Do not use utility classes from dependencies

We have been avoiding this previously and we need to continue keeping
out of any unnecessary dependencies in the code, especially we should
not use any internal classes and transitive dependencies of the
dependencies, because it easily breaks dependency updates.

Author: akudiyar

src/test/java/io/tarantool/driver/TarantoolUtils.java

@@ -1,7 +1,6 @@
 package io.tarantool.driver;
 
 import io.tarantool.driver.utils.Assert;
-import org.testcontainers.shaded.org.apache.commons.lang3.StringUtils;
 
 import java.util.Arrays;
 import java.util.Collections;
@@ -18,13 +17,14 @@ private TarantoolUtils() {
     public static boolean versionGreaterOrEqualThen(String tarantoolVersion) {
         Assert.notNull(tarantoolVersion, "tarantoolVersion must not be null");
         String tarantoolCiVersion = java.lang.System.getenv(TARANTOOL_VERSION);
-        if (StringUtils.isEmpty(tarantoolCiVersion)) {
+        if (tarantoolCiVersion == null || tarantoolCiVersion.isEmpty()) {
             return true;
         }
         TarantoolVersion ciVersion = new TarantoolVersion(tarantoolCiVersion);
         TarantoolVersion version = new TarantoolVersion(tarantoolVersion);
         return ciVersion.getMajor() >= version.getMajor() &&
             ciVersion.getMinor() >= version.getMinor();
+
     }
 
     public static boolean versionWithUUID() {
@@ -44,7 +44,8 @@ public static class TarantoolVersion {
         private Integer minor;
 
         public TarantoolVersion(String stringVersion) {
-            List<String> majorMinor = StringUtils.isEmpty(stringVersion) ? Collections.emptyList() :
+            List<String> majorMinor = stringVersion == null || stringVersion.isEmpty() ?
+                Collections.emptyList() :
                 Arrays.stream(stringVersion.split("\\."))
                     .collect(Collectors.toList());
             if (majorMinor.size() >= 1) {

src/test/java/io/tarantool/driver/integration/ConnectionIT.java

@@ -22,7 +22,6 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.testcontainers.junit.jupiter.Testcontainers;
-import org.testcontainers.shaded.com.fasterxml.jackson.databind.util.ClassUtil;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -364,6 +363,6 @@ public void test_AddressProviderReturnsNull_shouldThrowTarantoolClientException(
 
         // then
         TarantoolClientException exception = assertThrows(TarantoolClientException.class, client::getVersion);
-        assertFalse(ClassUtil.getRootCause(exception) instanceof NullPointerException);
+        assertFalse(Utils.getRootCause(exception) instanceof NullPointerException);
     }
 }

src/test/java/io/tarantool/driver/integration/ConvertersWithClusterClientIT.java

@@ -13,13 +13,11 @@
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.condition.EnabledIf;
-import org.testcontainers.shaded.org.apache.commons.lang3.ArrayUtils;
 
 import java.time.Instant;
 import java.util.UUID;
 
 import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
 import java.util.List;
 
 /**
@@ -87,7 +85,7 @@ public void test_boxSelect_shouldReturnTupleWithInstant() throws Exception {
     public void test_boxOperations_shouldWorkWithVarbinary() throws Exception {
         //given
         byte[] bytes = "hello".getBytes(StandardCharsets.UTF_8);
-        List<Byte> byteList = Arrays.asList(ArrayUtils.toObject(bytes));
+        List<Byte> byteList = Utils.convertBytesToByteList(bytes);
         client.space("space_with_varbinary")
             .insert(tupleFactory.create(1, bytes)).get();
 
@@ -98,7 +96,7 @@ public void test_boxOperations_shouldWorkWithVarbinary() throws Exception {
 
