// Unit test of annotations handler class
private static void TestSpectrumPeakAnnotations()
{
var noNote = SpectrumPeakAnnotation.Create(new CustomIon(null, Adduct.FromChargeNoMass(-2), 100, 101, "noNote"), null);
var noName = SpectrumPeakAnnotation.Create(new CustomIon(null, Adduct.FromChargeNoMass(-2), 100, 101, null), "noted");
var fullIon = new CustomIon("C12H5O3", Adduct.FromStringAssumeChargeOnly("M-H2O+"), null, null, "full");
var full = SpectrumPeakAnnotation.Create(fullIon, "noted");
var fullToo = SpectrumPeakAnnotation.Create(fullIon, "noted");
var nameOnlyTab = SpectrumPeakAnnotation.Create(new CustomIon(null, Adduct.FromChargeNoMass(-2), 100, 101, "test\ttabs"), "noted"); // Check tab escape
var fullIonTabs = new CustomIon("C12H5", Adduct.FromChargeNoMass(-2), null, null, "full\ttabs");
var tabbedFull = SpectrumPeakAnnotation.Create(fullIonTabs, "noted\ttabs"); // Check tab escape
Assume.AreEqual(full, fullToo);
Assume.AreNotEqual(full, tabbedFull);
var tests = new List <List <SpectrumPeakAnnotation> >
{
new List <SpectrumPeakAnnotation> {
noNote, noName, full
},
new List <SpectrumPeakAnnotation> {
fullToo, nameOnlyTab, tabbedFull
}
};
var cached = SpectrumPeakAnnotation.ToCacheFormat(tests);
var roundtrip = SpectrumPeakAnnotation.FromCacheFormat(cached);
int i = 0;
foreach (var annotsPerPeak in tests)
{
Assume.IsTrue(CollectionUtil.EqualsDeep(annotsPerPeak, roundtrip[i++]));
}
}
public void DoFullScanSettingsTest(RefinementSettings.ConvertToSmallMoleculesMode asSmallMolecules,
out List <SrmDocument> docCheckPoints)
{
docCheckPoints = new List <SrmDocument>();
var doc0 = ResultsUtil.DeserializeDocument("MultiLabel.sky", GetType());
var refine = new RefinementSettings();
var docSM = refine.ConvertToSmallMolecules(doc0, ".", asSmallMolecules);
docCheckPoints.Add(docSM);
Assert.IsFalse(docSM.MoleculeTransitionGroups.Any(nodeGroup => nodeGroup.IsotopeDist != null));
AssertEx.Serializable(docSM, AssertEx.Cloned);
double c13Delta = BioMassCalc.MONOISOTOPIC.GetMass(BioMassCalc.C13) -
BioMassCalc.MONOISOTOPIC.GetMass(BioMassCalc.C);
double n15Delta = BioMassCalc.MONOISOTOPIC.GetMass(BioMassCalc.N15) -
BioMassCalc.MONOISOTOPIC.GetMass(BioMassCalc.N);
// Verify isotope distributions calculated when MS1 filtering enabled
var enrichments = IsotopeEnrichmentsList.DEFAULT;
var docIsotopes = docSM.ChangeSettings(docSM.Settings.ChangeTransitionFullScan(fs =>
fs.ChangePrecursorIsotopes(FullScanPrecursorIsotopes.Count, 3, enrichments)));
docCheckPoints.Add(docIsotopes);
Assert.AreEqual(FullScanMassAnalyzerType.tof,
docIsotopes.Settings.TransitionSettings.FullScan.PrecursorMassAnalyzer);
Assert.IsFalse(docIsotopes.MoleculeTransitionGroups.Any(nodeGroup => nodeGroup.IsotopeDist == null));
foreach (var nodeGroup in docIsotopes.MoleculeTransitionGroups)
{
Assert.AreEqual(3, nodeGroup.Children.Count);
var isotopePeaks = nodeGroup.IsotopeDist;
Assert.IsNotNull(isotopePeaks);
Assert.IsTrue(nodeGroup.HasIsotopeDist);
// The peaks should always includ at least M-1
Assume.IsTrue(isotopePeaks.MassIndexToPeakIndex(0) > 0);
// Within 2.5% of 100% of the entire isotope distribution
Assert.AreEqual(1.0, isotopePeaks.ExpectedProportions.Sum(), 0.025);
// Precursor mass and m/z values are expected to match exactly (well, within XML roundtrip accuracy anyway)
Assert.AreEqual(nodeGroup.PrecursorMz, nodeGroup.IsotopeDist.GetMZI(0), SequenceMassCalc.MassTolerance);
Assert.AreEqual(nodeGroup.PrecursorMz, nodeGroup.TransitionGroup.IsCustomIon ?
