public void ExposePortsAddsPortsToExisting(int?internalPort1, int?externalPort1, int?internalPort2, int?externalPort2)
        {
            // Arrange
            var sut = new StartContainerOptions();

            sut.ExposePort(42, 42);

            var portMappings = new List <DockerPortMapping>
            {
                GetPortMapping(internalPort1, externalPort1),
                GetPortMapping(internalPort2, externalPort2)
            }.Where(p => p != null);

            var expectedMappings = new List <DockerPortMapping> {
                new DockerPortMapping(42, 42)
            };

            expectedMappings.AddRange(portMappings);

            // Act
            sut.ExposePorts(portMappings);

            // Assert
            sut.DockerPortMappings.Should().BeEquivalentTo(expectedMappings);
        }
        public void ExposePortAddsPortToExisting()
        {
            // Arrange
            var internalPort = 43;
            var externalPort = 44;
            var sut          = new StartContainerOptions();

            sut.ExposePorts(new [] { GetPortMapping(42, 42) });

            var expectedMappings = new [] { GetPortMapping(42, 42), GetPortMapping(internalPort, externalPort) };

            // Act
            sut.ExposePort(internalPort, externalPort);

            // Assert
            sut.DockerPortMappings.Should().BeEquivalentTo(expectedMappings);
        }