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// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
package org.objectweb.asm;
import static org.junit.jupiter.api.Assertions.assertArrayEquals;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTimeoutPreemptively;
import static org.junit.jupiter.api.Assertions.assertTrue;
import java.time.Duration;
import java.util.Arrays;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.function.Executable;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.ValueSource;
/**
* Unit tests for {@link Type}.
*
* @author Eric Bruneton
*/
class TypeTest implements Opcodes {
@Test
void testGetSort_typeConstants() {
assertEquals(Type.VOID, Type.VOID_TYPE.getSort());
assertEquals(Type.BOOLEAN, Type.BOOLEAN_TYPE.getSort());
assertEquals(Type.CHAR, Type.CHAR_TYPE.getSort());
assertEquals(Type.BYTE, Type.BYTE_TYPE.getSort());
assertEquals(Type.SHORT, Type.SHORT_TYPE.getSort());
assertEquals(Type.INT, Type.INT_TYPE.getSort());
assertEquals(Type.FLOAT, Type.FLOAT_TYPE.getSort());
assertEquals(Type.LONG, Type.LONG_TYPE.getSort());
assertEquals(Type.DOUBLE, Type.DOUBLE_TYPE.getSort());
}
@Test
void testGetSize_typeConstants() {
assertEquals(0, Type.VOID_TYPE.getSize());
assertEquals(1, Type.BOOLEAN_TYPE.getSize());
assertEquals(1, Type.CHAR_TYPE.getSize());
assertEquals(1, Type.BYTE_TYPE.getSize());
assertEquals(1, Type.SHORT_TYPE.getSize());
assertEquals(1, Type.INT_TYPE.getSize());
assertEquals(1, Type.FLOAT_TYPE.getSize());
assertEquals(2, Type.LONG_TYPE.getSize());
assertEquals(2, Type.DOUBLE_TYPE.getSize());
}
@Test
void testGetDescriptor_typeConstants() {
assertEquals("V", Type.VOID_TYPE.getDescriptor());
assertEquals("Z", Type.BOOLEAN_TYPE.getDescriptor());
assertEquals("C", Type.CHAR_TYPE.getDescriptor());
assertEquals("B", Type.BYTE_TYPE.getDescriptor());
assertEquals("S", Type.SHORT_TYPE.getDescriptor());
assertEquals("I", Type.INT_TYPE.getDescriptor());
assertEquals("F", Type.FLOAT_TYPE.getDescriptor());
assertEquals("J", Type.LONG_TYPE.getDescriptor());
assertEquals("J", Type.LONG_TYPE.getDescriptor());
assertEquals("D", Type.DOUBLE_TYPE.getDescriptor());
}
@ParameterizedTest
@ValueSource(
strings = {
"I",
"V",
"Z",
"B",
"C",
"S",
"D",
"F",
"J",
"LI;",
"LV;",
"Ljava/lang/Object;",
"[I",
"[LI;",
"[[Ljava/lang/Object;",
"(IZBCSDFJLI;LV;Ljava/lang/Object;[I[LI;[[Ljava/lang/Object;)V",
"()I",
"()LI;",
"()Ljava/lang/Object;",
"()[I",
"()[LI;",
"()[[Ljava/lang/Object;"
})
void testGetTypeFromDescriptor(final String descriptor) {
Type type = Type.getType(descriptor);
assertEquals(descriptor, type.getDescriptor());
assertEquals(descriptor, type.toString());
}
@Test
void testGetTypeFromDescriptor_invalid() {
Executable getType = () -> Type.getType("-");
IllegalArgumentException exception = assertThrows(IllegalArgumentException.class, getType);
assertEquals("Invalid descriptor: -", exception.getMessage());
}
@ParameterizedTest
@ValueSource(strings = {"I", "V", "java/lang/Object", "[I", "[LI;", "[[Ljava/lang/Object;"})
void testGetObjectType(final String internalName) {
Type type = Type.getObjectType(internalName);
assertEquals(internalName, type.getInternalName());
assertEquals(internalName.charAt(0) == '[' ? Type.ARRAY : Type.OBJECT, type.getSort());
}
@ParameterizedTest
@ValueSource(
strings = {
"(IZBCSDFJLI;LV;Ljava/lang/Object;[I[LI;[[Ljava/lang/Object;)V",
"()I",
"()LI;",
"()Ljava/lang/Object;",
"()[I",
"()[LI;",
"()[[Ljava/lang/Object;"
})
void testGetMethodTypeFromDescriptor(final String methodDescriptor) {
Type type = Type.getMethodType(methodDescriptor);
assertEquals(Type.METHOD, type.getSort());
assertEquals(methodDescriptor, type.getDescriptor());
assertEquals(methodDescriptor, type.toString());
}
@ParameterizedTest
@ValueSource(
strings = {
"(IZBCSDFJLI;LV;Ljava/lang/Object;[I[LI;[[Ljava/lang/Object;)V",
