Enable dummy SAML provider to allow saml group link features

Author: timofurrer

scripts/gitlab.rb

@@ -1,20 +1,38 @@
-pages_external_url 'http://127.0.0.1:5051'
-pages_nginx['redirect_http_to_https'] = false
-pages_nginx['ssl_certificate'] = "/etc/gitlab/ssl/gitlab-registry.pem"
-pages_nginx['ssl_certificate_key'] = "/etc/gitlab/ssl/gitlab-registry.key"
-
-registry_external_url 'http://127.0.0.1:5050'
-registry['enable']                    = true
-registry_nginx['ssl_certificate']     = "/etc/gitlab/ssl/gitlab-registry.pem"
-registry_nginx['ssl_certificate_key'] = "/etc/gitlab/ssl/gitlab-registry.key"
-
-gitlab_rails['initial_shared_runners_registration_token'] = "ACCTEST1234567890123_RUNNER_REG_TOKEN"
-
-# This setting is required to disable caching for application settings
-# which is required to test different scenarios in the acceptance tests.
-# see https://gitlab.com/gitlab-org/gitlab/-/issues/364812#note_986366898
-# see https://github.com/gitlabhq/terraform-provider-gitlab/pull/1128
-gitlab_rails['application_settings_cache_seconds'] = 0
-gitlab_rails['env'] = {
-    'IN_MEMORY_APPLICATION_SETTINGS' => 'false'
-}
+pages_external_url 'http://127.0.0.1:5051'
+pages_nginx['redirect_http_to_https'] = false
+pages_nginx['ssl_certificate'] = "/etc/gitlab/ssl/gitlab-registry.pem"
+pages_nginx['ssl_certificate_key'] = "/etc/gitlab/ssl/gitlab-registry.key"
+
+registry_external_url 'http://127.0.0.1:5050'
+registry['enable']                    = true
+registry_nginx['ssl_certificate']     = "/etc/gitlab/ssl/gitlab-registry.pem"
+registry_nginx['ssl_certificate_key'] = "/etc/gitlab/ssl/gitlab-registry.key"
+
+gitlab_rails['initial_shared_runners_registration_token'] = "ACCTEST1234567890123_RUNNER_REG_TOKEN"
+
+# This setting is required to disable caching for application settings
+# which is required to test different scenarios in the acceptance tests.
+# see https://gitlab.com/gitlab-org/gitlab/-/issues/364812#note_986366898
+# see https://github.com/gitlabhq/terraform-provider-gitlab/pull/1128
+gitlab_rails['application_settings_cache_seconds'] = 0
+gitlab_rails['env'] = {
+    'IN_MEMORY_APPLICATION_SETTINGS' => 'false'
+}
+
+# Enable SAML authentication for GitLab (required for SAML group links).
+# see https://docs.gitlab.com/ee/integration/saml.html
+gitlab_rails['omniauth_allow_single_sign_on'] = ['saml']
+gitlab_rails['omniauth_block_auto_created_users'] = false
+gitlab_rails['omniauth_providers'] = [
+  {
+    name: "saml",
+    label: "Dummy Test Provider",
+    args: {
+      assertion_consumer_service_url: "https://gitlab.example.com/users/auth/saml/callback",
+      idp_cert_fingerprint: "aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa:aa",
+      idp_sso_target_url: "https://saml.provider.example.com/sso/saml",
+      issuer: "https://gitlab.example.com",
+      name_identifier_format: "urn:oasis:names:tc:SAML:2.0:nameid-format:persistent"
+    }
+  }
+]