WatiN can't find text after searching google

问题:

I'm trying to run a simple watiN example: search google then verify the search result. (on IE9)

var browser = new IE("http://www.google.com/ncr");

browser.TextField(Find.ByName("q")).TypeText("WatiN");
browser.Button(Find.ByName("btnG")).Click();

Assert.True(browser.ContainsText("WatiN"));

This test fails! I don't know why, but adding a call to WaitUntilContainsText("Everything") make this pass:

var browser = new IE("http://www.google.com/ncr");

browser.TextField(Find.ByName("q")).TypeText("WatiN");
browser.WaitUntilContainsText("Everything");// because of google instant??
browser.Button(Find.ByName("btnG")).Click();

Assert.True(browser.ContainsText("WatiN"));

I guess this maybe because of the behavior of google instant but can't be sure. Can someone explain what's wrong with this test?

回答1:

Yes, it has to do with Google Instant. When you call Click() on button the page will not be reloaded, so the call to ContainsText will occur almost without delay. You need to use some Wait... methods of the IE or elements if you are browsing pages generated by javascript on the fly (AJAX mostly).