"()I",
"()LI;",
"()Ljava/lang/Object;",
"()[I",
"()[LI;",
"()[[Ljava/lang/Object;"
})
void testGetArgumentTypesGetReturnTypeAndGetMethodType(final String methodDescriptor) {
Type[] argumentTypes = Type.getArgumentTypes(methodDescriptor);
Type returnType = Type.getReturnType(methodDescriptor);
Type methodType = Type.getMethodType(returnType, argumentTypes);
assertEquals(Type.METHOD, methodType.getSort());
assertEquals(methodDescriptor, methodType.getDescriptor());
assertArrayEquals(argumentTypes, methodType.getArgumentTypes());
assertEquals(returnType, methodType.getReturnType());
}
@Test
void testGetArgumentTypesInvalidMethodDescriptor() {
Executable getArgumentTypes = () -> Type.getArgumentTypes("(Ljava/lang/String");
assertTimeoutPreemptively(
Duration.ofMillis(100), () -> assertThrows(RuntimeException.class, getArgumentTypes));
}
@Test
void testGetArgumentTypesInvalidArgumentDescriptor() {
Executable getArgumentTypes = () -> Type.getArgumentTypes("(Ljava/lang/String;-)V");
IllegalArgumentException exception =
assertThrows(IllegalArgumentException.class, getArgumentTypes);
assertEquals("Invalid descriptor: (Ljava/lang/String;-)V", exception.getMessage());
}
@Test
void testGetReturnTypeFromDescriptor() {
assertEquals(Type.INT_TYPE, Type.getReturnType("()I"));
assertEquals(Type.INT_TYPE, Type.getReturnType("(Lpkg/classMethod();)I"));
}
@Test
void testGetTypeFromClass() {
assertEquals(Type.VOID_TYPE, Type.getType(void.class));
assertEquals(Type.BOOLEAN_TYPE, Type.getType(boolean.class));
assertEquals(Type.CHAR_TYPE, Type.getType(char.class));
assertEquals(Type.BYTE_TYPE, Type.getType(byte.class));
assertEquals(Type.SHORT_TYPE, Type.getType(short.class));
assertEquals(Type.INT_TYPE, Type.getType(int.class));
assertEquals(Type.FLOAT_TYPE, Type.getType(float.class));
assertEquals(Type.LONG_TYPE, Type.getType(long.class));
assertEquals(Type.DOUBLE_TYPE, Type.getType(double.class));
assertEquals("Ljava/lang/Object;", Type.getType(Object.class).getDescriptor());
assertEquals("[Ljava/lang/Object;", Type.getType(Object[].class).getDescriptor());
}
@Test
void testGetTypeFromConstructor() throws NoSuchMethodException, SecurityException {
Type type = Type.getType(ClassReader.class.getConstructor(byte[].class, int.class, int.class));
assertEquals("([BII)V", type.getDescriptor());
}
@Test
void testGetTypeFromMethod() throws NoSuchMethodException, SecurityException {
Type type = Type.getType(Arrays.class.getMethod("binarySearch", byte[].class, byte.class));
assertEquals("([BB)I", type.getDescriptor());
}
@Test
void testGetArgumentTypesFromMethod() throws NoSuchMethodException, SecurityException {
Type[] argumentTypes =
Type.getArgumentTypes(Arrays.class.getMethod("binarySearch", byte[].class, byte.class));
assertArrayEquals(new Type[] {Type.getType(byte[].class), Type.BYTE_TYPE}, argumentTypes);
}
@Test
void testGetReturnTypeFromMethod() throws NoSuchMethodException, SecurityException {
Type returnType =
Type.getReturnType(Arrays.class.getMethod("binarySearch", byte[].class, byte.class));
assertEquals(Type.INT_TYPE, returnType);
}
@Test
void testGetArgumentsAndReturnSizeFromDescriptor() {
assertEquals(
17 << 2,
Type.getArgumentsAndReturnSizes(
"(IZBCSDFJLI;LV;Ljava/lang/Object;[I[LI;[[Ljava/lang/Object;)V"));
assertEquals(1 << 2 | 1, Type.getArgumentsAndReturnSizes("()I"));
assertEquals(1 << 2 | 1, Type.getArgumentsAndReturnSizes("()F"));
assertEquals(1 << 2 | 2, Type.getArgumentsAndReturnSizes("()J"));
assertEquals(1 << 2 | 2, Type.getArgumentsAndReturnSizes("()D"));
assertEquals(1 << 2 | 1, Type.getArgumentsAndReturnSizes("()LD;"));
}
@Test
void testGetSort() {
assertEquals(Type.ARRAY, Type.getType("[LI;").getSort());
assertEquals(Type.ARRAY, Type.getObjectType("[LI;").getSort());
assertEquals(Type.OBJECT, Type.getType("LI;").getSort());
