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Commit fcf5acd6 authored by Eugene Susla's avatar Eugene Susla
Browse files

Include magnification state graph in unit test javadoc 

The graph seems helpful for understaning magnification states.

Test: render graph with `dot`, ensure it looks ok
Change-Id: I40c5ab36ca9123b1a85c63ba2208532b6c97a997
parent dd312aba

services/tests/servicestests/src/com/android/server/accessibility/MagnificationGestureHandlerTest.java

+28 −0
Original line number Diff line number Diff line
@@ -48,6 +48,34 @@ import org.junit.runner.RunWith; 
import java.util.function.IntConsumer;





/**

 * Tests the state transitions of {@link MagnificationGestureHandler}

 *

 * Here's a dot graph describing the transitions being tested:

 * {@code

 *      digraph {

 *          IDLE -> SHORTCUT_TRIGGERED [label="a11y\nbtn"]

 *          SHORTCUT_TRIGGERED -> IDLE [label="a11y\nbtn"]

 *          IDLE -> DOUBLE_TAP [label="2tap"]

 *          DOUBLE_TAP -> IDLE [label="timeout"]

 *          DOUBLE_TAP -> TRIPLE_TAP_AND_HOLD [label="down"]

 *          SHORTCUT_TRIGGERED -> TRIPLE_TAP_AND_HOLD [label="down"]

 *          TRIPLE_TAP_AND_HOLD -> ZOOMED [label="up"]

 *          TRIPLE_TAP_AND_HOLD -> DRAGGING_TMP [label="hold/\nswipe"]

 *          DRAGGING_TMP -> IDLE [label="release"]

 *          ZOOMED -> ZOOMED_DOUBLE_TAP [label="2tap"]

 *          ZOOMED_DOUBLE_TAP -> ZOOMED [label="timeout"]

 *          ZOOMED_DOUBLE_TAP -> DRAGGING [label="hold"]

 *          ZOOMED_DOUBLE_TAP -> IDLE [label="tap"]

 *          DRAGGING -> ZOOMED [label="release"]

 *          ZOOMED -> IDLE [label="a11y\nbtn"]

 *          ZOOMED -> PANNING [label="2hold"]

 *          PANNING -> PANNING_SCALING [label="pinch"]

 *          PANNING_SCALING -> ZOOMED [label="release"]

 *          PANNING -> ZOOMED [label="release"]

 *      }

 * }

 */

@RunWith(AndroidJUnit4.class)

public class MagnificationGestureHandlerTest {