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Figure 12-13. The Code Coverage Results window Earlier in the chapter, we mentioned that having test results without knowing how much code was exercised (that is, how much code actually ran) is useless. For example, with the ValidateUser method, you might assume, based on the test results, that this method works

</td> </tr> </table> </div> </form> </body> </html> There is no special coding in the design code in Listing 16-17. Notice the use of standard HTML table tags. Later in this chapter, you will see Table control, which is a lot different coding-wise but similar functionality-wise. Listing 16-17. The Code-Behind Buttons.aspx.h #pragma once using namespace System; using namespace System::Web::UI; using namespace System::Web::UI::WebControls; namespace WebControl { public ref class Buttons : public System::Web::UI::Page { protected: // Row 1 Column 1 -- Controls RadioButton^ rbColorful; RadioButton^ rbHappy; RadioButton^ rbChange; // Row 1 Column 2 -- Controls CheckBox^ cbColorful; CheckBox^ cbHappy; CheckBox^ cbChange; Button^ bnCheckBoxes; // Row 2 Column 1 -- Controls Button^ bnColorful; ImageButton^ ibnHappy; Button^ bnChange; // Row 2 Column 2 -- Control LinkButton^ lbnChange; void void void void void void }; } RB_CheckedChanged(Object ^sender, EventArgs ^e); bnCheckBoxes_Click(Object ^sender, EventArgs ^e); bnColorful_Click(Object ^sender, EventArgs ^e); ibnHappy_Click(Object ^sender, ImageClickEventArgs ^e); bnChange_Click(Object ^sender, EventArgs ^e); lbnChange_Click(Object ^sender, EventArgs ^e);

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Listing 16-18. The Code-Behind Buttons.aspx.cpp #include "StdAfx.h" #include "Buttons.aspx.h" namespace WebControl { void Buttons::RB_CheckedChanged(Object ^sender, EventArgs ^e) { if (rbColorful->Checked) Response->Redirect("Colorful.aspx"); else if (rbHappy->Checked) Response->Redirect("Happy.aspx"); else if (rbChange->Checked) Response->Redirect("ChangeColor.aspx"); } void Buttons::bnCheckBoxes_Click(Object ^sender, EventArgs ^e) { if (cbColorful->Checked) Response->Redirect("Colorful.aspx"); else if (cbHappy->Checked) Response->Redirect("Happy.aspx"); else if (cbChange->Checked) Response->Redirect("ChangeColor.aspx"); } void Buttons::bnColorful_Click(Object ^sender, EventArgs ^e) { Response->Redirect("Colorful.aspx"); } void Buttons::ibnHappy_Click(Object ^sender, ImageClickEventArgs ^e) { Response->Redirect("Happy.aspx"); } void Buttons::bnChange_Click(Object ^sender, EventArgs ^e) { Response->Redirect("ChangeColor.aspx"); } void Buttons::lbnChange_Click(Object ^sender, EventArgs ^e) { Response->Redirect("ChangeColor.aspx"); } }

fine and that there is nothing more to test. But looking at the code coverage, you can see that this is not true at all. Table 12-4 contains a complete list of the code coverage statistics for the ValidateUser method. Table 12-4. Code Coverage Statistics for the ValidateUser Method

- (void)deselectAllToolButtons { [textButton setImage:[UIImage imageNamed:@"button_text.png"]]; [freehandButton setImage:[UIImage imageNamed:@"button_bezier.png"]]; [ellipseButton setImage:[UIImage imageNamed:@"button_ellipse.png"]]; [rectangleButton setImage:[UIImage imageNamed:@"button_rectangle.png"]]; [lineButton setImage:[UIImage imageNamed:@"button_line.png"]]; [dotButton setImage:[UIImage imageNamed:@"button_dot.png"]]; }

The Buttons code-behind has a few things worth noting The first is how you can have multiple events handled by the same event handler (In general, using a single event handler to handle multiple events is not a good coding practice) In the preceding example, you see this done with the RadioButton control s CheckedChanged events (which, incidentally, you also set for AutoPostBack in each RadioButton): void Buttons::RB_CheckedChanged(Object ^sender, EventArgs ^e) { if (rbColorful->Checked) Response->Redirect("Colorfulaspx"); else if (rbHappy->Checked) Response->Redirect("Happyaspx"); else if (rbChange->Checked) Response->Redirect("ChangeColoraspx"); } You might also note that only the handler for the control that actually gets clicked is triggered even though the name of the event seems to imply that both the radio button that was checked and the radio button that became unchecked should also be triggered (as it changed also).

Not Covered (Blocks) Not Covered (% Blocks) Covered (Blocks) Covered (% Blocks) Not Covered (Lines) Not Covered (% Lines) Covered (Lines) Covered (% Lines) Partially Covered (Lines) Partially Covered (% Lines)

Because of this, it would also have been possible to code this example by checking which control sent the event and then processing for that event This makes the checked property unneeded: void Buttons::RB_CheckedChanged(Object ^sender, EventArgs ^e) { if (sender == rbColorful) Response->Redirect("Colorfulaspx"); else if (sender == rbHappy) Response->Redirect("Happyaspx"); else if (sender == rbChange) Response->Redirect("ChangeColoraspx"); } Another thing that might cause you a few minutes of research (and, after reading this, this should not be the case) is that ImageButtons differ from all the other button Click events in that they use a different event handler They use ImageClickEventHandler instead of the more standard EventHandler: void Buttons::ibnHappy_Click(Object ^sender, ImageClickEventArgs ^e) Probably the most important thing shown in the preceding example is how to programmatically jump to a new Web page using the Redirect() method in the Response property of the Page class: Response->Redirect("Colorful.

aspx"); The preceding example shows how to jump to a local Web Form To jump to a Web Form on a different server, you need to use the full URL, starting with http://: Response->Redirect("http://wwwprocppclinet/defaultaspx"); Figure 16-8 shows an assortment of buttons from which you can select the previous examples..

Finally, implement the method that the new button will call:

3 14.29% 18 85.71% 2 11.76% 14 82.35% 1 5.88%

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