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KotlinCoroutineFilterTest.java
453 lines (383 loc) · 14.7 KB
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KotlinCoroutineFilterTest.java
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/*******************************************************************************
* Copyright (c) 2009, 2020 Mountainminds GmbH & Co. KG and Contributors
* This program and the accompanying materials are made available under
* the terms of the Eclipse Public License 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Evgeny Mandrikov - initial API and implementation
*
*******************************************************************************/
package org.jacoco.core.internal.analysis.filter;
import org.jacoco.core.internal.instr.InstrSupport;
import org.junit.Test;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.tree.MethodNode;
/**
* Unit test for {@link KotlinCoroutineFilter}.
*/
public class KotlinCoroutineFilterTest extends FilterTestBase {
private final IFilter filter = new KotlinCoroutineFilter();
@Test
public void should_filter_suspending_lambdas_generated_by_Kotlin_1_3_30() {
final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
"invokeSuspend", "(Ljava/lang/Object;)Ljava/lang/Object;", null,
null);
context.classAnnotations
.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
m.visitLabel(new Label());
final Range range1 = new Range();
range1.fromInclusive = m.instructions.getLast();
m.visitMethodInsn(Opcodes.INVOKESTATIC,
"kotlin/coroutines/intrinsics/IntrinsicsKt",
"getCOROUTINE_SUSPENDED", "()Ljava/lang/Object;", false);
m.visitVarInsn(Opcodes.ASTORE, 4);
m.visitVarInsn(Opcodes.ALOAD, 0);
// line of "runBlocking"
m.visitFieldInsn(Opcodes.GETFIELD, "Target", "label", "I");
final Label dflt = new Label();
final Label state0 = new Label();
final Label state1 = new Label();
m.visitTableSwitchInsn(0, 1, dflt, state0, state1);
m.visitLabel(state0);
{
m.visitVarInsn(Opcodes.ALOAD, 1);
m.visitMethodInsn(Opcodes.INVOKESTATIC, "kotlin/ResultKt",
"throwOnFailure", "(Ljava/lang/Object;)V", false);
range1.toInclusive = m.instructions.getLast();
}
// line before "suspendingFunction"
m.visitInsn(Opcodes.NOP);
// line of "suspendingFunction"
m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "", "suspendingFunction",
"(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", false);
m.visitInsn(Opcodes.DUP);
final Range range2 = new Range();
range2.fromInclusive = m.instructions.getLast();
m.visitVarInsn(Opcodes.ALOAD, 4);
final Label continuationLabelAfterLoadedResult = new Label();
m.visitJumpInsn(Opcodes.IF_ACMPNE, continuationLabelAfterLoadedResult);
// line of "runBlocking"
m.visitVarInsn(Opcodes.ALOAD, 4);
m.visitInsn(Opcodes.ARETURN);
m.visitLabel(state1);
m.visitVarInsn(Opcodes.ALOAD, 0);
m.visitFieldInsn(Opcodes.GETFIELD, "Target", "I$0", "I");
m.visitVarInsn(Opcodes.ISTORE, 3);
{
m.visitVarInsn(Opcodes.ALOAD, 1);
m.visitMethodInsn(Opcodes.INVOKESTATIC, "kotlin/ResultKt",
"throwOnFailure", "(Ljava/lang/Object;)V", false);
}
m.visitVarInsn(Opcodes.ALOAD, 1);
range2.toInclusive = m.instructions.getLast();
m.visitLabel(continuationLabelAfterLoadedResult);
// line after "suspendingFunction"
m.visitInsn(Opcodes.NOP);
m.visitInsn(Opcodes.ARETURN);
m.visitLabel(dflt);
final Range range0 = new Range();
range0.fromInclusive = m.instructions.getLast();
m.visitTypeInsn(Opcodes.NEW, "java/lang/IllegalStateException");
m.visitInsn(Opcodes.DUP);
m.visitLdcInsn("call to 'resume' before 'invoke' with coroutine");
