/*
 * Copyright 2016-present Facebook, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may
 * not use this file except in compliance with the License. You may obtain
 * a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package com.facebook.buck.macho;

import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;

import com.google.common.primitives.UnsignedInteger;
import org.junit.Test;

public class FatHeaderUtilsTest {

  @Test
  public void testDetectingLittleEndian() {
    assertThat(
        FatHeaderUtils.isLittleEndian(UnsignedInteger.fromIntBits(0xCAFEBABE)), equalTo(false));
    assertThat(
        FatHeaderUtils.isLittleEndian(UnsignedInteger.fromIntBits(0xBEBAFECA)), equalTo(true));
  }

  @Test
  public void testDetectingFatHeaderMagic() {
    assertThat(
        FatHeaderUtils.isFatHeaderMagic(UnsignedInteger.fromIntBits(0xCAFEBABE)), equalTo(true));
    assertThat(
        FatHeaderUtils.isFatHeaderMagic(UnsignedInteger.fromIntBits(0xBEBAFECA)), equalTo(true));
    assertThat(
        FatHeaderUtils.isFatHeaderMagic(UnsignedInteger.fromIntBits(0xFEEDFACE)), equalTo(false));
  }
}