| public IsSubsetOf ( IPermission target ) : bool | ||
| target | IPermission | |
| return | bool | |
/// <include file='doc\StrongNameIdentityPermission.uex' path='docs/doc[@for="StrongNameIdentityPermission.Union"]/*' />
public override IPermission Union(IPermission target)
{
if (target == null)
{
return(this.m_publicKeyBlob != null?this.Copy() : null);
}
else if (!VerifyType(target))
{
throw new
ArgumentException(
String.Format(Environment.GetResourceString("Argument_WrongType"), this.GetType().FullName)
);
}
StrongNameIdentityPermission operand = (StrongNameIdentityPermission)target;
// Union is only defined on permissions where one is a subset of the other.
// For Union, simply return a copy of whichever contains the other.
if (operand.IsSubsetOf(this))
{
return(this.Copy());
}
else if (this.IsSubsetOf(operand))
{
return(operand.Copy());
}
else
{
return(null);
}
}
public void Union ()
{
StrongNamePublicKeyBlob blob = new StrongNamePublicKeyBlob (ecma);
StrongNameIdentityPermission snip = new StrongNameIdentityPermission (blob, "mono", new Version (1, 2, 3, 4));
StrongNameIdentityPermission union = (StrongNameIdentityPermission)snip.Union (null);
Compare (snip, union, "snip U null");
StrongNameIdentityPermission empty = new StrongNameIdentityPermission (PermissionState.None);
union = (StrongNameIdentityPermission)snip.Union (empty);
Compare (snip, union, "snip U empty");
union = (StrongNameIdentityPermission)snip.Union (snip);
Compare (snip, union, "snip U snip");
// note: can't be tested with PermissionState.Unrestricted
StrongNameIdentityPermission samePk = new StrongNameIdentityPermission (blob, null, null);
union = (StrongNameIdentityPermission)snip.Union (samePk);
#if !NET_2_0
// can't compare the properties with multiple entries
Compare (snip, union, "snip U samePk");
#endif
Assert.IsTrue (snip.IsSubsetOf (union), "snip.IsSubsetOf (union)");
union = (StrongNameIdentityPermission)samePk.Union (snip);
#if !NET_2_0
// can't compare the properties with multiple entries
Compare (snip, union, "samePk U snip");
#endif
Assert.IsTrue (samePk.IsSubsetOf (union), "snip.IsSubsetOf (union)");
}
public void IsSubsetOf_DifferentPermissions ()
{
StrongNameIdentityPermission a = new StrongNameIdentityPermission (PermissionState.None);
SecurityPermission b = new SecurityPermission (PermissionState.None);
a.IsSubsetOf (b);
}
public void IsSubsetOf_Corlib ()
{
Version fx11 = new Version (1, 0, 5000, 0);
StrongNamePublicKeyBlob blob = new StrongNamePublicKeyBlob (ecma);
StrongNameIdentityPermission granted = new StrongNameIdentityPermission (blob, "mscorlib", fx11);
StrongNameIdentityPermission demanded = new StrongNameIdentityPermission (blob, null, null);
Assert.IsTrue (demanded.IsSubsetOf (granted), "pk");
demanded = new StrongNameIdentityPermission (blob, "mscorlib", null);
Assert.IsTrue (demanded.IsSubsetOf (granted), "pk+name");
demanded = new StrongNameIdentityPermission (blob, null, fx11);
Assert.IsTrue (demanded.IsSubsetOf (granted), "pk+v");
demanded = new StrongNameIdentityPermission (blob, "mscorlib", fx11);
Assert.IsTrue (demanded.IsSubsetOf (granted), "pk+name+v");
}
public void IsSubsetOf ()
{
StrongNamePublicKeyBlob blob = new StrongNamePublicKeyBlob (ecma);
StrongNameIdentityPermission snip = new StrongNameIdentityPermission (blob, "mono", new Version (1, 2, 3, 4));
Assert.IsFalse (snip.IsSubsetOf (null), "snip.IsSubsetOf (null)");
StrongNameIdentityPermission empty = new StrongNameIdentityPermission (PermissionState.None);
Assert.IsTrue (empty.IsSubsetOf (null), "empty.IsSubsetOf (null)");
}