         //then
         byte[] bytesFromTarantool = fields.getByteArray("varbinary_field");
-        List<Byte> byteListFromTarantool = Arrays.asList(ArrayUtils.toObject(bytesFromTarantool));
+        List<Byte> byteListFromTarantool = Utils.convertBytesToByteList(bytesFromTarantool);
         Assertions.assertEquals(byteList, byteListFromTarantool);
     }
 }

src/test/java/io/tarantool/driver/integration/ConvertersWithProxyClientIT.java

@@ -13,13 +13,11 @@
 import org.junit.jupiter.api.Disabled;
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.condition.EnabledIf;
-import org.testcontainers.shaded.org.apache.commons.lang3.ArrayUtils;
 
 import java.time.Instant;
 import java.util.UUID;
 
 import java.nio.charset.StandardCharsets;
-import java.util.Arrays;
 import java.util.List;
 
 /**
@@ -89,7 +87,7 @@ public void test_crudSelect_shouldReturnTupleWithInstant() throws Exception {
     public void test_crudOperations_shouldWorkWithVarbinary() throws Exception {
         //given
         byte[] bytes = "hello".getBytes(StandardCharsets.UTF_8);
-        List<Byte> byteList = Arrays.asList(ArrayUtils.toObject(bytes));
+        List<Byte> byteList = Utils.convertBytesToByteList(bytes);
         client.space("space_with_varbinary")
             .insert(tupleFactory.create(1, bytes)).get();
 
@@ -100,15 +98,15 @@ public void test_crudOperations_shouldWorkWithVarbinary() throws Exception {
 
         //then
         byte[] bytesFromTarantool = fields.getByteArray("varbinary_field");
-        List<Byte> byteListFromTarantool = Arrays.asList(ArrayUtils.toObject(bytesFromTarantool));
+        List<Byte> byteListFromTarantool = Utils.convertBytesToByteList(bytesFromTarantool);
         Assertions.assertEquals(byteList, byteListFromTarantool);
     }
 
     @Test
     public void test_crudOperations_shouldWorkWithBytesAsString() throws Exception {
         //given
         byte[] bytes = "hello".getBytes(StandardCharsets.UTF_8);
-        List<Byte> byteList = Arrays.asList(ArrayUtils.toObject(bytes));
+        List<Byte> byteList = Utils.convertBytesToByteList(bytes);
         client.space("space_with_string")
             .insert(tupleFactory.create(1, bytes)).get();
 
@@ -119,7 +117,7 @@ public void test_crudOperations_shouldWorkWithBytesAsString() throws Exception {
 
         //then
         byte[] bytesFromTarantool = fields.getByteArray("string_field");
-        List<Byte> byteListFromTarantool = Arrays.asList(ArrayUtils.toObject(bytesFromTarantool));
+        List<Byte> byteListFromTarantool = Utils.convertBytesToByteList(bytesFromTarantool);
         Assertions.assertEquals(byteList, byteListFromTarantool);
     }
 }

src/test/java/io/tarantool/driver/integration/Utils.java

@@ -15,6 +15,8 @@
 import java.util.List;
 import java.util.Optional;
 import java.util.concurrent.ExecutionException;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
@@ -103,4 +105,26 @@ private static long crc32(byte[] data) {
         crc32 = Integer.reverse(crc32); // result reflect
         return crc32 & 0x00000000ffffffffL; // the unsigned java problem
     }
+
+    /**
+     * Converts a byte array to a list of bytes
+     *
+     * @param bytes byte array
+     */
+    static List<Byte> convertBytesToByteList(byte[] bytes) {
+        return IntStream.range(0, bytes.length).mapToObj(i -> bytes[i]).collect(Collectors.toList());
+    }
+
+    /**
+     * Find the rootmost non-null cause of an Exception recursively
+     *
+     * @param t exception
+     * @return root cause of the exception or the exception itself
+     */
+    static Throwable getRootCause(Throwable t) {
+        while (t.getCause() != null) {
+            t = t.getCause();
+        }
+        return t;
+    }
 }