diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index 8f7980ff19..9cc336c995 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -3,7 +3,7 @@ class UserMailer < ApplicationMailer
   def definicao_senha(user)
     @user = user
     @url  = "http://localhost:3000/definicao_senha"
-    mail(to: @user.email, subject: "Definição de Senha - Sistema de Gestão")
+    mail(to: @user.email_address, subject: "Definição de Senha - Sistema de Gestão")
   end
 
   # Email de cadastro com senha temporária (novo método)
diff --git a/spec/mailers/user_mailer_spec.rb b/spec/mailers/user_mailer_spec.rb
new file mode 100644
index 0000000000..035a442a92
--- /dev/null
+++ b/spec/mailers/user_mailer_spec.rb
@@ -0,0 +1,38 @@
+require 'rails_helper'
+
+RSpec.describe UserMailer, type: :mailer do
+  describe 'definicao_senha' do
+    let(:user) do
+      User.create(nome: 'Teste', email_address: 'teste@example.com', matricula: '111', password: 'password')
+    end
+    let(:mail) { UserMailer.definicao_senha(user) }
+
+
+
+    it 'renders the headers' do
+      expect(mail.subject).to eq('Definição de Senha - Sistema de Gestão')
+      expect(mail.to).to eq([ user.email_address ])
+    end
+
+    it 'renders the body' do
+      expect(mail.body.encoded).to match('Definição de Senha')
+    end
+  end
+
+  describe 'cadastro_email' do
+    let(:user) do
+      User.create(nome: 'Teste', email_address: 'teste@example.com', matricula: '222', password: 'password')
+    end
+    let(:password) { 'secret123' }
+    let(:mail) { UserMailer.cadastro_email(user, password) }
+
+    it 'renders the headers' do
+      expect(mail.subject).to eq('Bem-vindo(a) ao CAMAAR - Sua senha de acesso')
+      expect(mail.to).to eq([ user.email_address ])
+    end
+
+    it 'renders the body with password' do
+      expect(mail.body.encoded).to match(password)
+    end
+  end
+end
diff --git a/spec/models/matricula_turma_spec.rb b/spec/models/matricula_turma_spec.rb
new file mode 100644
index 0000000000..a50a3f4b36
--- /dev/null
+++ b/spec/models/matricula_turma_spec.rb
@@ -0,0 +1,15 @@
+require 'rails_helper'
+
+RSpec.describe MatriculaTurma, type: :model do
+  describe 'associations' do
+    it 'belongs to user' do
+      association = described_class.reflect_on_association(:user)
+      expect(association.macro).to eq :belongs_to
+    end
+
+    it 'belongs to turma' do
+      association = described_class.reflect_on_association(:turma)
+      expect(association.macro).to eq :belongs_to
+    end
+  end
+end
diff --git a/spec/models/turma_spec.rb b/spec/models/turma_spec.rb
new file mode 100644
index 0000000000..795409feb0
--- /dev/null
+++ b/spec/models/turma_spec.rb
@@ -0,0 +1,16 @@
+require 'rails_helper'
+
+RSpec.describe Turma, type: :model do
+  describe 'associations' do
+    it 'has many matricula_turmas' do
+      association = described_class.reflect_on_association(:matricula_turmas)
+      expect(association.macro).to eq :has_many
+    end
+
+    it 'has many users through matricula_turmas' do
+      association = described_class.reflect_on_association(:users)
+      expect(association.macro).to eq :has_many
+      expect(association.options[:through]).to eq :matricula_turmas
+    end
+  end
+end
diff --git a/spec/models/user_spec.rb b/spec/models/user_spec.rb
new file mode 100644
index 0000000000..fa7e3478e9
--- /dev/null
+++ b/spec/models/user_spec.rb
@@ -0,0 +1,20 @@
+require 'rails_helper'
+
+RSpec.describe User, type: :model do
+  describe 'associations' do
+    it 'has many matricula_turmas' do
+      association = described_class.reflect_on_association(:matricula_turmas)
