public void VerifyStatusCallbackWrapperConvertsArguments()
{
var wrapper = new StatusCallbackWrapper(
(session, snp, snt, obj) =>
{
Assert.IsInstanceOfType(obj, typeof(JET_SNPROG));
var snprog = obj as JET_SNPROG;
Assert.AreEqual(this.sesid, session);
Assert.AreEqual(JET_SNP.Restore, snp);
Assert.AreEqual(JET_SNT.Progress, snt);
Assert.IsNotNull(snprog);
Assert.AreEqual(1, snprog.cunitDone);
Assert.AreEqual(100, snprog.cunitTotal);
return(JET_err.Success);
});
var native = new NATIVE_SNPROG
{
cbStruct = checked ((uint)NATIVE_SNPROG.Size),
cunitDone = 1,
cunitTotal = 100,
};
unsafe
{
wrapper.NativeCallback(
this.sesid.Value,
(uint)JET_SNP.Restore,
(uint)JET_SNT.Progress,
new IntPtr(&native));
}
wrapper.ThrowSavedException();
}
public void VerifyNativeCallbackIsNotGarbageCollected()
{
var wrapper = new StatusCallbackWrapper(
(session, snp, snt, snprog) =>
{
throw new InvalidOperationException();
});
WeakReference weakRef = new WeakReference(wrapper.NativeCallback);
GC.Collect();
Assert.IsTrue(weakRef.IsAlive);
GC.KeepAlive(wrapper);
}
public void VerifyStatusCallbackWrapperCatchesExceptions()
{
var wrapper = new StatusCallbackWrapper(
(session, snp, snt, snprog) =>
{
throw new ArgumentException();
});
Assert.AreEqual(JET_err.CallbackFailed, wrapper.NativeCallback(this.sesid.Value, 0, 0, IntPtr.Zero));
try
{
wrapper.ThrowSavedException();
Assert.Fail("Expected an ArgumentException to be thrown");
}
catch (ArgumentException)
{
// expected
}
}
public void VerifyStatusCallbackWrapperCatchesThreadAbort()
{
var wrapper = new StatusCallbackWrapper(
(session, snp, snt, snprog) =>
{
Thread.CurrentThread.Abort();
return(JET_err.Success);
});
Assert.AreEqual(JET_err.CallbackFailed, wrapper.NativeCallback(this.sesid.Value, 0, 0, IntPtr.Zero));
try
{
wrapper.ThrowSavedException();
Assert.Fail("Expected a ThreadAbortException to be thrown");
}
catch (ThreadAbortException)
{
// expected
LibraryHelpers.ThreadResetAbort();
}
}