public void CalculateMegaOhmResistanceValuesTestMethod()
{
CalculateOhmValues calculateOhmValues = new CalculateOhmValues();
OhmResistance value = calculateOhmValues.CalculateOhmResistanceValues("grey", "green", "white", "white");
//Assert
Assert.AreEqual("85000.0M", value.Resistance);
Assert.AreEqual("68000.0M", value.MinResistance);
Assert.AreEqual("102000.0M", value.MaxResistance);
}
public void CalculateKiloOhmResistanceValuesTestMethod()
{
CalculateOhmValues calculateOhmValues = new CalculateOhmValues();
OhmResistance value = calculateOhmValues.CalculateOhmResistanceValues("brown", "orange", "green", "gold");
//Assert
Assert.AreEqual("1300.0K", value.Resistance);
Assert.AreEqual("1235.0K", value.MinResistance);
Assert.AreEqual("1365.0K", value.MaxResistance);
}
public void CalculateSmallOhmResistanceValuesTestMethod()
{
CalculateOhmValues calculateOhmValues = new CalculateOhmValues();
OhmResistance value = calculateOhmValues.CalculateOhmResistanceValues("red", "green", "silver", "violet");
//Assert
Assert.AreEqual("0.25", value.Resistance);
Assert.AreEqual("0.24975", value.MinResistance);
Assert.AreEqual("0.25025", value.MaxResistance);
}
public void CalculateOhmResistanceValuesTestMethod()
{
CalculateOhmValues calculateOhmValues = new CalculateOhmValues();
OhmResistance value = calculateOhmValues.CalculateOhmResistanceValues("black", "red", "orange", "grey");
//Assert
Assert.AreEqual("2000", value.Resistance);
Assert.AreEqual("1999", value.MinResistance);
Assert.AreEqual("2001", value.MaxResistance);
}
public OhmResistance CalculateOhmValues(string bandAColor, string bandBColor, string bandCColor, string bandDColor)
{
OhmResistance resistance = new OhmResistance();
try
{
resistance = _calculateOhmValues.CalculateOhmResistanceValues(bandAColor, bandBColor, bandCColor, bandDColor);
}
catch (Exception ex)
{
_logger.LogError("Internal Server Error. " + ex.Message);
}
return(resistance);
}
/// <summary>
/// Calculates the Ohm value of a resistor based on the band colors.
/// </summary>
/// <param name="bandAColor">The color of the first figure of component value band.</param>
/// <param name="bandBColor">The color of the second significant figure band.</param>
/// <param name="bandCColor">The color of the decimal muliplier band.</param>
/// <param name="bandDColor">The color of the tolerance value band.</param>
/// <returns>resistance, minimum resistance, maximum resistance in ohms</returns>
public OhmResistance CalculateOhmResistanceValues(string bandAColor, string bandBColor, string bandCColor, string bandDColor)
{
int value = Convert.ToInt32(string.Format("{0}{1}", _resistorBands.BandAAndB[bandAColor], _resistorBands.BandAAndB[bandBColor]));
int multiplier = _resistorBands.Multiplier[bandCColor];
double tolerance = _resistorBands.Tolerance[bandDColor];
double resistance = value * Math.Pow(10, multiplier);
double minReistance = resistance * (1 - tolerance);
double maxResistance = resistance * (1 + tolerance);
OhmResistance ohmResistance = new OhmResistance
{
Resistance = FormatResistanceValuesUtility.FormatValue(resistance),
MinResistance = FormatResistanceValuesUtility.FormatValue(minReistance),
MaxResistance = FormatResistanceValuesUtility.FormatValue(maxResistance)
};
return(ohmResistance);
}
