メンター・アドバイザー・管理者はダッシュボードの学習時間の草を非表示にする

app/views/home/index.html.slim

@@ -62,7 +62,7 @@ header.page-header
                     | 内容を更新
           - if (current_user.admin? || current_user.adviser?) && @job_seeking_users.present?
             = render 'job_seeking_users', users: @job_seeking_users
-          - if current_user.total_learning_time.positive? || !current_user.mentor?
+          - if current_user.student_or_trainee?
             #js-grass(data-user-id="#{current_user.id}")
           - if current_user.github_account.present?
             = render 'users/github_grass', user: current_user

test/system/home_test.rb

@@ -88,9 +88,37 @@ class HomeTest < ApplicationSystemTestCase
     assert_current_path(/niconico_calendar=#{1.month.ago.strftime('%Y-%m')}/)
   end
 
-  test 'show the grass' do
-    visit_with_auth '/', 'hajime'
-    assert_text '学習時間'
+  test 'show the grass for student' do
+    assert users(:kimura).student?
+    visit_with_auth '/', 'kimura'
+    assert_selector 'h2.card-header__title', text: '学習時間'
+  end
+
+  test 'show the grass for trainee' do
+    assert users(:kensyu).trainee?
+    visit_with_auth '/', 'kensyu'
+    assert_selector 'h2.card-header__title', text: '学習時間'
+  end
+
+  test 'not show the grass for mentor' do
+    assert users(:mentormentaro).mentor?
+    visit_with_auth '/', 'mentormentaro'
+    assert_selector 'h2.page-header__title', text: 'ダッシュボード'
+    assert_no_selector 'h2.card-header__title', text: '学習時間'
+  end
+
+  test 'not show the grass for adviser' do
+    assert users(:advijirou).adviser?
+    visit_with_auth '/', 'advijirou'
+    assert_selector 'h2.page-header__title', text: 'ダッシュボード'
+    assert_no_selector 'h2.card-header__title', text: '学習時間'
+  end
+
+  test 'not show the grass for admin' do
+    assert users(:komagata).admin?
+    visit_with_auth '/', 'komagata'
+    assert_selector 'h2.page-header__title', text: 'ダッシュボード'
+    assert_no_selector 'h2.card-header__title', text: '学習時間'
   end
 
   test 'show test events on dashboard' do