tests: add well known controller tests

internal/controller/well_known_controller_test.go

@@ -0,0 +1,127 @@
+package controller_test
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http/httptest"
+	"os"
+	"testing"
+
+	"github.com/gin-gonic/gin"
+	"github.com/steveiliop56/tinyauth/internal/bootstrap"
+	"github.com/steveiliop56/tinyauth/internal/config"
+	"github.com/steveiliop56/tinyauth/internal/controller"
+	"github.com/steveiliop56/tinyauth/internal/repository"
+	"github.com/steveiliop56/tinyauth/internal/service"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWellKnownController(t *testing.T) {
+	oidcServiceCfg := service.OIDCServiceConfig{
+		Clients: map[string]config.OIDCClientConfig{
+			"test": {
+				ClientID:            "some-client-id",
+				ClientSecret:        "some-client-secret",
+				TrustedRedirectURIs: []string{"https://test.example.com/callback"},
+				Name:                "Test Client",
+			},
+		},
+		PrivateKeyPath: "/tmp/tinyauth_testing_key.pem",
+		PublicKeyPath:  "/tmp/tinyauth_testing_key.pub",
+		Issuer:         "https://tinyauth.example.com",
+		SessionExpiry:  500,
+	}
+
+	type testCase struct {
+		description string
+		run         func(t *testing.T, router *gin.Engine, recorder *httptest.ResponseRecorder)
+	}
+
+	tests := []testCase{
+		{
+			description: "Ensure well-known endpoint returns correct OIDC configuration",
+			run: func(t *testing.T, router *gin.Engine, recorder *httptest.ResponseRecorder) {
+				req := httptest.NewRequest("GET", "/.well-known/openid-configuration", nil)
+				router.ServeHTTP(recorder, req)
+
+				assert.Equal(t, 200, recorder.Code)
+
+				res := controller.OpenIDConnectConfiguration{}
+				err := json.Unmarshal(recorder.Body.Bytes(), &res)
+				assert.NoError(t, err)
+
+				expected := controller.OpenIDConnectConfiguration{
+					Issuer:                            oidcServiceCfg.Issuer,
+					AuthorizationEndpoint:             fmt.Sprintf("%s/authorize", oidcServiceCfg.Issuer),
+					TokenEndpoint:                     fmt.Sprintf("%s/api/oidc/token", oidcServiceCfg.Issuer),
+					UserinfoEndpoint:                  fmt.Sprintf("%s/api/oidc/userinfo", oidcServiceCfg.Issuer),
+					JwksUri:                           fmt.Sprintf("%s/.well-known/jwks.json", oidcServiceCfg.Issuer),
+					ScopesSupported:                   service.SupportedScopes,
+					ResponseTypesSupported:            service.SupportedResponseTypes,
+					GrantTypesSupported:               service.SupportedGrantTypes,
+					SubjectTypesSupported:             []string{"pairwise"},
+					IDTokenSigningAlgValuesSupported:  []string{"RS256"},
+					TokenEndpointAuthMethodsSupported: []string{"client_secret_basic", "client_secret_post"},
+					ClaimsSupported:                   []string{"sub", "updated_at", "name", "preferred_username", "email", "email_verified", "groups"},
+					ServiceDocumentation:              "https://tinyauth.app/docs/guides/oidc",
+				}
+
+				assert.Equal(t, res, expected)
+			},
+		},
+		{
+			description: "Ensure well-known endpoint returns correct JWKS",
+			run: func(t *testing.T, router *gin.Engine, recorder *httptest.ResponseRecorder) {
+				req := httptest.NewRequest("GET", "/.well-known/jwks.json", nil)
+				router.ServeHTTP(recorder, req)
+
+				assert.Equal(t, 200, recorder.Code)
+
+				decodedBody := make(map[string]any)
+				err := json.Unmarshal(recorder.Body.Bytes(), &decodedBody)
+				assert.NoError(t, err)
+
+				keys, ok := decodedBody["keys"].([]any)
+				assert.True(t, ok)
+				assert.Len(t, keys, 1)
+
+				keyData, ok := keys[0].(map[string]any)
+				assert.True(t, ok)
+				assert.Equal(t, "RSA", keyData["kty"])
+				assert.Equal(t, "sig", keyData["use"])
+				assert.Equal(t, "RS256", keyData["alg"])
+			},
+		},
+	}
+
+	app := bootstrap.NewBootstrapApp(config.Config{})
+
+	db, err := app.SetupDatabase("/tmp/tinyauth_test.db")
+	assert.NoError(t, err)
+
+	queries := repository.New(db)
+
+	oidcService := service.NewOIDCService(oidcServiceCfg, queries)
+	err = oidcService.Init()
+	assert.NoError(t, err)
+
+	for _, test := range tests {
+		t.Run(test.description, func(t *testing.T) {
+			router := gin.Default()
+			gin.SetMode(gin.TestMode)
+
+			recorder := httptest.NewRecorder()
+
+			wellKnownController := controller.NewWellKnownController(controller.WellKnownControllerConfig{}, oidcService, router)
+			wellKnownController.SetupRoutes()
+
+			test.run(t, router, recorder)
+		})
+	}
+
+	err = db.Close()
+	assert.NoError(t, err)
+
+	err = os.Remove("/tmp/tinyauth_test.db")
+	assert.NoError(t, err)
+}