Internet Explorer Does not Display PDF Files in Some Cases Even if Adobe Reader is Present
In this example we are going to perform Scenario Testing on Internet Explorer. The real world situation that we are going to use is a user trying to view a PDF file on the Internet. In order to display the file Internet Explorer has to interact with Adobe Reader 6.0, which is a PDF file viewer. If an Internet Explorer user tries to open a PDF file that contains an apostrophe in the filename, the document will not be displayed. (Source: www.adobeforums.com).
Adobe Reader 6.0 is free software that lets you view and print Adobe Portable Document Format (PDF) files on a variety of hardware and operating system platforms. (Source: www.adobe.com).
Internet Explorer 6.0 is a web browser that can be used to view HTML documents. It can also display PDF files posted on the Internet by starting Adobe Reader and displaying the PDF inside the browser like in the picture below.
This example demonstrates the use of Scenario Testing. To perform this type of testing we have to imagine a real world situation, which involves a complex use of Internet Explorer.
Let's imagine that there is someone named John who is trying to create his own web page. He has his resume in PDF format and he is going to link to the file (John's_CV.pdf) from his web page.
He would expect that visitors to his page will be able to click on the link to his resume and be able to read it.
Performing the Test
Surprisingly, Internet Explorer shows the correct address in the address bar but no information is displayed. In addition, right clicking doesn't work and View -> Source function is disabled.
After selecting View -> Refresh, the function View -> source gets enabled. Clicking on it shows that even though the address bar shows John's_CV.pdf, the src tag points to John (which is not an existing file) instead of John's_CV.pdf. It appears that the apostrophe has worked as a terminator character for Internet Explorer.
This is an example that is very likely to happen in the real world, and it would be hard for the average user to figure out that the problem is in the apostrophe.
Similar Tests/Additional Notes
After loading the same page and clicking on the link, Mozilla displays the PDF file without any problem.
Testing Microsoft's Internet Explorer v 6.0 on: