public void TestNullArguments()
{
ChemicalFormula formulaA = new ChemicalFormula("CO");
IHasChemicalFormula ok = null;
Assert.AreEqual("item", Assert.Throws <ArgumentNullException>(() => { formulaA.Add(ok); }).ParamName);
ChemicalFormula ok2 = null;
Assert.AreEqual("formula", Assert.Throws <ArgumentNullException>(() => { formulaA.Add(ok2); }).ParamName);
Assert.AreEqual("other", Assert.Throws <ArgumentNullException>(() => { new ChemicalFormula(ok2); }).ParamName);
Element ok3 = null;
Assert.AreEqual("element", Assert.Throws <ArgumentNullException>(() => { formulaA.AddPrincipalIsotopesOf(ok3, 0); }).ParamName);
Assert.AreEqual("item", Assert.Throws <ArgumentNullException>(() => { formulaA.Remove(ok); }).ParamName);
Assert.AreEqual("formula", Assert.Throws <ArgumentNullException>(() => { formulaA.Remove(ok2); }).ParamName);
Assert.AreEqual("formula", Assert.Throws <ArgumentNullException>(() => { formulaA.IsSubsetOf(ok2); }).ParamName);
Assert.AreEqual("formula", Assert.Throws <ArgumentNullException>(() => { formulaA.IsSupersetOf(ok2); }).ParamName);
Assert.AreEqual("element", Assert.Throws <ArgumentNullException>(() => { formulaA.CountWithIsotopes(ok3); }).ParamName);
Assert.AreEqual("element", Assert.Throws <ArgumentNullException>(() => { formulaA.CountSpecificIsotopes(ok3, 0); }).ParamName);
Assert.IsFalse(formulaA.Equals(ok2));
IEnumerable <IHasChemicalFormula> ok4 = null;
Assert.AreEqual("formulas", Assert.Throws <ArgumentNullException>(() => { ChemicalFormula.Combine(ok4); }).ParamName);
Assert.AreEqual("element", Assert.Throws <ArgumentNullException>(() => { PeriodicTable.Add(ok3); }).ParamName);
Assert.AreEqual("formula", Assert.Throws <ArgumentNullException>(() => { new IsotopicDistribution(ok2); }).ParamName);
IHasMass ok5 = null;
Assert.AreEqual("objectWithMass", Assert.Throws <ArgumentNullException>(() => { ok5.ToMZ(0); }).ParamName);
var ok7 = new PhysicalObjectWithChemicalFormula("C");
}
