custom_axis.py

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import os
from traceback import format_exc
 
FILENAME = f"{__name__}.root"
 
 
def config():
    import GaudiConfig2.Configurables as C
    import GaudiConfig2.Configurables.Gaudi.Tests.Histograms.CustomAxis as T
 
    algs = []
    tools = []
    svcs = []
 
    Alg = T.EnumAxisAlg
    algs.append(Alg("Alg"))
 
    svcs.append(C.Gaudi.Histograming.Sink.Root(FileName=FILENAME))
    svcs.append(C.Gaudi.Monitoring.MessageSvcSink())
 
    yield from algs
    yield from tools
    yield from svcs
 
    yield C.ApplicationMgr(
        EvtMax=5,
        EvtSel="NONE",
        TopAlg=algs,
        ExtSvc=svcs,
    )
 
    # make sure the histogram file is not already there
    if os.path.exists(FILENAME):
        os.remove(FILENAME)
 
 
def check(causes, result):
    result["root_output_file"] = FILENAME
 
    if not os.path.exists(FILENAME):
        causes.append("missing histogram file")
        return False
 
    try:
        import ROOT
        f = ROOT.TFile.Open(FILENAME)
 
        h = f.Get("Alg/Categories")
        if not h:
            k = f.GetKey("Alg/Categories")
            if k:
                h = k.ReadObj()
 
        assert h, "missing histogram"
 
        if h.GetNbinsX() != 4:
            causes.append("number of bins")
            result["error"] = f"expected 4 bins, got {h.GetNbinsX()}"
            return False
 
        axis = h.GetXaxis()
        labels = list(axis.GetLabels())
        expected = ["Simple", "Complex", "Bad", "Wrong"]
        if labels != expected:
            causes.append("wrong axis labels")
            result["expected_labels"] = ", ".join(repr(l) for l in expected)
            result["found_labels"] = ", ".join(repr(l) for l in labels)
            return False
 
    except AssertionError as err:
        causes.append(str(err))
        return False
 
    except Exception as err:
        causes.append("failure reading histogram file")
        result["python_exception"] = result.Quote(format_exc())
        return False
 
    return True