public void Attribute_string_does_not_contain_unset_properties()
{
// Arrange
var nativeTag = new Mock <INativeTag>();
var tag = new NativeTagWrapper(nativeTag.Object);
// Act
tag.Initialize();
// Assert
nativeTag.Verify(m => m.plc_tag_create("", It.IsAny <int>()), Times.Once);
}
public void Destroy_is_called_if_initialized_and_disposed()
{
// Arrange
var nativeTag = new Mock <INativeTag>();
var tag = new NativeTagWrapper(nativeTag.Object);
// Act
tag.Initialize();
tag.Dispose();
// Assert
nativeTag.Verify(m => m.plc_tag_destroy(It.IsAny <int>()), Times.Once);
}
public void Attribute_string_formatted_correctly()
{
// Arrange
var nativeTag = new Mock <INativeTag>();
var tag = new NativeTagWrapper(nativeTag.Object)
{
ElementSize = 4,
ElementCount = 10,
PlcType = PlcType.Slc500,
Name = "TagName",
};
// Act
tag.Initialize();
// Assert
nativeTag.Verify(m => m.plc_tag_create("plc=slc500&elem_size=4&elem_count=10&name=TagName", It.IsAny <int>()), Times.Once);
}
public void Finalizer_calls_destroy()
{
// See https://www.inversionofcontrol.co.uk/unit-testing-finalizers-in-csharp/
// Arrange
var nativeTag = new Mock <INativeTag>();
Action dispose = () =>
{
// This will go out of scope after dispose() is executed, so the garbage collector will be able to call the finalizer
var tag = new NativeTagWrapper(nativeTag.Object);
tag.Initialize();
};
// Act
dispose();
GC.Collect(0, GCCollectionMode.Forced);
GC.WaitForPendingFinalizers();
// Assert
nativeTag.Verify(m => m.plc_tag_destroy(It.IsAny <int>()), Times.Once);
}