Add initial model tests with starter fixtures for User, Family, and Account (#281)

* Add initial user fixture

* Add initial tests for  the User model

* Add initial tests for Family and a valid Account

* Pass rubocop

test/models/account_test.rb

@@ -1,7 +1,11 @@
 require "test_helper"
 
 class AccountTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  test "new account should be valid" do
+    depository = Account::Depository.create!
+    account = Account.create!(family: families(:dylan_family), name: "Explicit Checking", balance: 1200, accountable: depository)
+    assert account.valid?
+    assert_not_nil account.accountable_id
+    assert_not_nil account.accountable
+  end
 end

test/models/family_test.rb

@@ -1,7 +1,28 @@
 require "test_helper"
 
 class FamilyTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  def setup
+    @dylan_family = families(:dylan_family)
+  end
+
+  test "should have many users" do
+    assert_equal 2, @dylan_family.users.size
+    assert @dylan_family.users.include?(users(:bob))
+  end
+
+  test "should have many accounts" do
+    assert_equal 2, @dylan_family.accounts.size
+  end
+
+  test "should destroy dependent users" do
+    assert_difference("User.count", -@dylan_family.users.count) do
+      @dylan_family.destroy
+    end
+  end
+
+  test "should destroy dependent accounts" do
+    assert_difference("Account.count", -@dylan_family.accounts.count) do
+      @dylan_family.destroy
+    end
+  end
 end

test/models/user_test.rb

@@ -1,7 +1,46 @@
 require "test_helper"
 
 class UserTest < ActiveSupport::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
+  def setup
+    @user = users(:bob)
+  end
+
+  test "should be valid" do
+    assert @user.valid?, @user.errors.full_messages.to_sentence
+  end
+
+  # email
+  test "email must be present" do
+    potential_user = User.new(
+      email: "david@davidbowie.com",
+      password_digest: BCrypt::Password.create("password"),
+      first_name: "David",
+      last_name: "Bowie"
+    )
+    potential_user.email = "     "
+    assert_not potential_user.valid?
+  end
+
+  test "has email address" do
+    assert_equal "bob@bobdylan.com", @user.email
+  end
+
+  test "can update email" do
+    @user.update(email: "new_email@example.com")
+    assert_equal "new_email@example.com", @user.email
+  end
+
+  test "email addresses must be unique" do
+    duplicate_user = @user.dup
+    duplicate_user.email = @user.email.upcase
+    @user.save
+    assert_not duplicate_user.valid?
+  end
+
+  test "email addresses are be saved as lower-case" do
+    mixed_case_email = "Foo@ExAMPle.CoM"
+    @user.email = mixed_case_email
+    @user.save
+    assert_equal mixed_case_email.downcase, @user.reload.email
+  end
 end