Add specs for authentication and config

spec/lib/gitlab/ldap/authentication_spec.rb

+require 'spec_helper'
+
+describe Gitlab::LDAP::Authentication do
+  let(:klass) { Gitlab::LDAP::Authentication }
+  let(:user) { create(:user, :ldap, extern_uid: dn) }
+  let(:dn) { 'uid=john,ou=people,dc=example,dc=com' }
+  let(:login) { 'john' }
+  let(:password) { 'password' }
+
+  describe :login do
+    let(:adapter) { double :adapter }
+    before do
+      Gitlab::LDAP::Config.stub(enabled?: true)
+    end
+
+    it "finds the user if authentication is successful" do
+      user
+      # try only to fake the LDAP call
+      klass.any_instance.stub(adapter: double(:adapter,
+        bind_as: double(:ldap_user, dn: dn)
+      ))
+      expect(klass.login(login, password)).to be_true
+    end
+
+    it "is false if the user does not exist" do
+      # try only to fake the LDAP call
+      klass.any_instance.stub(adapter: double(:adapter,
+        bind_as: double(:ldap_user, dn: dn)
+      ))
+      expect(klass.login(login, password)).to be_false
+    end
+
+    it "is false if authentication fails" do
+      user
+      # try only to fake the LDAP call
+      klass.any_instance.stub(adapter: double(:adapter, bind_as: nil))
+      expect(klass.login(login, password)).to be_false
+    end
+
+    it "fails if ldap is disabled" do
+      Gitlab::LDAP::Config.stub(enabled?: false)
+      expect(klass.login(login, password)).to be_false
+    end
+
+    it "fails if no login is supplied" do
+      expect(klass.login('', password)).to be_false
+    end
+
+    it "fails if no password is supplied" do
+      expect(klass.login(login, '')).to be_false
+    end
+  end
+end
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spec/lib/gitlab/ldap/config_spec.rb

+require 'spec_helper'
+
+describe Gitlab::LDAP::Config do
+  let(:config) { Gitlab::LDAP::Config.new provider }
+  let(:provider) { 'ldapmain' }
+
+  describe :initalize do
+    it 'requires a provider' do
+      expect{ Gitlab::LDAP::Config.new }.to raise_error ArgumentError
+    end
+
+    it "works" do
+      expect(config).to be_a described_class
+    end
+
+    it "raises an error if a unknow provider is used" do
+      expect{ Gitlab::LDAP::Config.new 'unknown' }.to raise_error
+    end
+  end
+end
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