test(internalauth): add unittests (#258)

* test(internalauth): add unittests

Co-authored-by: Thorsten Essig <tessig@users.noreply.github.com>

core/internalauth/application/oauthService_test.go

@@ -0,0 +1,56 @@
+package application_test
+
+import (
+	"context"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"testing"
+
+	"flamingo.me/flamingo/v3/core/internalauth/application"
+	"github.com/stretchr/testify/assert"
+	"golang.org/x/oauth2/clientcredentials"
+)
+
+func TestOauthService(t *testing.T) {
+	service := new(application.OauthService)
+	service.Inject(&struct {
+		BaseURL string `inject:"config:core.internalauth.baseurl"`
+	}{
+		BaseURL: "http://example.com/",
+	})
+
+	t.Run("GetConfig", func(t *testing.T) {
+		cfg := service.GetConfig("/path", "client-id", "client-secret", "grant-type")
+		assert.Equal(t, "client-id", cfg.ClientID)
+		assert.Equal(t, "client-secret", cfg.ClientSecret)
+		assert.Equal(t, url.Values{}, cfg.EndpointParams)
+		assert.Equal(t, "http://example.com/path", cfg.TokenURL)
+	})
+
+	t.Run("GetOauthToken", func(t *testing.T) {
+		_, err := service.GetOauthToken(context.Background(), &clientcredentials.Config{})
+		assert.Error(t, err)
+
+		server := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+			w.Header().Set("Content-type", "application/json")
+			fmt.Fprintf(w, `{"access_token": "test"}`)
+		}))
+		defer server.Close()
+		token, err := service.GetOauthToken(context.Background(), &clientcredentials.Config{
+			TokenURL: server.URL,
+		})
+		assert.NoError(t, err)
+		assert.Equal(t, "test", token.AccessToken)
+	})
+
+	t.Run("GetClaimsFromToken", func(t *testing.T) {
+		claims := service.GetClaimsFromToken("token")
+		assert.Empty(t, claims)
+
+		claims = service.GetClaimsFromToken("eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ0ZXN0IjoidmFsdWUifQ.signature")
+		assert.NotEmpty(t, claims)
+		assert.Equal(t, "value", claims["test"])
+	})
+}