assertEquals(Type.OBJECT, Type.getObjectType("I").getSort());
}
@Test
void testGetDimensions() {
assertEquals(1, Type.getType("[I").getDimensions());
assertEquals(3, Type.getType("[[[LI;").getDimensions());
}
@Test
void testGetElementType() {
assertEquals(Type.INT_TYPE, Type.getType("[I").getElementType());
assertEquals(Type.getObjectType("I"), Type.getType("[[[LI;").getElementType());
}
@Test
void testGetClassName() {
assertEquals("void", Type.VOID_TYPE.getClassName());
assertEquals("boolean", Type.BOOLEAN_TYPE.getClassName());
assertEquals("char", Type.CHAR_TYPE.getClassName());
assertEquals("byte", Type.BYTE_TYPE.getClassName());
assertEquals("short", Type.SHORT_TYPE.getClassName());
assertEquals("int", Type.INT_TYPE.getClassName());
assertEquals("float", Type.FLOAT_TYPE.getClassName());
assertEquals("long", Type.LONG_TYPE.getClassName());
assertEquals("double", Type.DOUBLE_TYPE.getClassName());
assertEquals("I[]", Type.getObjectType("[LI;").getClassName());
assertEquals("java.lang.Object", Type.getObjectType("java/lang/Object").getClassName());
assertEquals("java.lang.Object", Type.getType("Ljava/lang/Object;").getClassName());
}
@Test
void testGetInternalName() {
assertEquals("[LI;", Type.getObjectType("[LI;").getInternalName());
assertEquals("java/lang/Object", Type.getObjectType("java/lang/Object").getInternalName());
assertEquals("java/lang/Object", Type.getType("Ljava/lang/Object;").getInternalName());
}
@Test
void testGetArgumentsAndReturnSize() {
Type type = Type.getType("(IZBCSDFJLI;LV;Ljava/lang/Object;[I[LI;[[Ljava/lang/Object;)V");
assertEquals(17 << 2, type.getArgumentsAndReturnSizes());
}
@Test
void testGetDescriptor() {
assertEquals("[LI;", Type.getObjectType("[LI;").getDescriptor());
assertEquals("Ljava/lang/Object;", Type.getObjectType("java/lang/Object").getDescriptor());
assertEquals("Ljava/lang/Object;", Type.getType("Ljava/lang/Object;").getDescriptor());
}
@Test
void testGetMethodDescriptor() {
assertEquals("(IJ)V", Type.getMethodDescriptor(Type.VOID_TYPE, Type.INT_TYPE, Type.LONG_TYPE));
assertEquals(
"(Ljava/lang/Object;)V",
Type.getMethodDescriptor(Type.VOID_TYPE, Type.getType("Ljava/lang/Object;")));
assertEquals(
"(Ljava/lang/Object;)V",
Type.getMethodDescriptor(Type.VOID_TYPE, Type.getObjectType("java/lang/Object")));
}
@Test
void testGetInternalNameFromClass() {
assertEquals("java/lang/Object", Type.getInternalName(Object.class));
assertEquals("[Ljava/lang/Object;", Type.getInternalName(Object[].class));
}
@Test
void testGetDescriptorFromClass() {
assertEquals("V", Type.getDescriptor(void.class));
assertEquals("Z", Type.getDescriptor(boolean.class));
assertEquals("C", Type.getDescriptor(char.class));
assertEquals("B", Type.getDescriptor(byte.class));
assertEquals("S", Type.getDescriptor(short.class));
assertEquals("I", Type.getDescriptor(int.class));
assertEquals("F", Type.getDescriptor(float.class));
assertEquals("J", Type.getDescriptor(long.class));
assertEquals("D", Type.getDescriptor(double.class));
assertEquals("Ljava/lang/Object;", Type.getDescriptor(Object.class));
assertEquals("[Ljava/lang/Object;", Type.getDescriptor(Object[].class));
assertEquals("[[Ljava/lang/Object;", Type.getDescriptor(Object[][].class));
assertEquals("[[I", Type.getDescriptor(int[][].class));
}
@Test
void testGetOpcode() {
assertEquals(BALOAD, Type.BOOLEAN_TYPE.getOpcode(IALOAD));
assertEquals(BALOAD, Type.BYTE_TYPE.getOpcode(IALOAD));
assertEquals(CALOAD, Type.CHAR_TYPE.getOpcode(IALOAD));
assertEquals(SALOAD, Type.SHORT_TYPE.getOpcode(IALOAD));
assertEquals(IALOAD, Type.INT_TYPE.getOpcode(IALOAD));
assertEquals(FALOAD, Type.FLOAT_TYPE.getOpcode(IALOAD));
assertEquals(LALOAD, Type.LONG_TYPE.getOpcode(IALOAD));
assertEquals(DALOAD, Type.DOUBLE_TYPE.getOpcode(IALOAD));
assertEquals(AALOAD, Type.getType("Ljava/lang/Object;").getOpcode(IALOAD));
