稍作修改,您的代码就可以工作:
try do
// some page elements action
assert visible_page_text() =~ "Hello World"
catch
error ->
take_screenshot()
raise error
end
或者把它变成一个宏:
# assert screenshot on failure
defmacro assert_sof(assertion) do
quote do
try do
assert unquote(assertion)
rescue
error ->
take_screenshot()
raise error
end
end
end
并这样称呼它:
assert_sof visible_page_text() =~ "Hello World"
更新:正如您所提到的,这只会在进行断言时截取屏幕截图。不过这可以解决。
这是一个宏,它将整个测试的内容包装在 try/rescue 块中,并保存任何错误的屏幕截图。作为奖励,它会在屏幕截图前面加上测试名称。最大的缺点是您丢失了 stracktrace,因此更难查明测试代码的失败行。(用catch
代替解决rescue
)如果您愿意,可以将宏放入support/conn_case.ex
或其他地方:
def MyAppWeb.ConnCase
# ...
# Test and take screenshot on failure. Only works for hound tests.
defmacro test_sof(message, var \\ quote do _ end, contents) do
prefix = String.replace(message, ~r/\W+/, "-")
filename = Hound.Utils.temp_file_path(prefix, "png")
quote do
test unquote(message), unquote(var) do
try do
unquote(contents)
catch
error ->
take_screenshot(unquote(filename))
raise error
end
end
end
end
using do
quote do
# Import conveniences for testing with connections
use Phoenix.ConnTest
import MyAppWeb.ConnCase, only: [test_sof: 2, test_sof: 3] # <- Add this line
# ...
end
end
# ...
end
并将其称为正常测试:
test_sof "form with valid data" do
navigate_to "/form"
click({:id, "test"})
assert visible_page_text() =~ "test successful"
end
现在它应该适用于各种错误。