# Tests of the quasiisothermaldf module
from __future__ import print_function, division
import numpy
#fiducial setup uses these
from galpy.potential import MWPotential, vcirc, omegac, epifreq, verticalfreq
from galpy.actionAngle import actionAngleAdiabatic, actionAngleStaeckel
from galpy.df import quasiisothermaldf
aAA= actionAngleAdiabatic(pot=MWPotential,c=True)
aAS= actionAngleStaeckel(pot=MWPotential,c=True,delta=0.5)

def test_pvRvT_adiabatic():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAA,cutcounter=True)
    R,z= 0.8, 0.1
    vRs= numpy.linspace(-1.,1.,21)
    vTs= numpy.linspace(0.,1.5,51)
    pvRvT= numpy.array([[qdf.pvRvT(vr,vt,R,z) for vt in vTs] for vr in vRs])
    tvR= numpy.tile(vRs,(len(vTs),1)).T
    tvT= numpy.tile(vTs,(len(vRs),1))
    mvR= numpy.sum(tvR*pvRvT)/numpy.sum(pvRvT)
    mvT= numpy.sum(tvT*pvRvT)/numpy.sum(pvRvT)
    svR= numpy.sqrt(numpy.sum(tvR**2.*pvRvT)/numpy.sum(pvRvT)-mvR**2.)
    svT= numpy.sqrt(numpy.sum(tvT**2.*pvRvT)/numpy.sum(pvRvT)-mvT**2.)
    svRvT= (numpy.sum(tvR*tvT*pvRvT)/numpy.sum(pvRvT)-mvR*mvT)/svR/svT
    assert numpy.fabs(mvR) < 0.01, 'mean vR calculated from pvRvT not equal to zero for adiabatic actions'
    assert numpy.fabs(mvT-qdf.meanvT(R,z)) < 0.01, 'mean vT calculated from pvRvT not equal to zero for adiabatic actions'
    assert numpy.fabs(numpy.log(svR)-0.5*numpy.log(qdf.sigmaR2(R,z))) < 0.01, 'sigma vR calculated from pvRvT not equal to that from sigmaR2 for adiabatic actions'
    assert numpy.fabs(numpy.log(svT)-0.5*numpy.log(qdf.sigmaT2(R,z))) < 0.01, 'sigma vT calculated from pvRvT not equal to that from sigmaT2 for adiabatic actions'
    assert numpy.fabs(svRvT) < 0.01, 'correlation between vR and vT calculated from pvRvT not equal to zero for adiabatic actions'
    return None

def test_pvRvT_staeckel():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAS,cutcounter=True)
    R,z= 0.8, 0.1
    vRs= numpy.linspace(-1.,1.,21)
    vTs= numpy.linspace(0.,1.5,51)
    pvRvT= numpy.array([[qdf.pvRvT(vr,vt,R,z) for vt in vTs] for vr in vRs])
    tvR= numpy.tile(vRs,(len(vTs),1)).T
    tvT= numpy.tile(vTs,(len(vRs),1))
    mvR= numpy.sum(tvR*pvRvT)/numpy.sum(pvRvT)
    mvT= numpy.sum(tvT*pvRvT)/numpy.sum(pvRvT)
    svR= numpy.sqrt(numpy.sum(tvR**2.*pvRvT)/numpy.sum(pvRvT)-mvR**2.)
    svT= numpy.sqrt(numpy.sum(tvT**2.*pvRvT)/numpy.sum(pvRvT)-mvT**2.)
    svRvT= (numpy.sum(tvR*tvT*pvRvT)/numpy.sum(pvRvT)-mvR*mvT)/svR/svT
    assert numpy.fabs(mvR) < 0.01, 'mean vR calculated from pvRvT not equal to zero for staeckel actions'
    assert numpy.fabs(mvT-qdf.meanvT(R,z)) < 0.01, 'mean vT calculated from pvRvT not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svR)-0.5*numpy.log(qdf.sigmaR2(R,z))) < 0.01, 'sigma vR calculated from pvRvT not equal to that from sigmaR2 for staeckel actions'
    assert numpy.fabs(numpy.log(svT)-0.5*numpy.log(qdf.sigmaT2(R,z))) < 0.01, 'sigma vT calculated from pvRvT not equal to that from sigmaT2 for staeckel actions'
    assert numpy.fabs(svRvT) < 0.01, 'correlation between vR and vT calculated from pvRvT not equal to zero for staeckel actions'
    return None

