Add SM2KeyExchangeTest to RegressionTest

Author: gefeili

prov/src/test/java/org/bouncycastle/jce/provider/test/RegressionTest.java

@@ -90,6 +90,7 @@ public class RegressionTest
         new SkeinTest(),
         new SlotTwoTest(),
         new SM2CipherTest(),
+        new SM2KeyExchangeTest(),
         new SM2SignatureTest(),
         new SM4Test(),
         new ThreefishTest(),

prov/src/test/java/org/bouncycastle/jce/provider/test/SM2KeyExchangeTest.java

@@ -3,26 +3,16 @@
 import java.security.KeyPair;
 import java.security.KeyPairGenerator;
 import java.security.SecureRandom;
-import java.security.Security;
 
 import javax.crypto.KeyAgreement;
 
 import org.bouncycastle.jcajce.spec.SM2KeyExchangeSpec;
-import org.bouncycastle.jce.provider.BouncyCastleProvider;
 import org.bouncycastle.util.Strings;
 import org.bouncycastle.util.test.SimpleTest;
 
 public class SM2KeyExchangeTest
     extends SimpleTest
 {
-    public static void main(String[] args)
-        throws Exception
-    {
-        SM2KeyExchangeTest test = new SM2KeyExchangeTest();
-        Security.addProvider(new BouncyCastleProvider());
-        test.performTest();
-    }
-
     @Override
     public String getName()
     {