1 files changed, 254 insertions, 0 deletions
diff --git a/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/utils/MockParcel.java b/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/utils/MockParcel.java
new file mode 100644
index 0000000000..dd4c7b25ee
--- /dev/null
+++ b/platform/android/MapboxGLAndroidSDK/src/test/java/com/mapbox/mapboxsdk/utils/MockParcel.java
@@ -0,0 +1,254 @@
+package com.mapbox.mapboxsdk.utils;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.support.annotation.NonNull;
+
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.stubbing.Answer;
+
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+
+import static junit.framework.Assert.assertEquals;
+import static org.junit.Assert.assertArrayEquals;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyByte;
+import static org.mockito.Matchers.anyDouble;
+import static org.mockito.Matchers.anyFloat;
+import static org.mockito.Matchers.anyInt;
+import static org.mockito.Matchers.anyLong;
+import static org.mockito.Matchers.anyString;
+import static org.mockito.Matchers.eq;
+import static org.mockito.Mockito.doAnswer;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class MockParcel {
+
+  public static Parcelable obtain(@NonNull Parcelable object) {
+    return obtain(object, 0);
+  }
+
+  public static Parcelable obtain(@NonNull Parcelable object, int describeContentsValue) {
+    testDescribeContents(object, describeContentsValue);
+    testParcelableArray(object);
+    return testParcelable(object);
+  }
+
+  public static Parcelable testParcelable(@NonNull Parcelable object) {
+    Parcel parcel = ParcelMocker.obtain(object);
+    object.writeToParcel(parcel, 0);
+    parcel.setDataPosition(0);
+
+    try {
+      Field field = object.getClass().getDeclaredField("CREATOR");
+      field.setAccessible(true);
+      Class<?> creatorClass = field.getType();
+      Object fieldValue = field.get(object);
+      Method myMethod = creatorClass.getDeclaredMethod("createFromParcel", Parcel.class);
+      return (Parcelable) myMethod.invoke(fieldValue, parcel);
+    } catch (Exception exception) {
+      return null;
+    }
+  }
+
+  public static void testParcelableArray(@NonNull Parcelable object) {
+    Parcelable[] objects = new Parcelable[] {object};
+    Parcel parcel = ParcelMocker.obtain(objects);
+    parcel.writeParcelableArray(objects, 0);
+    parcel.setDataPosition(0);
+    Parcelable[] parcelableArray = parcel.readParcelableArray(object.getClass().getClassLoader());
+    assertArrayEquals("parcel should match initial object", objects, parcelableArray);
+  }
+
+  public static void testDescribeContents(@NonNull Parcelable object, int describeContentsValue) {
+    if (describeContentsValue == 0) {
+      assertEquals("\nExpecting a describeContents() value of 0 for a " + object.getClass().getSimpleName()
+        + " instance." + "\nYou can provide a different value for describeContentValue through the obtain method.",
+        0,
+        object.describeContents());
+    } else {
+      assertEquals("Expecting a describeContents() value of " + describeContentsValue,
+        describeContentsValue,
+        object.describeContents());
+    }
+  }
+
+  private static class ParcelMocker {
+
+    public static Parcel obtain(@NonNull Parcelable target) {
+      Parcel parcel = new ParcelMocker(target).getMockedParcel();
+      target.writeToParcel(parcel, 0);
+      parcel.setDataPosition(0);
+      return parcel;
+    }
+
+    public static Parcel obtain(@NonNull Parcelable[] targets) {
+      if (targets.length == 0) {
+        throw new IllegalArgumentException("The passed argument may not be empty");
+      }
+      Parcel parcel = new ParcelMocker(targets[0]).getMockedParcel();
+      parcel.writeParcelableArray(targets, 0);
+      parcel.setDataPosition(0);
+      return parcel;
+    }
+
+    private List<Object> objects;
+    private Object object;
+    private Parcel mockedParcel;
+    private int position;
+
+    private ParcelMocker(Object o) {
+      this.object = o;
+      mockedParcel = mock(Parcel.class);
+      objects = new ArrayList<>();
+      setupMock();
+    }
+
+    private Parcel getMockedParcel() {
+      return mockedParcel;
+    }
+
+    private void setupMock() {
+      setupWrites();
+      setupReads();
+      setupOthers();
+    }
+
+    private void setupWrites() {
+      Answer<Void> writeValueAnswer = new Answer<Void>() {
+        @Override
+        public Void answer(InvocationOnMock invocation) throws Throwable {
+          Object parameter = invocation.getArguments()[0];
+          objects.add(parameter);
+          return null;
+        }
+      };
+      Answer<Void> writeArrayAnswer = new Answer<Void>() {
+        @Override
+        public Void answer(InvocationOnMock invocation) throws Throwable {
+          Object[] parameters = (Object[]) invocation.getArguments()[0];
