Databases
StackOverflow2013
Postsdbo
POAcceptance testing a legacy code
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POAcceptance testing a legacy code
    primarykey
    data
    text
    <p>I'm following a course in agile practices and I have a homework. During the course, I've been taught on how to use FIT for automated acceptance tests. From what I can see, FIT seems to be dying and I'm no longer sure that it is the technology I want to use for my homework. Anyway...</p> <p>I have legacy system to test and everything is badly designed/coded. Of course there are no tests, and I'm not allowed to refactor or change functionality before writing any acceptance test.</p> <p>For the sake of simplicity, let's say the system is a shop receipt system that prints the products list (with prices) and the total cost to the standard output stream. Something like this:</p> <pre><code>public class ReceiptSystem { List&lt;Product&gt; boughtProducts = new ArrayList&lt;Product&gt;(); public void buyProduct(Product p) { boughtProducts.add(p); } public void printReceipt() { List&lt;ReceiptLine&gt; receipt = new ArrayList&lt;ReceiptLine&gt;(); int total = 0; int price; for(List&lt;Product&gt; boughtProducts : boughtProduct) { price = SomeThirdPartyClass.calculatePrice(boughtProduct.getBarcode()); System.out.println(boughtProduct + ": " + price); total += price; } System.out.println("TOTAL: " + total); } } </code></pre> <p>The problem is that the prices are calculated by a third party system with an external library, so I don't know them and I find it difficult (if not impossible) to write the acceptance test using FIT. In a normal case I would do something like:</p> <p>Shopping list (input):</p> <pre><code> ------------------- | product's barcode | ------------------- | 111111111 | ------------------- | 123456789 | ------------------- | 987654321 | ------------------- | 999999999 | ------------------- </code></pre> <p>Receipt (expected output):</p> <pre><code> ------------------ | receipt | ------------------ | 111111111: 1.99 | ------------------ | 123456789: 2.99 | ------------------ | 987654321: 3.99 | ------------------ | 999999999: 4.99 | ------------------ | TOTAL: 13.96 | ------------------ </code></pre> <p>But how can I achieve this without knowing the prices? What's the best strategy to adopt? Is there any other framework to achieve this?</p> <p>Thank you.</p> <p><strong>Update:</strong> The <code>SomeThirdPartyClass</code> is <code>final</code>, trying to mock it or to write a Proxy class for it will give the following error:</p> <blockquote> <p>Cannot subclass final class class SomeThirdPartyClass</p> </blockquote> <p>Furthermore, it's immutable and the public constructor has no arguments. Seems like the teacher made it on purpose....</p>
    singulars
    1. PO
      singulars
      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USsatoshi
    1. USsatoshi
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POAcceptance testing a legacy code
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. POAcceptance testing a legacy code
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload