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using System;
using Mono.Linker.Tests.Cases.Expectations.Assertions;
using Mono.Linker.Tests.Cases.Expectations.Metadata;
using Mono.Linker.Tests.Cases.TypeForwarding.Dependencies;
namespace Mono.Linker.Tests.Cases.TypeForwarding
{
[SetupLinkerAction ("copyused", "Attribute")]
[SetupLinkerAction ("copyused", "Forwarder")]
[SetupCompileBefore ("Forwarder.dll", new[] { "Dependencies/MyEnum.cs" })]
[SetupCompileBefore ("Attribute.dll", new[] { "Dependencies/AttributeWithEnumArgument.cs" },
defines: new[] { "INCLUDE_FORWARDER" }, references: new[] { "Forwarder.dll" })]
// After compiling the test case we then replace the reference impl with implementation + type forwarder
[SetupCompileAfter ("Implementation.dll", new[] { "Dependencies/MyEnum.cs" })]
[SetupCompileAfter ("Forwarder.dll", new[] { "Dependencies/MyEnumForwarder.cs" }, references: new[] { "Implementation.dll" })]
[KeptTypeInAssembly ("Forwarder.dll", typeof (UsedToReferenceForwarderAssembly))]
[KeptTypeInAssembly ("Implementation.dll", "Mono.Linker.Tests.Cases.TypeForwarding.Dependencies.MyEnum")]
[RemovedForwarder ("Forwarder.dll", "Mono.Linker.Tests.Cases.TypeForwarding.Dependencies.MyEnum")]
class AttributeEnumArgumentForwardedCopyUsedWithSweptForwarder
{
static void Main ()
{
// attribute enum arg typeref -> forwarder -> enum def
// copyused copyused
// The forwarder is not referenced and will be removed. This is a regression test for a case where the copyused typeref
// scope is not updated, causing an exception to be thrown when the assembly is output.
// Mark the attribute enum argument, causing cecil to read the attribute blob and resolve the typeref through the forwarder.
var _ = typeof (AttributedType);
// The attribute assembly needs to be written back with cecil for this to cause problems.
// To prevent its action from being changed to "copy", it has an unused type forwarder which gets swept.
// Reference the forwarder assembly (but without marking the forwarder) to prevent it from being removed entirely.
// This ensures that:
// - The forwarder assembly is swept and the enum forwarder is removed (invalidating the attribute argument's typeref)
// - The attribute assembly doesn't reference a removed assembly.
// Referencing a removed assembly would change its action to "save" and it would get typerefs updated (correctly), avoiding the bug
// this is trying to reproduce.
var _2 = typeof (UsedToReferenceForwarderAssembly);
}
}
}
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