Add missing tests

lib/black_candy/errors.rb

@@ -5,10 +5,6 @@ class BaseError < StandardError
     def type
       self.class.name.split("::").last
     end
-
-    def message
-      super
-    end
   end
 
   class Forbidden < BaseError

test/helpers/application_helper_test.rb

@@ -9,4 +9,12 @@ class ApplicationHelperTest < ActionView::TestCase
     assert_equal "15:00", format_duration(900)
     assert_equal "02:30:00", format_duration(9000)
   end
+
+  test "empty alert tag" do
+    assert_includes empty_alert_tag, "No items"
+    assert_includes empty_alert_tag, "c-overlay"
+    assert_not_includes empty_alert_tag, "c-icon"
+    assert_includes empty_alert_tag(has_icon: true), "c-icon"
+    assert_not_includes empty_alert_tag(has_overlay: false), "c-overlay"
+  end
 end

test/lib/black_candy/errors_test.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class BlackCandy::ErrorsTest < ActiveSupport::TestCase
+  test "should get info from forbidden error" do
+    error = BlackCandy::Forbidden.new
+
+    assert_equal "Forbidden", error.type
+    assert_not_empty error.message
+  end
+
+  test "should get info from invalid credential error" do
+    error = BlackCandy::InvalidCredential.new
+
+    assert_equal "InvalidCredential", error.type
+    assert_not_empty error.message
+  end
+
+  test "should get info from duplicate playlist song error" do
+    error = BlackCandy::DuplicatePlaylistSong.new
+
+    assert_equal "DuplicatePlaylistSong", error.type
+    assert_not_empty error.message
+  end
+end