+      expect(association.macro).to eq :has_many
+    end
+
+    it 'has many turmas through matricula_turmas' do
+      association = described_class.reflect_on_association(:turmas)
+      expect(association.macro).to eq :has_many
+      expect(association.options[:through]).to eq :matricula_turmas
+    end
+  end
+
+  describe 'validations' do
+    # Adicione validações aqui se houver
+  end
+end
diff --git a/spec/services/sigaa_import_service_spec.rb b/spec/services/sigaa_import_service_spec.rb
new file mode 100644
index 0000000000..483dc642f7
--- /dev/null
+++ b/spec/services/sigaa_import_service_spec.rb
@@ -0,0 +1,96 @@
+require 'rails_helper'
+require 'rspec/support/differ'
+require 'rspec/support/hunk_generator'
+require 'diff/lcs'
+
+RSpec.describe SigaaImportService, type: :service do
+  let(:json_path) { Rails.root.join('spec/fixtures/turmas.json') }
+  let(:csv_path) { Rails.root.join('spec/fixtures/turmas.csv') }
+  let(:invalid_path) { Rails.root.join('spec/fixtures/invalid.txt') }
+
+  before do
+    # Garante que fixtures existem ou são mockados
+    allow(File).to receive(:exist?).and_return(true)
+    allow(File).to receive(:read).with(json_path).and_return([
+      {
+        'code' => 'T01',
+        'semester' => '2024.1',
+        'dicente' => [
+          {
+            'matricula' => '123456',
+            'nome' => 'João Silva',
+            'email' => 'joao@example.com'
+          }
+        ],
+        'docente' => {
+          'usuario' => '654321',
+          'nome' => 'Maria Professora',
+          'email' => 'maria@prof.com'
+        }
+      }
+    ].to_json)
+
+    allow(CSV).to receive(:foreach).with(csv_path, headers: true, col_sep: ',').and_yield(
+      CSV::Row.new(%w[codigo_turma nome_turma semestre nome_usuario email matricula papel],
+                   [ 'T02', 'Banco de Dados', '2024.1', 'Maria Souza', 'maria@example.com', '654321', 'professor' ])
+    )
+
+    allow(File).to receive(:extname).and_call_original
+    allow(File).to receive(:extname).with(json_path).and_return('.json')
+    allow(File).to receive(:extname).with(csv_path).and_return('.csv')
+    allow(File).to receive(:extname).with(invalid_path).and_return('.txt')
+  end
+
+  class DummyMessage
+    def deliver_now
+      true
+    end
+  end
+
+  class DummyMailer
+    def self.cadastro_email(user, password)
+      DummyMessage.new
+    end
+  end
+
+  describe '#process' do
+    context 'with JSON file' do
+      it 'creates turmas and users' do
+        Turma.delete_all
+        User.delete_all
+
+        service = SigaaImportService.new(json_path)
+        result = service.process
+        puts "JSON Import Errors: #{result[:errors]}" if result[:errors].any?
+
+        expect(Turma.count).to eq(1)
+        expect(User.count).to eq(2)
+      end
+    end
+
+    context 'with CSV file' do
+      it 'creates turmas and users' do
+        Turma.delete_all
+        User.delete_all
+
+        service = SigaaImportService.new(csv_path)
+        result = service.process
+        puts "CSV Import Errors: #{result[:errors]}" if result[:errors].any?
+
+        expect(Turma.count).to eq(1)
+        expect(User.count).to eq(1)
+      end
+    end
+
+    context 'with unsupported file format' do
+      it 'returns error' do
+        service = SigaaImportService.new(invalid_path)
+        result = service.process
+        # Manual check to avoid RSpec HunkGenerator error
+        unless result[:errors].join(', ').include?('Formato de arquivo não suportado')
+          raise "Expected error 'Formato de arquivo não suportado' not found in: #{result[:errors]}"
+        end
+      end
+    end
+  end
+end