Require authentication for most endpoints (#29)

Reviewed-on: #29

test/system/users_test.rb

@@ -6,13 +6,14 @@ class UsersTest < ApplicationSystemTestCase
   end
 
   test "visiting the index" do
+    login(@user.email)
     visit users_url
     assert_selector "h1", text: "Users"
   end
 
   test "should create user" do
     visit users_url
-    click_on "New user"
+    click_on "Sign up"
 
     fill_in "Email", with: "userthree@example.local"
     fill_in "Password", with: "secret"
@@ -24,6 +25,7 @@ class UsersTest < ApplicationSystemTestCase
   end
 
   test "should update User" do
+    login(@user.email)
     visit user_url(@user)
     click_on "Edit this user", match: :first
 
@@ -37,7 +39,8 @@ class UsersTest < ApplicationSystemTestCase
   end
 
   test "should destroy User" do
-    visit user_url(@user)
+    login(@user.email)
+    visit user_url(users(:two))
     click_on "Destroy this user", match: :first
 
     assert_text "User was successfully destroyed"