1 files changed, 114 insertions, 0 deletions
diff --git a/src/test/java/org/HdrHistogram/HistogramSketchTest.java b/src/test/java/org/HdrHistogram/HistogramSketchTest.java
new file mode 100644
index 0000000..52f48bc
--- /dev/null
+++ b/src/test/java/org/HdrHistogram/HistogramSketchTest.java
@@ -0,0 +1,114 @@
+package org.HdrHistogram;
+
+import org.junit.Test;
+
+import java.nio.ByteBuffer;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class HistogramSketchTest {
+    String line = "###################";
+
+    @Test
+    public void testArrayHistogram() {
+        ArrayHistogram histogram = new ArrayHistogram(1);
+        System.out.println(histogram.describe());
+        for (int i = 0; i < 10000; i++) {
+            histogram.recordValue(i);
+        }
+        System.out.println(histogram.describe());
+        for (Percentile percentile : histogram.percentileList(5)) {
+            System.out.println(percentile);
+        }
+        System.out.println(line);
+        histogram = new ArrayHistogram(1);
+        for (int i = 0; i < 10000; i++) {
+            histogram.recordValue(ThreadLocalRandom.current().nextLong(100000));
+        }
+        System.out.println(histogram.describe());
+        for (Percentile percentile : histogram.percentileList(5)) {
+            System.out.println(percentile);
+        }
+    }
+
+    @Test
+    public void testDirectArrayHistogram() {
+        ByteBuffer byteBuffer = ByteBuffer.allocate(DirectArrayHistogram.getUpdatableSerializationBytes(1, 100000, 1));
+        DirectArrayHistogram histogram = new DirectArrayHistogram(1, 100000, 1,
+                byteBuffer);
+        System.out.println(histogram.describe());
+        for (int i = 0; i < 10000; i++) {
+            histogram.recordValue(i);
+        }
+        System.out.println(histogram.describe());
+        for (Percentile percentile : histogram.percentileList(5)) {
+            System.out.println(percentile);
+        }
+        System.out.println(line);
+        histogram.resetByteBuffer(ByteBuffer.allocate(DirectArrayHistogram.getUpdatableSerializationBytes(1, 100000, 1)));
+        histogram.reset();
+        for (int i = 0; i < 10000; i++) {
+            histogram.recordValue(ThreadLocalRandom.current().nextLong(100000));
+        }
+        System.out.println(histogram.describe());
+        for (Percentile percentile : histogram.percentileList(5)) {
+            System.out.println(percentile);
+        }
+    }
+
+    @Test
+    public void testCopy() {
+        ArrayHistogram histogram1 = new ArrayHistogram(1);
+        ByteBuffer byteBuffer = ByteBuffer.allocate(DirectArrayHistogram.getUpdatableSerializationBytes(1, 100000, 1));
+        DirectArrayHistogram histogram2 = new DirectArrayHistogram(1, 100000, 1,
+                byteBuffer);
+        for (int i = 0; i < 10000; i++) {
+            histogram1.recordValue(i);
+            histogram2.recordValue(i);
+        }
+
+        ArrayHistogram copy1 = histogram1.copy();
+        ArrayHistogram copy2 = histogram2.copy();
+
+        System.out.println(histogram1.describe());
+        System.out.println(histogram2.describe());
+        System.out.println(line);
+
+        System.out.println(copy1.describe());
+        System.out.println(copy2.describe());
+    }
+
+    @Test
+    public void testArrayHistogramMerge() {
+        ArrayHistogram histogram1 = new ArrayHistogram(1);
+        for (int i = 0; i < 1000; i++) {
+            histogram1.recordValue(i);
+        }
+        byte[] bytes1 = histogram1.toBytes();
+
+        DirectMapHistogram directHistogram = DirectMapHistogram.wrapBytes(bytes1);
+        ArrayHistogram histogram2 = new ArrayHistogram(1);
+        histogram2.merge(directHistogram);
+        System.out.println(histogram2.describe());
+    }
+
+    @Test
+    public void testDirectArrayHistogramMerge() {
+        ArrayHistogram histogram1 = new ArrayHistogram(1);
+        int updatableSerializationBytes = DirectArrayHistogram.getUpdatableSerializationBytes(1, 100000, 1);
+        DirectArrayHistogram histogram2 = new DirectArrayHistogram(1, 100000, 1, ByteBuffer.allocate(updatableSerializationBytes));
+        for (int i = 0; i < 10000; i++) {
+            histogram1.recordValue(i);
+            histogram2.recordValue(i);
+        }
+        byte[] bytes1 = histogram1.toBytes();
+        byte[] bytes2 = histogram2.toBytes();
+
+        DirectArrayHistogram histogram = new DirectArrayHistogram(1, 100000, 1, ByteBuffer.allocate(updatableSerializationBytes));
+        histogram.merge(DirectMapHistogram.wrapBytes(bytes1));
+        histogram.merge(DirectMapHistogram.wrapBytes(bytes2));
+        System.out.println(histogram.describe());
+        for (Percentile percentile : histogram.percentileList(5)) {
+            System.out.println(percentile);
+        }
+    }
+}
+\ No newline at end of file