internal void Evaluate_WithVariousValues_ReturnsExpectedResult(double membership, double expected)
{
// Arrange
var isOperator = LogicOperators.Is();
// Act
var result = isOperator.Evaluate(UnitInterval.Create(membership));
// Assert
Assert.Equal(UnitInterval.Create(expected), result);
}
internal void ToString_ReturnsExpectedString()
{
// Arrange
var waterTemp = StubLinguisticVariableFactory.WaterTemp();
var conclusion = new Conclusion(waterTemp, LogicOperators.Is(), FuzzyState.Create(WaterTemp.Cold));
// Act
var result = conclusion.ToString();
// Assert
Assert.Equal("THEN WaterTemp IS cold", result);
}
internal void ToString_ReturnsExpectedString()
{
// Arrange
var waterTemp = StubLinguisticVariableFactory.WaterTemp();
var premise = new Premise(
LogicOperators.If(),
waterTemp,
LogicOperators.Is(),
FuzzyState.Create(WaterTemp.Cold));
// Act
var result = premise.ToString();
// Assert
Assert.Equal("IF WaterTemp IS cold", result);
}
/// <summary>
/// Returns a proposition based on whether the variable IS in the given state.
/// </summary>
/// <param name="state">
/// The state.
/// </param>
/// <returns>
/// The <see cref="Premise"/>.
/// </returns>
public Proposition Is(FuzzyState state)
{
return(new Proposition(this, LogicOperators.Is(), state));
}
internal void ValidateProposition_WhenStateNotAMemberOfLinguisticVariable_Throws()
{
// Arrange
var waterTemp = StubLinguisticVariableFactory.WaterTemp();
// Invalid fuzzy state.
var fuzzyState = FuzzyState.Create(PumpSpeed.Off);
// Act
// Assert
Assert.Throws <InvalidOperationException>(() => new Proposition(waterTemp, LogicOperators.Is(), fuzzyState));
}
