/// <summary>
/// Check that a managed object has the correct members set.
/// </summary>
/// <param name="info">
/// The managed object to check.
/// </param>
private static void CheckManaged(JET_INSTANCE_INFO info)
{
Assert.AreEqual(new JET_INSTANCE {
Value = FakeInstance
}, info.hInstanceId);
Assert.AreEqual(InstanceName, info.szInstanceName);
Assert.AreEqual(2, info.cDatabases);
}
/// <summary>
/// Create a native object, convert it to managed and assert the conversion was sucessful.
/// </summary>
/// <param name="stringConverter">
/// Method used to marshal a managed string.
/// </param>
/// <param name="setter">
/// Method used to convert a native object to a managed object.
/// </param>
private static unsafe void TestSetFromNative(Func <string, IntPtr> stringConverter, Action <JET_INSTANCE_INFO, NATIVE_INSTANCE_INFO> setter)
{
JET_INSTANCE_INFO managed = new JET_INSTANCE_INFO();
IntPtr * databases = stackalloc IntPtr[2];
databases[0] = stringConverter(Database0);
databases[1] = stringConverter(Database1);
NATIVE_INSTANCE_INFO native = new NATIVE_INSTANCE_INFO
{
hInstanceId = FakeInstance,
cDatabases = new IntPtr(2),
szInstanceName = stringConverter(InstanceName),
szDatabaseFileName = databases
};
setter(managed, native);
EseInteropTestHelper.MarshalFreeHGlobal(native.szInstanceName);
EseInteropTestHelper.MarshalFreeHGlobal(databases[0]);
EseInteropTestHelper.MarshalFreeHGlobal(databases[1]);
CheckManaged(managed);
}
public void VerifySzDatabasesIsReadOnly()
{
var info = new JET_INSTANCE_INFO(JET_INSTANCE.Nil, "instance", new[] { "foo.edb" });
info.szDatabaseFileName[0] = "bar.edb";
}
/// <summary>
/// Retrieves the list of instances and databases that are part of the
/// snapshot session at any given moment.
/// </summary>
/// <param name="snapshot">The identifier of the snapshot session.</param>
/// <param name="numInstances">Returns the number of instances.</param>
/// <param name="instances">Returns information about the instances.</param>
/// <param name="grbit">Options for this call.</param>
public static void JetOSSnapshotGetFreezeInfo(
JET_OSSNAPID snapshot,
out int numInstances,
out JET_INSTANCE_INFO[] instances,
SnapshotGetFreezeInfoGrbit grbit)
{
Api.Check(Api.Impl.JetOSSnapshotGetFreezeInfo(snapshot, out numInstances, out instances, grbit));
}
public void JetInstanceInfoToString()
{
var instanceInfo = new JET_INSTANCE_INFO(JET_INSTANCE.Nil, "name", null);
Assert.AreEqual("JET_INSTANCE_INFO(name)", instanceInfo.ToString());
}