+          objects.add(parameters.length);
+          for (Object o : parameters) {
+            objects.add(o);
+          }
+          return null;
+        }
+      };
+      Answer<Void> writeIntArrayAnswer = new Answer<Void>() {
+        @Override
+        public Void answer(InvocationOnMock invocation) throws Throwable {
+          int[] parameters = (int[]) invocation.getArguments()[0];
+          if (parameters != null) {
+            objects.add(parameters.length);
+            for (Object o : parameters) {
+              objects.add(o);
+            }
+          } else {
+            objects.add(-1);
+          }
+          return null;
+        }
+      };
+      doAnswer(writeValueAnswer).when(mockedParcel).writeByte(anyByte());
+      doAnswer(writeValueAnswer).when(mockedParcel).writeLong(anyLong());
+      doAnswer(writeValueAnswer).when(mockedParcel).writeString(anyString());
+      doAnswer(writeValueAnswer).when(mockedParcel).writeInt(anyInt());
+      doAnswer(writeIntArrayAnswer).when(mockedParcel).writeIntArray(any(int[].class));
+      doAnswer(writeValueAnswer).when(mockedParcel).writeDouble(anyDouble());
+      doAnswer(writeValueAnswer).when(mockedParcel).writeFloat(anyFloat());
+      doAnswer(writeValueAnswer).when(mockedParcel).writeParcelable(any(Parcelable.class), eq(0));
+      doAnswer(writeArrayAnswer).when(mockedParcel).writeParcelableArray(any(Parcelable[].class), eq(0));
+    }
+
+    private void setupReads() {
+      when(mockedParcel.readInt()).then(new Answer<Integer>() {
+        @Override
+        public Integer answer(InvocationOnMock invocation) throws Throwable {
+          return (Integer) objects.get(position++);
+        }
+      });
+      when(mockedParcel.readByte()).thenAnswer(new Answer<Byte>() {
+        @Override
+        public Byte answer(InvocationOnMock invocation) throws Throwable {
+          return (Byte) objects.get(position++);
+        }
+      });
+      when(mockedParcel.readLong()).thenAnswer(new Answer<Long>() {
+        @Override
+        public Long answer(InvocationOnMock invocation) throws Throwable {
+          return (Long) objects.get(position++);
+        }
+      });
+      when(mockedParcel.readString()).thenAnswer(new Answer<String>() {
+        @Override
+        public String answer(InvocationOnMock invocation) throws Throwable {
+          return (String) objects.get(position++);
+        }
+      });
+      when(mockedParcel.readDouble()).thenAnswer(new Answer<Double>() {
+        @Override
+        public Double answer(InvocationOnMock invocation) throws Throwable {
+          return (Double) objects.get(position++);
+        }
+      });
+      when(mockedParcel.readFloat()).thenAnswer(new Answer<Float>() {
+        @Override
+        public Float answer(InvocationOnMock invocation) throws Throwable {
+          return (Float) objects.get(position++);
+        }
+      });
+      when(mockedParcel.readParcelable(Parcelable.class.getClassLoader())).thenAnswer(new Answer<Parcelable>() {
+        @Override
+        public Parcelable answer(InvocationOnMock invocation) throws Throwable {
+          return (Parcelable) objects.get(position++);
+        }
+      });
+      when(mockedParcel.readParcelableArray(Parcelable.class.getClassLoader())).thenAnswer(new Answer<Object[]>() {
+        @Override
+        public Object[] answer(InvocationOnMock invocation) throws Throwable {
+          int size = (Integer) objects.get(position++);
+          Field field = object.getClass().getDeclaredField("CREATOR");
+          field.setAccessible(true);
+          Class<?> creatorClass = field.getType();
+          Object fieldValue = field.get(object);
+          Method myMethod = creatorClass.getDeclaredMethod("newArray", int.class);
+          Object[] array = (Object[]) myMethod.invoke(fieldValue, size);
+          for (int i = 0; i < size; i++) {
+            array[i] = objects.get(position++);
+          }
+          return array;
+        }
+      });
+      when(mockedParcel.createIntArray()).then(new Answer<int[]>() {
+        @Override
+        public int[] answer(InvocationOnMock invocation) throws Throwable {
+          int size = (Integer) objects.get(position++);
+          if (size == -1) {
+            return null;
+          }
+
+          int[] array = new int[size];
+          for (int i = 0; i < size; i++) {
+            array[i] = (Integer) objects.get(position++);
+          }
+
+          return array;
+        }
+      });
+    }
+
+    private void setupOthers() {
+      doAnswer(new Answer<Void>() {
+        @Override
+        public Void answer(InvocationOnMock invocation) throws Throwable {
+          position = ((Integer) invocation.getArguments()[0]);
+          return null;
+        }
+      }).when(mockedParcel).setDataPosition(anyInt());
+    }
+  }
+}