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Nov 7, 2024
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[Android] added tests for Tensor.java #6683

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270 changes: 270 additions & 0 deletions extension/android/src/test/java/org/pytorch/executorch/TensorTest.java
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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree.
*/

package org.pytorch.executorch;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
import static org.junit.Assert.fail;

import java.nio.ByteBuffer;
import java.nio.DoubleBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.nio.LongBuffer;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;
import org.pytorch.executorch.Tensor;

/** Unit tests for {@link Tensor}. */
@RunWith(JUnit4.class)
public class TensorTest {

@Test
public void testFloatTensor() {
float data[] = {Float.MIN_VALUE, 0f, 0.1f, Float.MAX_VALUE};
long shape[] = {2, 2};
Tensor tensor = Tensor.fromBlob(data, shape);
assertEquals(tensor.dtype(), DType.FLOAT);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsFloatArray()[0], 1e-5);
assertEquals(data[1], tensor.getDataAsFloatArray()[1], 1e-5);
assertEquals(data[2], tensor.getDataAsFloatArray()[2], 1e-5);
assertEquals(data[3], tensor.getDataAsFloatArray()[3], 1e-5);

FloatBuffer floatBuffer = Tensor.allocateFloatBuffer(4);
floatBuffer.put(data);
tensor = Tensor.fromBlob(floatBuffer, shape);
assertEquals(tensor.dtype(), DType.FLOAT);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsFloatArray()[0], 1e-5);
assertEquals(data[1], tensor.getDataAsFloatArray()[1], 1e-5);
assertEquals(data[2], tensor.getDataAsFloatArray()[2], 1e-5);
assertEquals(data[3], tensor.getDataAsFloatArray()[3], 1e-5);
}

@Test
public void testIntTensor() {
int data[] = {Integer.MIN_VALUE, 0, 1, Integer.MAX_VALUE};
long shape[] = {1, 4, 1};
Tensor tensor = Tensor.fromBlob(data, shape);
assertEquals(tensor.dtype(), DType.INT32);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(shape[2], tensor.shape()[2]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsIntArray()[0]);
assertEquals(data[1], tensor.getDataAsIntArray()[1]);
assertEquals(data[2], tensor.getDataAsIntArray()[2]);
assertEquals(data[3], tensor.getDataAsIntArray()[3]);

IntBuffer intBuffer = Tensor.allocateIntBuffer(4);
intBuffer.put(data);
tensor = Tensor.fromBlob(intBuffer, shape);
assertEquals(tensor.dtype(), DType.INT32);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(shape[2], tensor.shape()[2]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsIntArray()[0]);
assertEquals(data[1], tensor.getDataAsIntArray()[1]);
assertEquals(data[2], tensor.getDataAsIntArray()[2]);
assertEquals(data[3], tensor.getDataAsIntArray()[3]);
}

@Test
public void testDoubleTensor() {
double data[] = {Double.MIN_VALUE, 0.0d, 0.1d, Double.MAX_VALUE};
long shape[] = {1, 4};
Tensor tensor = Tensor.fromBlob(data, shape);
assertEquals(tensor.dtype(), DType.DOUBLE);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsDoubleArray()[0], 1e-5);
assertEquals(data[1], tensor.getDataAsDoubleArray()[1], 1e-5);
assertEquals(data[2], tensor.getDataAsDoubleArray()[2], 1e-5);
assertEquals(data[3], tensor.getDataAsDoubleArray()[3], 1e-5);

DoubleBuffer doubleBuffer = Tensor.allocateDoubleBuffer(4);
doubleBuffer.put(data);
tensor = Tensor.fromBlob(doubleBuffer, shape);
assertEquals(tensor.dtype(), DType.DOUBLE);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsDoubleArray()[0], 1e-5);
assertEquals(data[1], tensor.getDataAsDoubleArray()[1], 1e-5);
assertEquals(data[2], tensor.getDataAsDoubleArray()[2], 1e-5);
assertEquals(data[3], tensor.getDataAsDoubleArray()[3], 1e-5);
}

@Test
public void testLongTensor() {
long data[] = {Long.MIN_VALUE, 0L, 1L, Long.MAX_VALUE};
long shape[] = {4, 1};
Tensor tensor = Tensor.fromBlob(data, shape);
assertEquals(tensor.dtype(), DType.INT64);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsLongArray()[0]);
assertEquals(data[1], tensor.getDataAsLongArray()[1]);
assertEquals(data[2], tensor.getDataAsLongArray()[2]);
assertEquals(data[3], tensor.getDataAsLongArray()[3]);

LongBuffer longBuffer = Tensor.allocateLongBuffer(4);
longBuffer.put(data);
tensor = Tensor.fromBlob(longBuffer, shape);
assertEquals(tensor.dtype(), DType.INT64);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsLongArray()[0]);
assertEquals(data[1], tensor.getDataAsLongArray()[1]);
assertEquals(data[2], tensor.getDataAsLongArray()[2]);
assertEquals(data[3], tensor.getDataAsLongArray()[3]);
}

