Merge branch 'feature/ldap-sync-edgecases' into 'master'

LDAP Sync blocked user edgecases

Allow GitLab admins to block otherwise valid GitLab LDAP users
(https://gitlab.com/gitlab-org/gitlab-ce/issues/3462)

Based on the discussion on the original issue, we are going to differentiate "normal" block operations to the ldap automatic ones in order to make some decisions when its one or the other.

Expected behavior:

- [x] "ldap_blocked" users respond to both `blocked?` and `ldap_blocked?`
- [x] "ldap_blocked" users can't be unblocked by the Admin UI
- [x] "ldap_blocked" users can't be unblocked by the API
- [x] Block operations that are originated from LDAP synchronization will flag user as "ldap_blocked"
- [x] Only "ldap_blocked" users will be automatically unblocked by LDAP synchronization
- [x] When LDAP identity is removed, we should convert `ldap_blocked` into `blocked`
 
Mockup for the Admin UI with both "ldap_blocked" and normal "blocked" users:
![image](/uploads/4f56fc17b73cb2c9e2a154a22e7ad291/image.png)

There will be another MR for the EE version.

See merge request !2242

2 files changed, 66 insertions, 16 deletions

diff --git a/spec/models/identity_spec.rb b/spec/models/identity_spec.rb
new file mode 100644
index 00000000000..5afe042e154
--- /dev/null
+++ b/spec/models/identity_spec.rb
@@ -0,0 +1,38 @@
+# == Schema Information
+#
+# Table name: identities
+#
+#  id         :integer          not null, primary key
+#  extern_uid :string(255)
+#  provider   :string(255)
+#  user_id    :integer
+#  created_at :datetime
+#  updated_at :datetime
+#
+
+require 'spec_helper'
+
+RSpec.describe Identity, models: true do
+
+  describe 'relations' do
+    it { is_expected.to belong_to(:user) }
+  end
+
+  describe 'fields' do
+    it { is_expected.to respond_to(:provider) }
+    it { is_expected.to respond_to(:extern_uid) }
+  end
+
+  describe '#is_ldap?' do
+    let(:ldap_identity) { create(:identity, provider: 'ldapmain') }
+    let(:other_identity) { create(:identity, provider: 'twitter') }
+
+    it 'returns true if it is a ldap identity' do
+      expect(ldap_identity.ldap?).to be_truthy
+    end
+
+    it 'returns false if it is not a ldap identity' do
+      expect(other_identity.ldap?).to be_falsey
+    end
+  end
+end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
index 3cd63b2b0e8..0bef68e2885 100644
--- a/spec/models/user_spec.rb
+++ b/spec/models/user_spec.rb
@@ -569,27 +569,39 @@ describe User, models: true do
     end
   end
 
-  describe :ldap_user? do
-    it "is true if provider name starts with ldap" do
-      user = create(:omniauth_user, provider: 'ldapmain')
-      expect( user.ldap_user? ).to be_truthy
-    end
+  context 'ldap synchronized user' do
+    describe :ldap_user? do
+      it 'is true if provider name starts with ldap' do
+        user = create(:omniauth_user, provider: 'ldapmain')
+        expect(user.ldap_user?).to be_truthy
+      end
 
-    it "is false for other providers" do
-      user = create(:omniauth_user, provider: 'other-provider')
-      expect( user.ldap_user? ).to be_falsey
+      it 'is false for other providers' do
+        user = create(:omniauth_user, provider: 'other-provider')
+        expect(user.ldap_user?).to be_falsey
+      end
+
+      it 'is false if no extern_uid is provided' do
+        user = create(:omniauth_user, extern_uid: nil)
+        expect(user.ldap_user?).to be_falsey
+      end
     end
 
-    it "is false if no extern_uid is provided" do
-      user = create(:omniauth_user, extern_uid: nil)
-      expect( user.ldap_user? ).to be_falsey
+    describe :ldap_identity do
+      it 'returns ldap identity' do
+        user = create :omniauth_user
+        expect(user.ldap_identity.provider).not_to be_empty
+      end
     end
-  end
 
-  describe :ldap_identity do
-    it "returns ldap identity" do
-      user = create :omniauth_user
-      expect(user.ldap_identity.provider).not_to be_empty
+    describe '#ldap_block' do
+      let(:user) { create(:omniauth_user, provider: 'ldapmain', name: 'John Smith') }
+
+      it 'blocks user flaging the action caming from ldap' do
+        user.ldap_block
+        expect(user.blocked?).to be_truthy
+        expect(user.ldap_blocked?).to be_truthy
+      end
     end
   end