app: harden mirroring lifecycle and state

1 files changed, 48 insertions, 0 deletions

diff --git a/app/src/test/java/invalid/lena/scrcpy/TouchGeometryTest.java b/app/src/test/java/invalid/lena/scrcpy/TouchGeometryTest.java
new file mode 100644
index 0000000..5db6d32
--- /dev/null
+++ b/app/src/test/java/invalid/lena/scrcpy/TouchGeometryTest.java
@@ -0,0 +1,48 @@
+package invalid.lena.scrcpy;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import org.junit.Test;
+
+public class TouchGeometryTest {
+
+    @Test
+    public void viewportBeforeTargetDoesNotEnableInput() {
+        TouchGeometry geometry = new TouchGeometry();
+        geometry.setViewport(0, 0, 0, 1080, 608);
+        assertNull(geometry.snapshot());
+    }
+
+    @Test
+    public void targetResizeInvalidatesViewport() {
+        TouchGeometry geometry = new TouchGeometry();
+        long first = 7;
+        geometry.setTargetSize(first, 1920, 1080);
+        geometry.setViewport(first, 0, 100, 1080, 608);
+
+        long second = 8;
+        geometry.setTargetSize(second, 1080, 1920);
+
+        assertNull(geometry.snapshot());
+        geometry.setViewport(first, 100, 0, 608, 1080);
+        assertNull(geometry.snapshot());
+
+        geometry.setViewport(second, 100, 0, 608, 1080);
+        TouchGeometry.Snapshot snapshot = geometry.snapshot();
+        assertEquals(1080, snapshot.targetW);
+        assertEquals(1920, snapshot.targetH);
+        assertEquals(100, snapshot.x);
+        assertEquals(608, snapshot.w);
+    }
+
+    @Test
+    public void emptyViewportDisablesInput() {
+        TouchGeometry geometry = new TouchGeometry();
+        long version = 1;
+        geometry.setTargetSize(version, 1920, 1080);
+        geometry.setViewport(version, 0, 0, 1080, 608);
+        geometry.setViewport(version, 0, 0, 0, 0);
+        assertNull(geometry.snapshot());
+    }
+}