4 files changed, 8 insertions, 5 deletions
diff --git a/test/org/traccar/ProtocolTest.java b/test/org/traccar/ProtocolTest.java
index 2f5f3962f..a8f3d13cf 100644
--- a/test/org/traccar/ProtocolTest.java
+++ b/test/org/traccar/ProtocolTest.java
@@ -15,6 +15,7 @@ import org.traccar.model.Position;
 import javax.xml.bind.DatatypeConverter;
 import java.nio.ByteOrder;
 import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 import java.text.DateFormat;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
@@ -87,7 +88,7 @@ public class ProtocolTest {
     }
 
     protected ChannelBuffer buffer(String... data) {
-        return ChannelBuffers.copiedBuffer(concatenateStrings(data), Charset.defaultCharset());
+        return ChannelBuffers.copiedBuffer(concatenateStrings(data), StandardCharsets.US_ASCII);
     }
 
     protected DefaultHttpRequest request(String url) {
diff --git a/test/org/traccar/helper/ChecksumTest.java b/test/org/traccar/helper/ChecksumTest.java
index a2e69eb5a..82bae7346 100644
--- a/test/org/traccar/helper/ChecksumTest.java
+++ b/test/org/traccar/helper/ChecksumTest.java
@@ -6,12 +6,13 @@ import org.junit.Assert;
 import org.junit.Test;
 
 import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 
 public class ChecksumTest {
 
     @Test
     public void testCrc16() {
-        ChannelBuffer buf = ChannelBuffers.copiedBuffer("123456789", Charset.defaultCharset());
+        ChannelBuffer buf = ChannelBuffers.copiedBuffer("123456789", StandardCharsets.US_ASCII);
 
         Assert.assertEquals(0x906e, Checksum.crc16(Checksum.CRC16_X25, buf.toByteBuffer()));
         Assert.assertEquals(0x29b1, Checksum.crc16(Checksum.CRC16_CCITT_FALSE, buf.toByteBuffer()));
diff --git a/test/org/traccar/helper/StringFinderTest.java b/test/org/traccar/helper/StringFinderTest.java
index 71f9215db..1c8234db1 100644
--- a/test/org/traccar/helper/StringFinderTest.java
+++ b/test/org/traccar/helper/StringFinderTest.java
@@ -8,6 +8,7 @@ import org.junit.Assert;
 import org.junit.Test;
 
 import java.nio.charset.Charset;
+import java.nio.charset.StandardCharsets;
 
 import static org.junit.Assert.assertArrayEquals;
 import static org.junit.Assert.assertEquals;
@@ -17,7 +18,7 @@ public class StringFinderTest {
     @Test
     public void testFind() {
 
-        ChannelBuffer buf = ChannelBuffers.copiedBuffer("hello world", Charset.defaultCharset());
+        ChannelBuffer buf = ChannelBuffers.copiedBuffer("hello world", StandardCharsets.US_ASCII);
 
         Assert.assertEquals(-1, buf.indexOf(0, buf.writerIndex(), new StringFinder("bar")));
         Assert.assertEquals(6, buf.indexOf(0, buf.writerIndex(), new StringFinder("world")));
diff --git a/test/org/traccar/protocol/Jt600ProtocolDecoderTest.java b/test/org/traccar/protocol/Jt600ProtocolDecoderTest.java
index 3969e8b2c..b95d8ddce 100644
--- a/test/org/traccar/protocol/Jt600ProtocolDecoderTest.java
+++ b/test/org/traccar/protocol/Jt600ProtocolDecoderTest.java
@@ -32,10 +32,10 @@ public class Jt600ProtocolDecoderTest extends ProtocolTest {
                 "(3120820029,W01,02553.3555,E,2438.0997,S,A,171012,053339,0,8,20,6,31,5,20,20)"));
 
         /*verifyPosition(decoder, text( ChannelBuffers.copiedBuffer(
-                "(3330104377,U01,010100,010228,F,00.000000,N,000.000000,E,0,0,0,0%,00001000000000,741,14,22,0,206)", Charset.defaultCharset())));
+                "(3330104377,U01,010100,010228,F,00.000000,N,000.000000,E,0,0,0,0%,00001000000000,741,14,22,0,206)", StandardCharsets.US_ASCII)));
 
         verifyPosition(decoder, text( ChannelBuffers.copiedBuffer(
-                "(6221107674,2,U09,129,2,A,280513113036,E,02711.0500,S,1721.0876,A,030613171243,E,02756.7618,S,2300.0325,3491,538200,14400,1)", Charset.defaultCharset())));*/
+                "(6221107674,2,U09,129,2,A,280513113036,E,02711.0500,S,1721.0876,A,030613171243,E,02756.7618,S,2300.0325,3491,538200,14400,1)",StandardCharsets.US_ASCII))));*/
 
     }