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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.mojo.bindings;
import android.support.test.filters.SmallTest;
import junit.framework.TestCase;
import org.chromium.mojo.HandleMock;
import org.chromium.mojo.bindings.test.mojom.mojo.Struct1;
import org.chromium.mojo.bindings.test.mojom.mojo.Struct2;
import org.chromium.mojo.bindings.test.mojom.mojo.Struct3;
import org.chromium.mojo.bindings.test.mojom.mojo.Struct4;
import org.chromium.mojo.bindings.test.mojom.mojo.Struct5;
import org.chromium.mojo.bindings.test.mojom.mojo.Struct6;
import org.chromium.mojo.bindings.test.mojom.mojo.StructOfNullables;
import java.nio.ByteBuffer;
/**
* Tests for the serialization logic of the generated structs, using structs defined in
* mojo/public/interfaces/bindings/tests/serialization_test_structs.mojom .
*/
public class SerializationTest extends TestCase {
private static void assertThrowsSerializationException(Struct struct) {
try {
struct.serialize(null);
fail("Serialization of invalid struct should have thrown an exception.");
} catch (SerializationException ex) {
// Expected.
}
}
/**
* Verifies that serializing a struct with an invalid handle of a non-nullable type throws an
* exception.
*/
@SmallTest
public void testHandle() {
Struct2 struct = new Struct2();
assertFalse(struct.hdl.isValid());
assertThrowsSerializationException(struct);
// Make the struct valid and verify that it serializes without an exception.
struct.hdl = new HandleMock();
struct.serialize(null);
}
/**
* Verifies that serializing a struct with a null struct pointer throws an exception.
*/
@SmallTest
public void testStructPointer() {
Struct3 struct = new Struct3();
assertNull(struct.struct1);
assertThrowsSerializationException(struct);
// Make the struct valid and verify that it serializes without an exception.
struct.struct1 = new Struct1();
struct.serialize(null);
}
/**
* Verifies that serializing a struct with an array of structs throws an exception when the
* struct is invalid.
*/
@SmallTest
public void testStructArray() {
Struct4 struct = new Struct4();
assertNull(struct.data);
assertThrowsSerializationException(struct);
// Create the (1-element) array but have the element null.
struct.data = new Struct1[1];
assertThrowsSerializationException(struct);
// Create the array element, struct should serialize now.
struct.data[0] = new Struct1();
struct.serialize(null);
}
/**
* Verifies that serializing a struct with a fixed-size array of incorrect length throws an
* exception.
*/
@SmallTest
public void testFixedSizeArray() {
Struct5 struct = new Struct5();
assertNull(struct.pair);
assertThrowsSerializationException(struct);
// Create the (1-element) array, 2-element array is required.
struct.pair = new Struct1[1];
struct.pair[0] = new Struct1();
assertThrowsSerializationException(struct);
// Create the array of a correct size, struct should serialize now.
struct.pair = new Struct1[2];
struct.pair[0] = new Struct1();
struct.pair[1] = new Struct1();
struct.serialize(null);
}
/**
* Verifies that serializing a struct with a null string throws an exception.
*/
@SmallTest
public void testString() {
Struct6 struct = new Struct6();
assertNull(struct.str);
assertThrowsSerializationException(struct);
// Make the struct valid and verify that it serializes without an exception.
struct.str = "";
struct.serialize(null);
}
/**
* Verifies that a struct with an invalid nullable handle, null nullable struct pointer and null
* nullable string serializes without an exception.
*/
@SmallTest
public void testNullableFields() {
StructOfNullables struct = new StructOfNullables();
assertFalse(struct.hdl.isValid());
assertNull(struct.struct1);
assertNull(struct.str);
struct.serialize(null);
}
/**
* Verifies that a struct can be serialized to and deserialized from a ByteBuffer.
*/
@SmallTest
public void testByteBufferSerialization() {
Struct1 input = new Struct1();
input.i = 0x7F;
ByteBuffer buf = input.serialize();
byte[] expected_raw_bytes = {16, 0, 0, 0, 0, 0, 0, 0, 0x7F, 0, 0, 0, 0, 0, 0, 0};
ByteBuffer expected_buf = ByteBuffer.wrap(expected_raw_bytes);
assertEquals(expected_buf, buf);
Struct1 output = Struct1.deserialize(buf);
assertEquals(0x7F, output.i);
}
/**
* Verifies that a struct with handles cannot be serialized to a ByteBuffer.
*/
@SmallTest
public void testByteBufferSerializationWithHandles() {
StructOfNullables struct = new StructOfNullables();
assertFalse(struct.hdl.isValid());
assertNull(struct.struct1);
assertNull(struct.str);
// It is okay to serialize invalid handles.
struct.serialize();
struct.hdl = new HandleMock();
try {
struct.serialize();
fail("Serializing a struct with handles to a ByteBuffer should have thrown an "
+ "exception.");
} catch (UnsupportedOperationException ex) {
// Expected.
}
}
}
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