@Test
public void testSignedByteTensor() {
byte data[] = {Byte.MIN_VALUE, (byte) 0, (byte) 1, Byte.MAX_VALUE};
long shape[] = {1, 1, 4};
Tensor tensor = Tensor.fromBlob(data, shape);
assertEquals(tensor.dtype(), DType.INT8);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(shape[2], tensor.shape()[2]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsByteArray()[0]);
assertEquals(data[1], tensor.getDataAsByteArray()[1]);
assertEquals(data[2], tensor.getDataAsByteArray()[2]);
assertEquals(data[3], tensor.getDataAsByteArray()[3]);

ByteBuffer byteBuffer = Tensor.allocateByteBuffer(4);
byteBuffer.put(data);
tensor = Tensor.fromBlob(byteBuffer, shape);
assertEquals(tensor.dtype(), DType.INT8);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(shape[2], tensor.shape()[2]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsByteArray()[0]);
assertEquals(data[1], tensor.getDataAsByteArray()[1]);
assertEquals(data[2], tensor.getDataAsByteArray()[2]);
assertEquals(data[3], tensor.getDataAsByteArray()[3]);
}

@Test
public void testUnsignedByteTensor() {
byte data[] = {(byte) 0, (byte) 1, (byte) 2, (byte) 255};
long shape[] = {4, 1, 1};
Tensor tensor = Tensor.fromBlobUnsigned(data, shape);
assertEquals(tensor.dtype(), DType.UINT8);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(shape[2], tensor.shape()[2]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsUnsignedByteArray()[0]);
assertEquals(data[1], tensor.getDataAsUnsignedByteArray()[1]);
assertEquals(data[2], tensor.getDataAsUnsignedByteArray()[2]);
assertEquals(data[3], tensor.getDataAsUnsignedByteArray()[3]);

ByteBuffer byteBuffer = Tensor.allocateByteBuffer(4);
byteBuffer.put(data);
tensor = Tensor.fromBlobUnsigned(byteBuffer, shape);
assertEquals(tensor.dtype(), DType.UINT8);
assertEquals(shape[0], tensor.shape()[0]);
assertEquals(shape[1], tensor.shape()[1]);
assertEquals(shape[2], tensor.shape()[2]);
assertEquals(4, tensor.numel());
assertEquals(data[0], tensor.getDataAsUnsignedByteArray()[0]);
assertEquals(data[1], tensor.getDataAsUnsignedByteArray()[1]);
assertEquals(data[2], tensor.getDataAsUnsignedByteArray()[2]);
assertEquals(data[3], tensor.getDataAsUnsignedByteArray()[3]);
}

@Test
public void testIllegalDataTypeException() {
float data[] = {Float.MIN_VALUE, 0f, 0.1f, Float.MAX_VALUE};
long shape[] = {2, 2};
Tensor tensor = Tensor.fromBlob(data, shape);
assertEquals(tensor.dtype(), DType.FLOAT);

try {
tensor.getDataAsByteArray();
fail("Should have thrown an exception");
} catch (IllegalStateException e) {
// expected
}
try {
tensor.getDataAsUnsignedByteArray();
fail("Should have thrown an exception");
} catch (IllegalStateException e) {
// expected
}
try {
tensor.getDataAsIntArray();
fail("Should have thrown an exception");
} catch (IllegalStateException e) {
// expected
}
try {
tensor.getDataAsDoubleArray();
fail("Should have thrown an exception");
} catch (IllegalStateException e) {
// expected
}
try {
tensor.getDataAsLongArray();
fail("Should have thrown an exception");
} catch (IllegalStateException e) {
// expected
}
}

@Test
public void testIllegalArguments() {
float data[] = {Float.MIN_VALUE, 0f, 0.1f, Float.MAX_VALUE};
long shapeWithNegativeValues[] = {-1, 2};
long mismatchShape[] = {1, 2};

try {
Tensor tensor = Tensor.fromBlob((float[]) null, mismatchShape);
fail("Should have thrown an exception");
} catch (IllegalArgumentException e) {
// expected
}
try {
Tensor tensor = Tensor.fromBlob(data, null);
fail("Should have thrown an exception");
} catch (IllegalArgumentException e) {
// expected
}
try {
Tensor tensor = Tensor.fromBlob(data, shapeWithNegativeValues);
fail("Should have thrown an exception");
} catch (IllegalArgumentException e) {
// expected
}
try {
Tensor tensor = Tensor.fromBlob(data, mismatchShape);
fail("Should have thrown an exception");
} catch (IllegalArgumentException e) {
// expected
}
}
}
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