BioMassCalc.CalculateIonMz(nodeGroup.IsotopeDist.GetMassI(0),
nodeGroup.TransitionGroup.PrecursorAdduct.Unlabeled) :
SequenceMassCalc.GetMZ(nodeGroup.IsotopeDist.GetMassI(0),
nodeGroup.TransitionGroup.PrecursorAdduct), SequenceMassCalc.MassTolerance);
// Check isotope distribution masses
for (int i = 1; i < isotopePeaks.CountPeaks; i++)
{
int massIndex = isotopePeaks.PeakIndexToMassIndex(i);
Assert.IsTrue(isotopePeaks.GetMZI(massIndex - 1) < isotopePeaks.GetMZI(massIndex));
double massDelta = GetMassDelta(isotopePeaks, massIndex);
if (nodeGroup.TransitionGroup.LabelType.IsLight)
{
// All positive should be close to 13C - C, and 0 should be the same as the next delta
double expectedDelta = (massIndex > 0 ? c13Delta : GetMassDelta(isotopePeaks, massIndex + 1));
Assert.AreEqual(expectedDelta, massDelta, 0.001);
}
else if (nodeGroup.TransitionGroup.LabelType.Name.Contains("15N"))
{
// All positive should be close to 13C, and all negative 15N
double expectedDelta = (massIndex > 0 ? c13Delta : n15Delta);
Assert.AreEqual(expectedDelta, massDelta, 0.0015);
}
else if (massIndex == 0)
{
double expectedDelta = (isotopePeaks.GetProportionI(massIndex - 1) == 0
? GetMassDelta(isotopePeaks, massIndex + 1)
: 1.0017);
Assert.AreEqual(expectedDelta, massDelta, 0.001);
}
else
{
Assert.AreEqual(c13Delta, massDelta, 0.001);
}
}
}
AssertEx.Serializable(docIsotopes, AssertEx.Cloned);
// Narrow the resolution, and verify that predicted proportion of the isotope
// distribution captured is reduced for all precursors
var docIsotopesFt = docIsotopes.ChangeSettings(docIsotopes.Settings.ChangeTransitionFullScan(fs =>
fs.ChangePrecursorResolution(FullScanMassAnalyzerType.ft_icr, 500 * 1000, 400)));
docCheckPoints.Add(docIsotopesFt);
var tranGroupsOld = docIsotopes.MoleculeTransitionGroups.ToArray();
var tranGroupsNew = docIsotopesFt.MoleculeTransitionGroups.ToArray();
Assume.AreEqual(tranGroupsOld.Length, tranGroupsNew.Length);
for (int i = 0; i < tranGroupsOld.Length; i++)
{
Assert.AreNotSame(tranGroupsOld[i], tranGroupsNew[i]);
Assert.AreNotSame(tranGroupsOld[i].IsotopeDist, tranGroupsNew[i].IsotopeDist);
Assert.IsTrue(tranGroupsOld[i].IsotopeDist.ExpectedProportions.Sum() >
tranGroupsNew[i].IsotopeDist.ExpectedProportions.Sum());
}
// Use Min % of base peak and verify variation in transitions used
const float minPercent1 = 10;
var docIsotopesP1 = docIsotopes.ChangeSettings(docIsotopes.Settings.ChangeTransitionFullScan(fs =>
fs.ChangePrecursorIsotopes(FullScanPrecursorIsotopes.Percent, minPercent1, enrichments)));
docCheckPoints.Add(docIsotopesP1);
tranGroupsNew = docIsotopesP1.MoleculeTransitionGroups.ToArray();
int maxTran = 0;
for (int i = 0; i < tranGroupsOld.Length; i++)
{
// Isotope distributions should not have changed
var isotopePeaks = tranGroupsNew[i].IsotopeDist;
Assert.AreSame(tranGroupsOld[i].IsotopeDist, isotopePeaks);
// Expected transitions should be present
maxTran = Math.Max(maxTran, tranGroupsNew[i].Children.Count);
foreach (TransitionDocNode nodeTran in tranGroupsNew[i].Children)
{
int massIndex = nodeTran.Transition.MassIndex;
Assume.IsTrue(minPercent1 <= isotopePeaks.GetProportionI(massIndex) * 100.0 / isotopePeaks.BaseMassPercent);
}
}
Assume.AreEqual(5, maxTran);
AssertEx.Serializable(docIsotopesP1, AssertEx.Cloned); // Express any failure in terms of XML diffs
// Use 10%, and check that 15N modifications all have M-1
const float minPercent2 = 5;
var docIsotopesP2 = docIsotopesP1.ChangeSettings(docIsotopesP1.Settings.ChangeTransitionFullScan(fs =>
fs.ChangePrecursorIsotopes(FullScanPrecursorIsotopes.Percent, minPercent2, enrichments)));
docCheckPoints.Add(docIsotopesP2);
foreach (var nodeGroup in docIsotopesP2.MoleculeTransitionGroups)
{