m.visitMethodInsn(Opcodes.INVOKESPECIAL,
"java/lang/IllegalStateException", "<init>",
"(Ljava/lang/String;)V", false);
m.visitInsn(Opcodes.ATHROW);
range0.toInclusive = m.instructions.getLast();
filter.filter(m, context, output);
assertIgnored(range0, range1, range2);
}
/**
* <pre>
* runBlocking {
* val x = 42
* nop(x)
* suspendingFunction()
* nop(x)
* }
* </pre>
*/
@Test
public void should_filter_suspending_lambdas() {
final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
"invokeSuspend", "(Ljava/lang/Object;)Ljava/lang/Object;", null,
null);
context.classAnnotations
.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
m.visitLabel(new Label());
final Range range1 = new Range();
range1.fromInclusive = m.instructions.getLast();
m.visitMethodInsn(Opcodes.INVOKESTATIC,
"kotlin/coroutines/intrinsics/IntrinsicsKt",
"getCOROUTINE_SUSPENDED", "()Ljava/lang/Object;", false);
m.visitVarInsn(Opcodes.ASTORE, 4);
m.visitVarInsn(Opcodes.ALOAD, 0);
// line of "runBlocking"
m.visitFieldInsn(Opcodes.GETFIELD, "Target", "label", "I");
final Label dflt = new Label();
final Label state0 = new Label();
final Label state1 = new Label();
m.visitTableSwitchInsn(0, 1, dflt, state0, state1);
m.visitLabel(state0);
{
m.visitVarInsn(Opcodes.ALOAD, 1);
m.visitInsn(Opcodes.DUP);
m.visitTypeInsn(Opcodes.INSTANCEOF, "kotlin/Result$Failure");
Label label = new Label();
m.visitJumpInsn(Opcodes.IFEQ, label);
m.visitTypeInsn(Opcodes.CHECKCAST, "kotlin/Result$Failure");
m.visitFieldInsn(Opcodes.GETFIELD, "kotlin/Result$Failure",
"exception", "Ljava/lang/Throwable");
m.visitInsn(Opcodes.ATHROW);
m.visitInsn(Opcodes.POP);
range1.toInclusive = m.instructions.getLast();
m.visitLabel(label);
}
// line before "suspendingFunction"
m.visitInsn(Opcodes.NOP);
// line of "suspendingFunction"
m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "", "suspendingFunction",
"(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", false);
m.visitInsn(Opcodes.DUP);
final Range range2 = new Range();
range2.fromInclusive = m.instructions.getLast();
m.visitVarInsn(Opcodes.ALOAD, 4);
final Label continuationLabelAfterLoadedResult = new Label();
m.visitJumpInsn(Opcodes.IF_ACMPNE, continuationLabelAfterLoadedResult);
// line of "runBlocking"
m.visitVarInsn(Opcodes.ALOAD, 4);
m.visitInsn(Opcodes.ARETURN);
m.visitLabel(state1);
m.visitVarInsn(Opcodes.ALOAD, 0);
m.visitFieldInsn(Opcodes.GETFIELD, "Target", "I$0", "I");
m.visitVarInsn(Opcodes.ISTORE, 3);
{
m.visitVarInsn(Opcodes.ALOAD, 1);
m.visitInsn(Opcodes.DUP);
m.visitTypeInsn(Opcodes.INSTANCEOF, "kotlin/Result$Failure");
final Label label = new Label();
m.visitJumpInsn(Opcodes.IFEQ, label);
m.visitTypeInsn(Opcodes.CHECKCAST, "kotlin/Result$Failure");
m.visitFieldInsn(Opcodes.GETFIELD, "kotlin/Result$Failure",
"exception", "Ljava/lang/Throwable");
m.visitInsn(Opcodes.ATHROW);
m.visitInsn(Opcodes.POP);
m.visitLabel(label);
}
m.visitVarInsn(Opcodes.ALOAD, 1);
range2.toInclusive = m.instructions.getLast();
m.visitLabel(continuationLabelAfterLoadedResult);
// line after "suspendingFunction"
m.visitInsn(Opcodes.NOP);
m.visitInsn(Opcodes.ARETURN);
m.visitLabel(dflt);
final Range range0 = new Range();
range0.fromInclusive = m.instructions.getLast();
m.visitTypeInsn(Opcodes.NEW, "java/lang/IllegalStateException");
m.visitInsn(Opcodes.DUP);
m.visitLdcInsn("call to 'resume' before 'invoke' with coroutine");
m.visitMethodInsn(Opcodes.INVOKESPECIAL,
"java/lang/IllegalStateException", "<init>",
"(Ljava/lang/String;)V", false);
m.visitInsn(Opcodes.ATHROW);
range0.toInclusive = m.instructions.getLast();
