enhanced Network Graph Caching

1 files changed, 56 insertions, 0 deletions

diff --git a/test/java/net/yacy/peers/graphics/NetworkGraphTest.java b/test/java/net/yacy/peers/graphics/NetworkGraphTest.java
new file mode 100644
index 000000000..ca3d2f24d
--- /dev/null
+++ b/test/java/net/yacy/peers/graphics/NetworkGraphTest.java
@@ -0,0 +1,56 @@
+// NetworkGraphTest.java
+// This is a part of YaCy, a peer-to-peer based web search engine
+
+package net.yacy.peers.graphics;
+
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+/** Unit tests for the network picture cache in {@link NetworkGraph}. */
+public class NetworkGraphTest {
+
+    @Before
+    @After
+    public void clearCache() {
+        NetworkGraph.clearcache();
+    }
+
+    @Test
+    public void testNetworkPictureCacheIsPartitionedByImageSize() {
+        final EncodedImage small = new EncodedImage(new byte[] {1}, "png", false);
+        final EncodedImage large = new EncodedImage(new byte[] {2}, "png", false);
+
+        NetworkGraph.cacheNetworkPicture(825, 450, 0, small);
+        NetworkGraph.cacheNetworkPicture(1280, 900, 0, large);
+
+        assertSame(small, NetworkGraph.getCachedNetworkPicture(825, 450, 0));
+        assertSame(large, NetworkGraph.getCachedNetworkPicture(1280, 900, 0));
+        assertNull(NetworkGraph.getCachedNetworkPicture(825, 900, 0));
+    }
+
+    @Test
+    public void testNetworkPictureCacheIsPartitionedByCoronaAngle() {
+        final EncodedImage firstPhase = new EncodedImage(new byte[] {1}, "png", false);
+        final EncodedImage secondPhase = new EncodedImage(new byte[] {2}, "png", false);
+
+        NetworkGraph.cacheNetworkPicture(1280, 900, 0, firstPhase);
+        NetworkGraph.cacheNetworkPicture(1280, 900, 60, secondPhase);
+
+        assertSame(firstPhase, NetworkGraph.getCachedNetworkPicture(1280, 900, 0));
+        assertSame(secondPhase, NetworkGraph.getCachedNetworkPicture(1280, 900, 60));
+        assertNull(NetworkGraph.getCachedNetworkPicture(1280, 900, 120));
+    }
+
+    @Test
+    public void testExpiredNetworkPictureRemainsAvailableForBusyFallback() {
+        final EncodedImage image = new EncodedImage(new byte[] {1}, "png", false);
+        NetworkGraph.cacheNetworkPicture(825, 450, 0, image);
+
+        assertNull(NetworkGraph.getCachedNetworkPicture(825, 450, 0, 0));
+        assertSame(image, NetworkGraph.getCachedNetworkPicture(825, 450, 0));
+    }
+}