add clientcredentials pkg for oauth2

test/integration/browse_test.go

@@ -0,0 +1,45 @@
+// +build integration
+package integration
+
+import (
+	"context"
+	"os"
+	"testing"
+
+	_ "github.com/joho/godotenv/autoload"
+	"github.com/jybp/ebay"
+	"github.com/jybp/ebay/clientcredentials"
+)
+
+var client *ebay.Client
+
+func init() {
+	clientID := os.Getenv("SANDBOX_CLIENT_ID")
+	clientSecret := os.Getenv("SANDBOX_CLIENT_SECRET")
+	if clientID == "" || clientSecret == "" {
+		panic("No SANDBOX_CLIENT_ID or SANDBOX_CLIENT_SECRET. Tests won't run.")
+	}
+	conf := clientcredentials.Config{
+		ClientID:     clientID,
+		ClientSecret: clientSecret,
+		TokenURL:     "https://api.sandbox.ebay.com/identity/v1/oauth2/token",
+		Scopes:       []string{"https://api.ebay.com/oauth/api_scope"},
+	}
+	client = ebay.NewSandboxClient(conf.Client(context.Background()))
+}
+
+func TestAuthorization(t *testing.T) {
+	// https://developer.ebay.com/my/api_test_tool?index=0&api=browse&call=item_summary_search__GET&variation=json
+	req, err := client.NewRequest("GET", "buy/browse/v1/item_summary/search?q=test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	into := map[string]interface{}{}
+	err = client.Do(context.Background(), req, &into)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if testing.Verbose() {
+		t.Log(into)
+	}
+}