filter.filter(m, context, output);
assertIgnored(range0, range1, range2);
}
/**
* <pre>
* suspend fun example() {
* suspendingFunction()
* nop()
* }
* </pre>
*/
@Test
public void should_filter_suspending_functions() {
final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION,
Opcodes.ACC_STATIC, "example",
"(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", null,
null);
context.classAnnotations
.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
final int continuationArgumentIndex = 0;
final int continuationIndex = 2;
m.visitVarInsn(Opcodes.ALOAD, continuationArgumentIndex);
final Range range1 = new Range();
range1.fromInclusive = m.instructions.getLast();
m.visitTypeInsn(Opcodes.INSTANCEOF, "ExampleKt$example$1");
final Label createStateInstance = new Label();
m.visitJumpInsn(Opcodes.IFEQ, createStateInstance);
m.visitVarInsn(Opcodes.ALOAD, continuationArgumentIndex);
m.visitTypeInsn(Opcodes.CHECKCAST, "ExampleKt$example$1");
m.visitVarInsn(Opcodes.ASTORE, continuationIndex);
m.visitVarInsn(Opcodes.ALOAD, continuationIndex);
m.visitFieldInsn(Opcodes.GETFIELD, "ExampleKt$example$1", "label", "I");
m.visitLdcInsn(Integer.valueOf(Integer.MIN_VALUE));
m.visitInsn(Opcodes.IAND);
m.visitJumpInsn(Opcodes.IFEQ, createStateInstance);
m.visitVarInsn(Opcodes.ALOAD, continuationIndex);
m.visitInsn(Opcodes.DUP);
m.visitFieldInsn(Opcodes.GETFIELD, "ExampleKt$example$1", "label", "I");
m.visitLdcInsn(Integer.valueOf(Integer.MIN_VALUE));
m.visitInsn(Opcodes.ISUB);
m.visitFieldInsn(Opcodes.PUTFIELD, "ExampleKt$example$1", "label", "I");
final Label afterCoroutineStateCreated = new Label();
m.visitJumpInsn(Opcodes.GOTO, afterCoroutineStateCreated);
m.visitLabel(createStateInstance);
m.visitTypeInsn(Opcodes.NEW, "ExampleKt$example$1");
m.visitInsn(Opcodes.DUP);
m.visitVarInsn(Opcodes.ALOAD, continuationArgumentIndex);
m.visitMethodInsn(Opcodes.INVOKESPECIAL, "ExampleKt$example$1",
"<init>", "(Lkotlin/coroutines/Continuation;)V", false);
m.visitVarInsn(Opcodes.ASTORE, continuationIndex);
m.visitLabel(afterCoroutineStateCreated);
m.visitVarInsn(Opcodes.ALOAD, continuationIndex);
m.visitFieldInsn(Opcodes.GETFIELD, "ExampleKt$example$1", "result",
"Ljava/lang/Object;");
m.visitVarInsn(Opcodes.ASTORE, 1);
m.visitMethodInsn(Opcodes.INVOKESTATIC,
"kotlin/coroutines/intrinsics/IntrinsicsKt",
"getCOROUTINE_SUSPENDED", "()Ljava/lang/Object;", false);
// line of "fun"
m.visitVarInsn(Opcodes.ASTORE, 3);
m.visitVarInsn(Opcodes.ALOAD, continuationIndex);
m.visitFieldInsn(Opcodes.GETFIELD, "ExampleKt$example$1", "label", "I");
final Label dflt = new Label();
final Label state0 = new Label();
final Label state1 = new Label();
m.visitTableSwitchInsn(0, 1, dflt, state0, state1);
m.visitLabel(state0);
{
m.visitVarInsn(Opcodes.ALOAD, 1);
m.visitInsn(Opcodes.DUP);
m.visitTypeInsn(Opcodes.INSTANCEOF, "kotlin/Result$Failure");
Label label = new Label();
m.visitJumpInsn(Opcodes.IFEQ, label);
m.visitTypeInsn(Opcodes.CHECKCAST, "kotlin/Result$Failure");
m.visitFieldInsn(Opcodes.GETFIELD, "kotlin/Result$Failure",
"exception", "Ljava/lang/Throwable");
m.visitInsn(Opcodes.ATHROW);
m.visitInsn(Opcodes.POP);
range1.toInclusive = m.instructions.getLast();
m.visitLabel(label);
}
// line of "suspendingFunction"
m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "", "suspendingFunction",
"(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", false);
m.visitInsn(Opcodes.DUP);
final Range range2 = new Range();
range2.fromInclusive = m.instructions.getLast();
m.visitVarInsn(Opcodes.ALOAD, 3);
final Label continuationLabelAfterLoadedResult = new Label();
