1 files changed, 103 insertions, 0 deletions
diff --git a/routers/web/auth/oauth_test.go b/routers/web/auth/oauth_test.go
new file mode 100644
index 0000000..5a4a646
--- /dev/null
+++ b/routers/web/auth/oauth_test.go
@@ -0,0 +1,103 @@
+// Copyright 2021 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+package auth
+
+import (
+	"testing"
+
+	"code.gitea.io/gitea/models/auth"
+	"code.gitea.io/gitea/models/db"
+	"code.gitea.io/gitea/models/unittest"
+	user_model "code.gitea.io/gitea/models/user"
+	"code.gitea.io/gitea/modules/setting"
+	"code.gitea.io/gitea/services/auth/source/oauth2"
+
+	"github.com/golang-jwt/jwt/v5"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
+)
+
+func createAndParseToken(t *testing.T, grant *auth.OAuth2Grant) *oauth2.OIDCToken {
+	signingKey, err := oauth2.CreateJWTSigningKey("HS256", make([]byte, 32))
+	require.NoError(t, err)
+	assert.NotNil(t, signingKey)
+
+	response, terr := newAccessTokenResponse(db.DefaultContext, grant, signingKey, signingKey)
+	assert.Nil(t, terr)
+	assert.NotNil(t, response)
+
+	parsedToken, err := jwt.ParseWithClaims(response.IDToken, &oauth2.OIDCToken{}, func(token *jwt.Token) (any, error) {
+		assert.NotNil(t, token.Method)
+		assert.Equal(t, signingKey.SigningMethod().Alg(), token.Method.Alg())
+		return signingKey.VerifyKey(), nil
+	})
+	require.NoError(t, err)
+	assert.True(t, parsedToken.Valid)
+
+	oidcToken, ok := parsedToken.Claims.(*oauth2.OIDCToken)
+	assert.True(t, ok)
+	assert.NotNil(t, oidcToken)
+
+	return oidcToken
+}
+
+func TestNewAccessTokenResponse_OIDCToken(t *testing.T) {
+	require.NoError(t, unittest.PrepareTestDatabase())
+
+	grants, err := auth.GetOAuth2GrantsByUserID(db.DefaultContext, 3)
+	require.NoError(t, err)
+	assert.Len(t, grants, 1)
+
+	// Scopes: openid
+	oidcToken := createAndParseToken(t, grants[0])
+	assert.Empty(t, oidcToken.Name)
+	assert.Empty(t, oidcToken.PreferredUsername)
+	assert.Empty(t, oidcToken.Profile)
+	assert.Empty(t, oidcToken.Picture)
+	assert.Empty(t, oidcToken.Website)
+	assert.Empty(t, oidcToken.UpdatedAt)
+	assert.Empty(t, oidcToken.Email)
+	assert.False(t, oidcToken.EmailVerified)
+
+	user := unittest.AssertExistsAndLoadBean(t, &user_model.User{ID: 5})
+	grants, err = auth.GetOAuth2GrantsByUserID(db.DefaultContext, user.ID)
+	require.NoError(t, err)
+	assert.Len(t, grants, 1)
+
+	// Scopes: openid profile email
+	oidcToken = createAndParseToken(t, grants[0])
+	assert.Equal(t, user.Name, oidcToken.Name)
+	assert.Equal(t, user.Name, oidcToken.PreferredUsername)
+	assert.Equal(t, user.HTMLURL(), oidcToken.Profile)
+	assert.Equal(t, user.AvatarLink(db.DefaultContext), oidcToken.Picture)
+	assert.Equal(t, user.Website, oidcToken.Website)
+	assert.Equal(t, user.UpdatedUnix, oidcToken.UpdatedAt)
+	assert.Equal(t, user.Email, oidcToken.Email)
+	assert.Equal(t, user.IsActive, oidcToken.EmailVerified)
+
+	// set DefaultShowFullName to true
+	oldDefaultShowFullName := setting.UI.DefaultShowFullName
+	setting.UI.DefaultShowFullName = true
+	defer func() {
+		setting.UI.DefaultShowFullName = oldDefaultShowFullName
+	}()
+
+	// Scopes: openid profile email
+	oidcToken = createAndParseToken(t, grants[0])
+	assert.Equal(t, user.FullName, oidcToken.Name)
+	assert.Equal(t, user.Name, oidcToken.PreferredUsername)
+	assert.Equal(t, user.HTMLURL(), oidcToken.Profile)
+	assert.Equal(t, user.AvatarLink(db.DefaultContext), oidcToken.Picture)
+	assert.Equal(t, user.Website, oidcToken.Website)
+	assert.Equal(t, user.UpdatedUnix, oidcToken.UpdatedAt)
+	assert.Equal(t, user.Email, oidcToken.Email)
+	assert.Equal(t, user.IsActive, oidcToken.EmailVerified)
+}
+
+func TestEncodeCodeChallenge(t *testing.T) {
+	// test vector from https://datatracker.ietf.org/doc/html/rfc7636#page-18
+	codeChallenge, err := encodeCodeChallenge("dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk")
+	require.NoError(t, err)
+	assert.Equal(t, "E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM", codeChallenge)
+}