32 lines
875 B
Plaintext
32 lines
875 B
Plaintext
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[source,vbnet]
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----
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<TestMethod>
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<ExpectedException(GetType(InvalidOperationException))>
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Public Sub UsingTest()
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Console.ForegroundColor = ConsoleColor.Black
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Try
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Using alert As New ConsoleAlert()
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Assert.AreEqual(ConsoleColor.Red, Console.ForegroundColor)
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Throw New InvalidOperationException()
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End Using
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Finally
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Assert.AreEqual(ConsoleColor.Black, Console.ForegroundColor) ' The exception itself is not relevant for the test.
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End Try
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End Sub
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Public NotInheritable Class ConsoleAlert
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Implements IDisposable
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Private ReadOnly previous As ConsoleColor
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Public Sub New()
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previous = Console.ForegroundColor
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Console.ForegroundColor = ConsoleColor.Red
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End Sub
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Public Sub Dispose() Implements IDisposable.Dispose
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Console.ForegroundColor = previous
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End Sub
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End Class
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----
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