You can select or check tests using the Test views in Visual Studio. Both selecting and checking apply to individual and multiple tests.
In the Test List Editor, you select a test by clicking its row, or you can check a test by placing a check mark in the box in its row. Similarly, in the Test Results window, you can select a test result, or you can check it. In each case, a check mark indicates run. In the Test List Editor, you check a test in order to run it, and in the Test Results window, you mark the row of a test result in order to rerun the test that produced the result. Checking is a form of persistent selection; an item does not become unchecked unless you explicitly clear it. After you have selected tests, you can run or debug them. For more information, see How to: Run Automated Tests from Microsoft Visual Studio.
This also applies to test lists. Selecting a test list displays the tests it contains in the data pane. Checking it selects its tests for running. See How to: Organize Tests into Test Lists.
By contrast, in the Test View window, there are no check boxes. To run a test, you click its row and then click Run Selection.
In the Test List Editor and in the Test View window, selecting a test displays its properties in the Properties window. In any window, right-clicking displays a shortcut menu of context-specific options.