assertEquals(AALOAD, Type.getObjectType("java/lang/Object").getOpcode(IALOAD));
assertEquals(AASTORE, Type.getType("Ljava/lang/Object;").getOpcode(IASTORE));
assertEquals(AASTORE, Type.getObjectType("java/lang/Object").getOpcode(IASTORE));
assertEquals(AASTORE, Type.getType("[I").getOpcode(IASTORE));
assertEquals(RETURN, Type.VOID_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(IRETURN, Type.BOOLEAN_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(IRETURN, Type.BYTE_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(IRETURN, Type.CHAR_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(IRETURN, Type.SHORT_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(IRETURN, Type.INT_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(FRETURN, Type.FLOAT_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(LRETURN, Type.LONG_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(DRETURN, Type.DOUBLE_TYPE.getOpcode(Opcodes.IRETURN));
assertEquals(ARETURN, Type.getType("Ljava/lang/Object;").getOpcode(Opcodes.IRETURN));
assertEquals(ARETURN, Type.getObjectType("java/lang/Object").getOpcode(Opcodes.IRETURN));
assertEquals(ARETURN, Type.getType("Ljava/lang/Object;").getOpcode(Opcodes.IRETURN));
assertEquals(ARETURN, Type.getObjectType("java/lang/Object").getOpcode(Opcodes.IRETURN));
assertEquals(ARETURN, Type.getType("[I").getOpcode(Opcodes.IRETURN));
assertEquals(IADD, Type.BOOLEAN_TYPE.getOpcode(IADD));
assertEquals(IADD, Type.BYTE_TYPE.getOpcode(IADD));
assertEquals(IADD, Type.CHAR_TYPE.getOpcode(IADD));
assertEquals(IADD, Type.SHORT_TYPE.getOpcode(IADD));
assertEquals(IADD, Type.INT_TYPE.getOpcode(IADD));
assertEquals(FADD, Type.FLOAT_TYPE.getOpcode(IADD));
assertEquals(LADD, Type.LONG_TYPE.getOpcode(IADD));
assertEquals(DADD, Type.DOUBLE_TYPE.getOpcode(IADD));
Class<UnsupportedOperationException> expectedException = UnsupportedOperationException.class;
assertThrows(expectedException, () -> Type.VOID_TYPE.getOpcode(IADD));
assertThrows(expectedException, () -> Type.VOID_TYPE.getOpcode(ILOAD));
assertThrows(expectedException, () -> Type.VOID_TYPE.getOpcode(IALOAD));
assertThrows(expectedException, () -> Type.getType("LI;").getOpcode(IADD));
assertThrows(expectedException, () -> Type.getType("[I").getOpcode(IADD));
assertThrows(expectedException, () -> Type.getObjectType("I").getOpcode(IADD));
assertThrows(expectedException, () -> Type.getMethodType("()V").getOpcode(IADD));
assertThrows(expectedException, () -> Type.getMethodType("()V").getOpcode(IALOAD));
}
@Test
void testEquals() {
Type nullType = null;
final boolean equalsNull = Type.getObjectType("I").equals(nullType);
final boolean equalsDifferentTypeSort = Type.getObjectType("I").equals(Type.INT_TYPE);
final boolean equalsDifferentObjectType =
Type.getObjectType("I").equals(Type.getObjectType("HI"));
final boolean equalsOtherDifferentObjectType =
Type.getObjectType("I").equals(Type.getObjectType("J"));
final boolean equalsSameType = Type.getObjectType("I").equals(Type.getType("LI;"));
final boolean equalsSameObjectType = Type.getType("LI;").equals(Type.getObjectType("I"));
final boolean equalsSamePrimitiveType = Type.INT_TYPE.equals(Type.getType("I"));
assertFalse(equalsNull);
assertFalse(equalsDifferentTypeSort);
assertFalse(equalsDifferentObjectType);
assertFalse(equalsOtherDifferentObjectType);
assertTrue(equalsSameType);
assertTrue(equalsSameObjectType);
assertTrue(equalsSamePrimitiveType);
}
@Test
void testHashcode() {
assertNotEquals(0, Type.getType("Ljava/lang/Object;").hashCode());
assertEquals(
Type.getType("Ljava/lang/Object;").hashCode(),
Type.getObjectType("java/lang/Object").hashCode());
assertNotEquals(Type.INT_TYPE.hashCode(), Type.getObjectType("I").hashCode());
}
}
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