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| <title>QVTo Test Coverage View</title> |
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| <h1>Operational QVT Code Coverage View</h1> |
| <p> |
| A screenshot of the Operational QVT Code Coverage View is given in the figure below. |
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| <img alt="Operational QVT Code Coverage View" src="../images/qvto-test-coverage-view.png"> |
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| The view is created and gains focus once execution of a JUnit test suite is completed. The left column |
| of the coverage view shows a hierarchical view of transformations that were invoked during the test run, |
| with project on top and the transformation modules and library units within the project underneath, in |
| this case only the <i>Hello World</i> module. The remaining columns show the coverage criteria per QVTo |
| language construct used within the unit. Each cell contains the achieved coverage percentage of the |
| corresponding coverage criteria, as well as the absolute values that were used to calculate it. |
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| The coverage view cells are colored according to the percentage calculated for that criterion; |
| high coverage (green), medium coverage (white) and low coverage (red). The two thressholds required |
| to categorize the coverage value can be configured in the workspace preferences, |
| see <i>Windows->Preferences->Operational QVT Code Coverage</i>. By default, the high coverage thresshold is set to |
| 90%, the low coverage thresshold is set to 30%. |
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| Easy navigation to the transformation module or library unit is offered by double clicking on it when |
| listed in the view. The module or libary is opened in the associated editor. An example is shown |
| in the figure below. |
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| <img alt="QVTo Editor annottated with coverage data" src="../images/annotated-editor.png"> |
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| <h2>Clear coverage data</h2> |
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| The toolbar of the Operational QVT Code Coverage View contains a button to clear the coverage data collected |
| during previous runs. By pressing the button, the view as well as the markers that were set on instrumented |
| transformation modules are cleared. |
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