1 files changed, 41 insertions, 0 deletions
diff --git a/src/test/java/org/traccar/helper/BufferUtilTest.java b/src/test/java/org/traccar/helper/BufferUtilTest.java
new file mode 100644
index 000000000..0196cef9d
--- /dev/null
+++ b/src/test/java/org/traccar/helper/BufferUtilTest.java
@@ -0,0 +1,41 @@
+package org.traccar.helper;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import org.junit.Test;
+
+import java.nio.charset.StandardCharsets;
+
+import static org.junit.Assert.assertEquals;
+
+public class BufferUtilTest {
+
+    @Test
+    public void testReadSignedMagnitudeInt() {
+        ByteBuf buf = Unpooled.wrappedBuffer(DataConverter.parseHex("80000001"));
+        assertEquals(-1, BufferUtil.readSignedMagnitudeInt(buf));
+    }
+
+    @Test
+    public void test1() {
+        ByteBuf buf = Unpooled.copiedBuffer("abcdef", StandardCharsets.US_ASCII);
+        assertEquals(2, BufferUtil.indexOf("cd", buf));
+    }
+
+    @Test
+    public void test2() {
+        ByteBuf buf = Unpooled.copiedBuffer("abcdef", StandardCharsets.US_ASCII);
+        buf.readerIndex(1);
+        buf.writerIndex(5);
+        assertEquals(2, BufferUtil.indexOf("cd", buf));
+    }
+
+    @Test
+    public void test3() {
+        ByteBuf buf = Unpooled.copiedBuffer("abcdefgh", StandardCharsets.US_ASCII);
+        buf.readerIndex(1);
+        buf.writerIndex(7);
+        assertEquals(3, BufferUtil.indexOf("de", buf, 2, 6));
+    }
+
+}