SCRIPT Move java files

wpimath/src/test/java/org/wpilib/StructTestBase.java

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+// Copyright (c) FIRST and other WPILib contributors.
+// Open Source Software; you can modify and/or share it under the terms of
+// the WPILib BSD license file in the root directory of this project.
+
+package edu.wpi.first.wpilibj;
+
+import edu.wpi.first.util.struct.Struct;
+import java.nio.ByteBuffer;
+import java.nio.ByteOrder;
+import org.junit.jupiter.api.Test;
+
+public abstract class StructTestBase<T> {
+  private final T m_testData;
+  private final Struct<T> m_struct;
+
+  protected StructTestBase(T testData, Struct<T> struct) {
+    m_testData = testData;
+    m_struct = struct;
+  }
+
+  public abstract void checkEquals(T testData, T data);
+
+  @Test
+  void testRoundTrip() {
+    ByteBuffer buffer = ByteBuffer.allocate(m_struct.getSize());
+    buffer.order(ByteOrder.LITTLE_ENDIAN);
+    m_struct.pack(buffer, m_testData);
+    buffer.rewind();
+
+    final T data = m_struct.unpack(buffer);
+    checkEquals(m_testData, data);
+  }
+
+  @Test
+  void testDoublePack() {
+    ByteBuffer buffer = ByteBuffer.allocate(m_struct.getSize());
+    buffer.order(ByteOrder.LITTLE_ENDIAN);
+    m_struct.pack(buffer, m_testData);
+    buffer.rewind();
+    m_struct.pack(buffer, m_testData);
+    buffer.rewind();
+
+    final T data = m_struct.unpack(buffer);
+    checkEquals(m_testData, data);
+  }
+
+  @Test
+  void testDoubleUnpack() {
+    ByteBuffer buffer = ByteBuffer.allocate(m_struct.getSize());
+    buffer.order(ByteOrder.LITTLE_ENDIAN);
+    m_struct.pack(buffer, m_testData);
+    buffer.rewind();
+
+    T data = m_struct.unpack(buffer);
+    checkEquals(m_testData, data);
+    buffer.rewind();
+
+    data = m_struct.unpack(buffer);
+    checkEquals(m_testData, data);
+  }
+}