1 files changed, 21 insertions, 0 deletions
diff --git a/actionpack/test/dispatch/system_testing/system_test_case_test.rb b/actionpack/test/dispatch/system_testing/system_test_case_test.rb
new file mode 100644
index 0000000000..a384902a14
--- /dev/null
+++ b/actionpack/test/dispatch/system_testing/system_test_case_test.rb
@@ -0,0 +1,21 @@
+require "abstract_unit"
+
+class SystemTestCaseTest < ActiveSupport::TestCase
+  test "driven_by sets Capybara's default driver to poltergeist" do
+    ActionDispatch::SystemTestCase.driven_by :poltergeist
+
+    assert_equal :poltergeist, Capybara.default_driver
+  end
+
+  test "driven_by sets Capybara's drivers respectively" do
+    ActionDispatch::SystemTestCase.driven_by :selenium, using: :chrome
+
+    assert_includes Capybara.drivers, :selenium
+    assert_includes Capybara.drivers, :chrome
+    assert_equal :chrome, Capybara.default_driver
+  end
+
+  test "selenium? returns false if driver is poltergeist" do
+    assert_not ActionDispatch::SystemTestCase.selenium?(:poltergeist)
+  end
+end