Fix Junit 4 assertions in JUnit5 tests

Author: WesleyRosenblum

src/test/java/com/amazonaws/encryptionsdk/DecryptRequestTest.java

@@ -20,15 +20,15 @@
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 
-import static org.junit.Assert.assertTrue;
 import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 @ExtendWith(MockitoExtension.class)
 class DecryptRequestTest {
 
     @Mock private Keyring keyring;
     @Mock private ParsedCiphertext parsedCiphertext;
-    private static final byte[] CIPHERTEXT = new byte[] {1,2,3};
+    private static final byte[] CIPHERTEXT = new byte[]{1, 2, 3};
 
     @Test
     void testBothCiphertextAndParsedCiphertext() {

src/test/java/com/amazonaws/encryptionsdk/EncryptRequestTest.java

@@ -19,16 +19,16 @@
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 
-import static org.junit.Assert.assertTrue;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 @ExtendWith(MockitoExtension.class)
 class EncryptRequestTest {
 
     @Mock private Keyring keyring;
     @Mock private CryptoMaterialsManager cmm;
-    private static final byte[] PLAINTEXT = new byte[] {1, 2,3 };
+    private static final byte[] PLAINTEXT = new byte[]{1, 2, 3};
 
     @Test
     void testBothCmmAndKeyring() {
@@ -68,6 +68,6 @@ void testNoEncryptionContext() {
     @Test
     void testNullPlaintext() {
         assertThrows(NullPointerException.class, () -> EncryptRequest.builder()
-            .keyring(keyring).build());
+                .keyring(keyring).build());
     }
 }