Add tests for background_exception_notification method.

Author: smartinez87

test/background_exception_notification_test.rb

@@ -0,0 +1,54 @@
+require 'test_helper'
+
+class BackgroundExceptionNotificationTest < ActiveSupport::TestCase
+  setup do
+    begin
+      1/0
+    rescue => e
+      @exception = e
+      @mail = ExceptionNotifier::Notifier.background_exception_notification(@exception)
+    end
+  end
+
+  test "should have raised an exception" do
+    assert_not_nil @exception
+  end
+
+  test "should have generated a notification email" do
+    assert_not_nil @mail
+  end
+
+  test "mail should have a from address set" do
+    assert @mail.from == ["[email protected]"]
+  end
+
+  test "mail should have a to address set" do
+    assert @mail.to == ["[email protected]"]
+  end
+
+  test "mail should have a descriptive subject" do
+    assert @mail.subject.include? "[Dummy ERROR]  (ZeroDivisionError) \"divided by 0\""
+  end
+
+  test "mail should contain backtrace in body" do
+    assert @mail.body.include? "test/background_exception_notification_test.rb:6"
+  end
+
+  test "mail should not contain any attachments" do
+    assert @mail.attachments == []
+  end
+
+  test "should not send notification if one of ignored exceptions" do
+    begin
+      raise ActiveRecord::RecordNotFound
+    rescue => e
+      @ignored_exception = e
+      unless ExceptionNotifier.default_ignore_exceptions.include?(@ignored_exception.class)
+        @ignored_mail = ExceptionNotifier::Notifier.background_exception_notification(@exception)
+      end
+    end
+
+    assert @ignored_exception.class.inspect == "ActiveRecord::RecordNotFound"
+    assert_nil @ignored_mail
+  end
+end