40

I am trying to get to grips with BDD web development in Ruby using cucumber + capybara and I am stuck at what should be an easy task - just to check the number of rows in a table. The intention of what I'm trying to achieve is something along the lines of:

page.should have_xpath("//table[@id='myTable']")
find("//table[@id='myTable']/tr").length.should == 3

But this doesn't work (missing method length) and I can't find a way to assert against the table length.

Any ideas anyone (please be easy on me tho' I'm a ruby nooby)

Thanks in advance

Neil

4

6 に答える 6

61

Even though have_css? will do the trick, your tests should tell you how they failed, rather than just saying some condition was supposed to be true and it was false. With this in mind, the first example below reads much better than the second:

# IF FAILED => "expected 10, got 7"
page.all('table#myTable tr').count.should == 10

# IF FAILED => "expected true, got false"
page.should have_css("table#myTable tr", :count=>10)
于 2012-03-16T03:11:44.213 に答える
20

I think you can do this:

page.should have_css("table#mytable tr", :count=>3)
于 2010-06-30T22:29:22.187 に答える
13

For some reason "has_css" does not work for me, however "all(selector)" works really wel

all("table#movies tr").count
于 2012-03-14T22:35:22.173 に答える
3

I went with this in the end:

Then /^I should see "(.*)" once$/ do |text|
    within_table('myTable') do
      should have_xpath("//tr", :text => text, :count => 1)
    end
end

which seemed suitably elegant.

I realise the other answers work but this seems to read well.

Any comments?

于 2010-07-12T22:57:58.297 に答える
1

The method #find only returns one element (I think it just returns the first one if there are several matches) so you don't get a #length method because the result of #find is a Node not an Array.

To prove this to yourself, try

puts find("//table[@id='myTable']/tr").class

What you want is #all, which will return you an Array of all the matching nodes.

于 2010-07-12T20:24:37.420 に答える
1

In this way you can learn the number of lines in the html table.

area = find_by_id('#areaID').all('tr').size

Assume that there are columns at the beginning of the table.You can reach the actual number in this way.

area = area-1
于 2017-11-03T14:50:15.077 に答える