Minitest/Capibara:切换到JS驱动程序时，绿色测试变为红色

Minitest/Capybara: Green test turns red when switching to JS driver

本文关键字：测试 红色 驱动程序 Capibara JS Minitest      更新时间：2023-09-26

我有一个绿色测试：

test "study page & question screen" do
    assert_title "Study | Word Up"
    assert page.has_selector?('h3', text: "STUDY"), "Panel title missing or wrong"
    assert page.has_selector?("div.progress-bar"), "Progress bar missing or with wrong class"
end

16:24:23 - INFO - Running: test/integration/study/study_test.rb
Started
StudyTest
test_answer_screen                                              PASS (0.98s)
test_study_page_&_question_screen                               PASS (0.27s)
Finished in 1.26314s
2 tests, 2 assertions, 0 failures, 0 errors, 0 skips

因为我在同一页面上有很多（页面上的）Javascript代码，我也想测试它们。因此，我告诉Capybara使用能够使用Javascript的驱动程序。例如webkit，但我也尝试过poltergeist和selenium。

test "study page & question screen" do
    Capybara.javascript_driver = :webkit
    Capybara.current_driver = Capybara.javascript_driver
    assert_title "Study | Word Up"
    assert page.has_selector?('h3', text: "STUDY"), "Panel title missing or wrong"
    assert page.has_selector?("div.progress-bar"), "Progress bar missing or with wrong class"
end

考试突然变红了。虽然我除了换司机之外什么都没做。

16:28:21 - INFO - Running: test/integration/study/study_test.rb
Started
StudyTest
test_answer_screen                                              PASS (1.12s)
test_study_page_&_question_screen                              ERROR (5.11s)
Capybara::ExpectationNotMet:         Capybara::ExpectationNotMet: expected "" to include "Study | Word Up"

这怎么可能？

经过一些测试，我认为您正在访问设置方法中的根路径。所以你的测试访问了根路径，然后改变了Capybara驱动程序。尝试更改驱动程序，然后访问根路径。

基本上，添加

visit root_path

之后

Capybara.javascript_driver = :webkit
Capybara.current_driver = Capybara.javascript_driver

此操作失败：

setup do
    visit root_path
end
test "study page & question screen" do
    Capybara.javascript_driver = :webkit
    Capybara.current_driver = Capybara.javascript_driver
    assert_title "Study | Word Up"
end

通过：

setup do
end
test "study page & question screen" do
    Capybara.javascript_driver = :webkit
    Capybara.current_driver = Capybara.javascript_driver
    visit root_path
    assert_title "Study | Word Up"
end
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