ok := req.Header["User-Agent"]; ok {
t.Fatal("constructed request contains unexpected User-Agent header")
}
}
func TestNewRequest_emptyBody(t *testing.T) {
c := NewClient(nil)
req, err := c.NewRequest("GET", "/", nil)
if err != nil {
t.Fatalf("NewRequest returned unexpected error: %v", err)
}
if req.Body != nil {
t.Fatalf("constructed request contains a non-nil Body")
}
}
func TestDo(t *testing.T) {
setup()
defer teardown()
type foo struct {
A string
}
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
if m := "GET"; m != r.Method {
t.Errorf("Request method = %v, want %v", r.Method, m)
}
fmt.Fprint(w, `{"A":"a"}`)
})
req, _ := client.NewRequest("GET", "/", nil)
body := new(foo)
_, _ = client.Do(context.Background(), req, body)
want := &foo{"a"}
if !reflect.DeepEqual(body, want) {
t.Errorf("Response body = %v, want %v", body, want)
}
}
func TestDo_httpError(t *testing.T) {
setup()
defer teardown()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
http.Error(w, "Bad Request", 400)
})
req, _ := client.NewRequest("GET", "/", nil)
_, err := client.Do(context.Background(), req, nil)
if err == nil {
t.Error("Expected HTTP 400 error.")
}
}
func TestDo_noContent(t *testing.T) {
setup()
defer teardown()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
w.WriteHeader(http.StatusNoContent)
})
var body json.RawMessage
req, _ := client.NewRequest("GET", "/", nil)
_, err := client.Do(context.Background(), req, &body)
if err != nil {
t.Fatalf("Do returned unexpected error: %v", err)
}
}
func TestCheckResponse(t *testing.T) {
res := &http.Response{
Request: &http.Request{},
StatusCode: http.StatusBadRequest,
Body: ioutil.NopCloser(strings.NewReader(`{
"errors": [
{
"id": "ID",
"title": "Invalid Parameter Value",
"detail": "Invalid language tag 'zh-tw'",
"status": "400",
"code": "40005",
"source": {
"parameter": "l"
}
}
]
}`)),
}
err := CheckResponse(res).(*ErrorResponse)
if err == nil {
t.Errorf("Expected error response.")
}
want := &ErrorResponse{
Response: res,
Errors: []Error{
{
Id: "ID",
Title: "Invalid Parameter Value",
Detail: "Invalid language tag 'zh-tw'",
Status: "400",
Code: "40005",
Source: Source{
Parameter: "l",
},
},
},
}
if !reflect.DeepEqual(err, want) {
t.Errorf("Error = %#v, want %#v", err, want)
}
}
// ensure that we properly handle API errors that do not contain a response body.
func TestCheckResponse_noBody(t *testing.T) {
res := &http.Response{
Request: &http.Request{},
StatusCode: http.StatusBadRequest,
Body: ioutil.NopCloser(strings.NewReader("")),
}
err := CheckResponse(res).(*ErrorResponse)
if err == nil {
t.Errorf("Expected error response.")
}
want := &ErrorResponse{
Response: res,
}
if !reflect.DeepEqual(err, want) {
t.Errorf("Error = %#v, want %#v", err, want)
}
}
func TestCheckResponse_statusUnauthorized(t *testing.T) {
u, _ := url.Parse("/")
res := &http.Response{
Request: &http.Request{
Method: "GET",
URL: u,
},
StatusCode: http.StatusUnauthorized,
Body: ioutil.NopCloser(strings.NewReader("Unauthorized")),
}
err := CheckResponse(res)
if err == nil {
t.Error("Expected error response.")
}
if got, want := err.(*UnauthorizedError).Message, "Unauthorized"; got != want {
t.Errorf("Error = %v, want %v", got, want)
}
if got, want := err.Error(), "GET /: 401 Unauthorized"; got != want {
t.Errorf("Error = %v, want %v", got, want)
}
}
func TestCheckResponse_statusTooManyRequests(t *testing.T) {
res := &http.Response{
Request: &http.Request{},
StatusCode: http.StatusTooManyRequests,
Body: ioutil.NopCloser(strings.NewReader(`{"message":"API capacity exceeded"}`)),
}
err := CheckResponse(res)
if err == nil {
t.Error("Expected error response.")
}
if got, want := err.(*TooManyRequestsError).Message, "API capacity exceeded"; got != want {
t.Errorf("Error = %v, want %v", got, want)
}
}
func TestTransport(t *testing.T) {
setup()
defer teardown()
token := "TOKEN"
musicUserToken := "MUSIC_USER_TOKEN"
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
if got, want := r.Header.Get("Authorization"), fmt.Sprintf("Bearer %s", token); got != want {
t.Errorf("request contained token %s, want %s", got, want)
}
if got, want := r.Header.Get("Music-User-Token"), musicUserToken; got != want {
t.Errorf("request contained music user token %s, want %s", got, want)
}
})
tp := &Transport{
Token: token,
MusicUserToken: musicUserToken,
}
c := NewClient(tp.Client())
c.BaseURL = client.BaseURL
req, _ := c.NewRequest("GET", "/", nil)
_, _ = c.Do(context.Background(), req, nil)
}
func TestTransport_transport(t *testing.T) {
// default transport
tp := &Transport{}
if tp.transport() != http.DefaultTransport {
t.Errorf("Expected http.DefaultTransport to be used.")
}
// custom transport
tp = &Transport{
Transport: &http.Transport{},
}
if tp.transport() == http.DefaultTransport {
t.Errorf("Expected custom transport to be used.")
}
}