var firstChild = (TransitionDocNode)nodeGroup.Children[0];
if (nodeGroup.TransitionGroup.LabelType.Name.EndsWith("15N"))
{
Assume.AreEqual(-1, firstChild.Transition.MassIndex);
}
else
{
Assume.AreNotEqual(-1, firstChild.Transition.MassIndex);
}
}
AssertEx.Serializable(docIsotopesP2, AssertEx.Cloned);
// Use lower enrichment of 13C, and verify that this add M-1 for 13C labeled precursors
var enrichmentsLow13C = enrichments.ChangeEnrichment(new IsotopeEnrichmentItem(BioMassCalc.C13, 0.9));
var docIsotopesLow13C = docIsotopesP1.ChangeSettings(docIsotopesP1.Settings.ChangeTransitionFullScan(fs =>
fs.ChangePrecursorIsotopes(FullScanPrecursorIsotopes.Percent, minPercent2, enrichmentsLow13C)));
tranGroupsNew = docIsotopesLow13C.MoleculeTransitionGroups.ToArray();
for (int i = 0; i < tranGroupsOld.Length; i++)
{
var nodeGroup = tranGroupsNew[i];
if (!Equals(nodeGroup.TransitionGroup.LabelType.Name, "heavy"))
{
Assert.AreSame(tranGroupsOld[i].IsotopeDist, nodeGroup.IsotopeDist);
}
else
{
var firstChild = (TransitionDocNode)nodeGroup.Children[0];
Assert.IsTrue(firstChild.Transition.MassIndex < 0);
}
}
AssertEx.Serializable(docIsotopesLow13C, AssertEx.Cloned); // Express any failure as XML diffs
// Use 0%, and check that everything has M-1 and lower
var enrichmentsLow = enrichmentsLow13C.ChangeEnrichment(new IsotopeEnrichmentItem(BioMassCalc.N15, 0.97));
var docIsotopesLowP0 = docIsotopesP1.ChangeSettings(docIsotopesP1.Settings.ChangeTransitionFullScan(fs =>
fs.ChangePrecursorIsotopes(FullScanPrecursorIsotopes.Percent, 0, enrichmentsLow)));
docCheckPoints.Add(docIsotopesLowP0);
foreach (var nodeGroup in docIsotopesLowP0.MoleculeTransitionGroups)
{
Assume.AreEqual(nodeGroup.IsotopeDist.CountPeaks, nodeGroup.Children.Count);
var firstChild = (TransitionDocNode)nodeGroup.Children[0];
if (nodeGroup.TransitionGroup.LabelType.IsLight)
{
Assert.AreEqual(-1, firstChild.Transition.MassIndex);
}
else
{
Assert.IsTrue(-1 > firstChild.Transition.MassIndex);
}
}
AssertEx.Serializable(docIsotopesLowP0, AssertEx.Cloned);
// Test a document with variable and heavy modifications, which caused problems for
// the original implementation
var docVariable = ResultsUtil.DeserializeDocument("HeavyVariable.sky", GetType());
Assert.IsFalse(docVariable.MoleculeTransitionGroups.Any(nodeGroup => nodeGroup.IsotopeDist == null));
foreach (var nodeGroup in docVariable.MoleculeTransitionGroups)
{
var isotopePeaks = nodeGroup.IsotopeDist;
Assert.IsNotNull(isotopePeaks);
// The peaks should always includ at least M-1
Assert.IsTrue(isotopePeaks.MassIndexToPeakIndex(0) > 0);
// Precursor mass and m/z values are expected to match exactly (well, within XML roundtrip tolerance anyway)
var mzI = nodeGroup.IsotopeDist.GetMZI(0);
Assert.AreEqual(nodeGroup.PrecursorMz, mzI, SequenceMassCalc.MassTolerance);
// Check isotope distribution masses
for (int i = 1; i < isotopePeaks.CountPeaks; i++)
{
int massIndex = isotopePeaks.PeakIndexToMassIndex(i);
Assert.IsTrue(isotopePeaks.GetMZI(massIndex - 1) < isotopePeaks.GetMZI(massIndex));
double massDelta = GetMassDelta(isotopePeaks, massIndex);
bool containsSulfur = nodeGroup.TransitionGroup.Peptide.IsCustomMolecule
? (nodeGroup.CustomMolecule.Formula.IndexOfAny("S".ToCharArray()) != -1)
: (nodeGroup.TransitionGroup.Peptide.Sequence.IndexOfAny("CM".ToCharArray()) != -1);
if (massIndex == 0)
{
double expectedDelta = (isotopePeaks.GetProportionI(massIndex - 1) == 0
? GetMassDelta(isotopePeaks, massIndex + 1)
: 1.0017);
Assert.AreEqual(expectedDelta, massDelta, 0.001);
}
else if (!containsSulfur || massIndex == 1)
{
Assert.AreEqual(c13Delta, massDelta, 0.001);
}
else
{
Assert.AreEqual(1.00075, massDelta, 0.001);
}
}
}
docCheckPoints.Add(docVariable);
}