m.visitJumpInsn(Opcodes.IF_ACMPNE, continuationLabelAfterLoadedResult);
// line of "fun"
m.visitVarInsn(Opcodes.ALOAD, 3);
m.visitInsn(Opcodes.ARETURN);
m.visitLabel(state1);
{
m.visitVarInsn(Opcodes.ALOAD, 1);
m.visitInsn(Opcodes.DUP);
m.visitTypeInsn(Opcodes.INSTANCEOF, "kotlin/Result$Failure");
final Label label = new Label();
m.visitJumpInsn(Opcodes.IFEQ, label);
m.visitTypeInsn(Opcodes.CHECKCAST, "kotlin/Result$Failure");
m.visitFieldInsn(Opcodes.GETFIELD, "kotlin/Result$Failure",
"exception", "Ljava/lang/Throwable");
m.visitInsn(Opcodes.ATHROW);
m.visitInsn(Opcodes.POP);
m.visitLabel(label);
}
m.visitVarInsn(Opcodes.ALOAD, 1);
range2.toInclusive = m.instructions.getLast();
m.visitLabel(continuationLabelAfterLoadedResult);
// line after "suspendingFunction"
m.visitInsn(Opcodes.NOP);
m.visitInsn(Opcodes.ARETURN);
m.visitLabel(dflt);
final Range range0 = new Range();
range0.fromInclusive = m.instructions.getLast();
m.visitTypeInsn(Opcodes.NEW, "java/lang/IllegalStateException");
m.visitInsn(Opcodes.DUP);
m.visitLdcInsn("call to 'resume' before 'invoke' with coroutine");
m.visitMethodInsn(Opcodes.INVOKESPECIAL,
"java/lang/IllegalStateException", "<init>",
"(Ljava/lang/String;)V", false);
m.visitInsn(Opcodes.ATHROW);
range0.toInclusive = m.instructions.getLast();
filter.filter(m, context, output);
assertIgnored(range0, range1, range2);
}
/**
* <pre>
* suspend fun example(b: Boolean) {
* if (b)
* suspendingFunction()
* else
* suspendingFunction()
* }
* </pre>
*/
@Test
public void should_filter_suspending_functions_with_tail_call_optimization() {
final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
"example",
"(ZLkotlin/coroutines/Continuation;)Ljava/lang/Object;", null,
null);
context.classAnnotations
.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
final Label exit = new Label();
m.visitVarInsn(Opcodes.ILOAD, 1);
final Label next = new Label();
m.visitJumpInsn(Opcodes.IFEQ, next);
m.visitVarInsn(Opcodes.ALOAD, 0);
m.visitVarInsn(Opcodes.ALOAD, 2);
m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "", "suspendingFunction",
"(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", false);
final Range range1 = new Range();
{
m.visitInsn(Opcodes.DUP);
range1.fromInclusive = m.instructions.getLast();
m.visitMethodInsn(Opcodes.INVOKESTATIC,
"kotlin/coroutines/intrinsics/IntrinsicsKt",
"getCOROUTINE_SUSPENDED", "()Ljava/lang/Object;", false);
final Label label = new Label();
m.visitJumpInsn(Opcodes.IF_ACMPNE, label);
m.visitInsn(Opcodes.ARETURN);
m.visitLabel(label);
m.visitInsn(Opcodes.POP);
range1.toInclusive = m.instructions.getLast();
}
m.visitJumpInsn(Opcodes.GOTO, exit);
m.visitLabel(next);
m.visitVarInsn(Opcodes.ALOAD, 0);
m.visitVarInsn(Opcodes.ALOAD, 2);
m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "", "suspendingFunction",
"(Lkotlin/coroutines/Continuation;)Ljava/lang/Object;", false);
final Range range2 = new Range();
{
m.visitInsn(Opcodes.DUP);
range2.fromInclusive = m.instructions.getLast();
m.visitMethodInsn(Opcodes.INVOKESTATIC,
"kotlin/coroutines/intrinsics/IntrinsicsKt",
"getCOROUTINE_SUSPENDED", "()Ljava/lang/Object;", false);
final Label label = new Label();
m.visitJumpInsn(Opcodes.IF_ACMPNE, label);
m.visitInsn(Opcodes.ARETURN);
m.visitLabel(label);
m.visitInsn(Opcodes.POP);
range2.toInclusive = m.instructions.getLast();
}
m.visitLabel(exit);
m.visitFieldInsn(Opcodes.GETSTATIC, "kotlin/Unit", "INSTANCE",
"Lkotlin/Unit;");
m.visitInsn(Opcodes.ARETURN);
filter.filter(m, context, output);
assertIgnored(range1, range2);
}
}