Setup user login/logout (#21)

Reviewed-on: #21

test/system/sessions_test.rb

@@ -0,0 +1,25 @@
+require "application_system_test_case"
+
+class SessionsTest < ApplicationSystemTestCase
+  setup do
+    @user = users(:one)
+  end
+
+  test "should create session" do
+    visit new_session_url
+
+    fill_in "Email", with: @user.email
+    fill_in "Password", with: "secret"
+
+    click_on "Create Session"
+
+    assert_text "Session was successfully created"
+  end
+
+  test "should destroy Session" do
+    visit root_url
+    click_on "Log out", match: :first
+
+    assert_text "Session was successfully destroyed"
+  end
+end