93 lines
3.8 KiB
C#
93 lines
3.8 KiB
C#
using System.Collections.Concurrent;
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using Charac.Server.Connections;
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using Charac.Server.Authentication;
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namespace Charac.Server.Tests;
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public sealed class WorkspaceConnectionGateTests
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{
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[Fact]
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public void OperatorDisconnectInvalidatesControllerButKeepsOwner()
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{
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var gate = new WorkspaceConnectionGate();
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var first = Assert.IsType<ConnectionLease>(gate.Acquire(Alice).Lease);
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Assert.True(gate.DisconnectCurrent());
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Assert.False(gate.DisconnectCurrent());
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Assert.False(gate.IsCurrent(first));
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Assert.False(gate.TryDispatch(first, () => throw new Exception("Stale input was dispatched.")));
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Assert.Equal(AcquisitionStatus.OwnedByAnotherIdentity,
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gate.Acquire(new(Alice.Issuer, "bob-id")).Status);
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Assert.Equal(AcquisitionStatus.Acquired, gate.Acquire(Alice).Status);
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}
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private static readonly ExternalIdentity Alice = new("https://auth.example/application/o/workspace/", "alice-id");
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[Fact]
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public void TakeoverInvalidatesOldInputAndDisconnect()
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{
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var gate = new WorkspaceConnectionGate();
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var first = Assert.IsType<ConnectionLease>(gate.Acquire(Alice).Lease);
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Assert.Equal(AcquisitionStatus.TakeoverRequired, gate.Acquire(Alice).Status);
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var replacement = Assert.IsType<ConnectionLease>(gate.Acquire(Alice, takeover: true).Lease);
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var inputs = new List<string>();
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Assert.False(gate.TryDispatch(first, () => inputs.Add("stale")));
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Assert.False(gate.Disconnect(first));
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Assert.False(gate.CloseWorkspace(first));
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Assert.True(gate.TryDispatch(replacement, () => inputs.Add("current")));
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Assert.Equal(new[] { "current" }, inputs);
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Assert.True(replacement.Generation > first.Generation);
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}
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[Fact]
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public void DisconnectionPreservesOwnerAndAllowsOwnerToReconnect()
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{
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var gate = new WorkspaceConnectionGate();
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var lease = Assert.IsType<ConnectionLease>(gate.Acquire(Alice).Lease);
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Assert.True(gate.Disconnect(lease));
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Assert.False(gate.IsCurrent(lease));
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Assert.Equal(AcquisitionStatus.OwnedByAnotherIdentity,
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gate.Acquire(new(Alice.Issuer, "bob-id"), takeover: true).Status);
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Assert.Equal(AcquisitionStatus.Acquired, gate.Acquire(Alice).Status);
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}
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[Fact]
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public void IssuerIsPartOfIdentity()
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{
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var gate = new WorkspaceConnectionGate();
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gate.Acquire(Alice);
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Assert.Equal(AcquisitionStatus.OwnedByAnotherIdentity,
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gate.Acquire(new("https://other.example/", Alice.Subject), takeover: true).Status);
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}
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[Fact]
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public void ClosedWorkspaceCanBeAssignedToAnotherOwner()
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{
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var gate = new WorkspaceConnectionGate();
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var lease = Assert.IsType<ConnectionLease>(gate.Acquire(Alice).Lease);
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Assert.True(gate.CloseWorkspace(lease));
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Assert.Equal(AcquisitionStatus.Acquired, gate.Acquire(new(Alice.Issuer, "bob-id")).Status);
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Assert.False(gate.IsCurrent(lease));
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}
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[Fact]
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public void OnlyOneConcurrentConnectionAcquiresControl()
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{
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var gate = new WorkspaceConnectionGate();
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var results = new ConcurrentBag<AcquisitionResult>();
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Parallel.For(0, 64, _ => results.Add(gate.Acquire(Alice)));
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Assert.Single(results, result => result.Status == AcquisitionStatus.Acquired);
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Assert.Equal(63, results.Count(result => result.Status == AcquisitionStatus.TakeoverRequired));
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}
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[Fact]
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public void LeaseFromAnotherGateCannotDispatch()
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{
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var gate = new WorkspaceConnectionGate();
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var other = new WorkspaceConnectionGate();
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gate.Acquire(Alice);
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var foreign = Assert.IsType<ConnectionLease>(other.Acquire(Alice).Lease);
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Assert.False(gate.TryDispatch(foreign, () => Assert.Fail("Foreign lease dispatched input.")));
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}
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}
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