def test_pvRvT_staeckel_diffngl():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAS,cutcounter=True)
    R,z= 0.8, 0.1
    vRs= numpy.linspace(-1.,1.,21)
    vTs= numpy.linspace(0.,1.5,51)
    #ngl=10
    pvRvT= numpy.array([[qdf.pvRvT(vr,vt,R,z,ngl=10) for vt in vTs] for vr in vRs])
    tvR= numpy.tile(vRs,(len(vTs),1)).T
    tvT= numpy.tile(vTs,(len(vRs),1))
    mvR= numpy.sum(tvR*pvRvT)/numpy.sum(pvRvT)
    mvT= numpy.sum(tvT*pvRvT)/numpy.sum(pvRvT)
    svR= numpy.sqrt(numpy.sum(tvR**2.*pvRvT)/numpy.sum(pvRvT)-mvR**2.)
    svT= numpy.sqrt(numpy.sum(tvT**2.*pvRvT)/numpy.sum(pvRvT)-mvT**2.)
    svRvT= (numpy.sum(tvR*tvT*pvRvT)/numpy.sum(pvRvT)-mvR*mvT)/svR/svT
    assert numpy.fabs(mvR) < 0.01, 'mean vR calculated from pvRvT not equal to zero for staeckel actions'
    assert numpy.fabs(mvT-qdf.meanvT(R,z)) < 0.01, 'mean vT calculated from pvRvT not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svR)-0.5*numpy.log(qdf.sigmaR2(R,z))) < 0.01, 'sigma vR calculated from pvRvT not equal to that from sigmaR2 for staeckel actions'
    assert numpy.fabs(numpy.log(svT)-0.5*numpy.log(qdf.sigmaT2(R,z))) < 0.01, 'sigma vT calculated from pvRvT not equal to that from sigmaT2 for staeckel actions'
    assert numpy.fabs(svRvT) < 0.01, 'correlation between vR and vT calculated from pvRvT not equal to zero for staeckel actions'
    #ngl=24
    pvRvT= numpy.array([[qdf.pvRvT(vr,vt,R,z,ngl=40) for vt in vTs] for vr in vRs])
    mvR= numpy.sum(tvR*pvRvT)/numpy.sum(pvRvT)
    mvT= numpy.sum(tvT*pvRvT)/numpy.sum(pvRvT)
    svR= numpy.sqrt(numpy.sum(tvR**2.*pvRvT)/numpy.sum(pvRvT)-mvR**2.)
    svT= numpy.sqrt(numpy.sum(tvT**2.*pvRvT)/numpy.sum(pvRvT)-mvT**2.)
    svRvT= (numpy.sum(tvR*tvT*pvRvT)/numpy.sum(pvRvT)-mvR*mvT)/svR/svT
    assert numpy.fabs(mvR) < 0.01, 'mean vR calculated from pvRvT not equal to zero for staeckel actions'
    assert numpy.fabs(mvT-qdf.meanvT(R,z)) < 0.01, 'mean vT calculated from pvRvT not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svR)-0.5*numpy.log(qdf.sigmaR2(R,z))) < 0.01, 'sigma vR calculated from pvRvT not equal to that from sigmaR2 for staeckel actions'
    assert numpy.fabs(numpy.log(svT)-0.5*numpy.log(qdf.sigmaT2(R,z))) < 0.01, 'sigma vT calculated from pvRvT not equal to that from sigmaT2 for staeckel actions'
    assert numpy.fabs(svRvT) < 0.01, 'correlation between vR and vT calculated from pvRvT not equal to zero for staeckel actions'
    #ngl=11, shouldn't work
    try:
        pvRvT= numpy.array([[qdf.pvRvT(vr,vt,R,z,ngl=11) for vt in vTs] for vr in vRs])
    except ValueError: pass
    else: raise AssertionError('pvz w/ ngl=odd did not raise ValueError')
    return None

def test_pvTvz_adiabatic():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAA,cutcounter=True)
    R,z= 0.8, 0.1
    vTs= numpy.linspace(0.,1.5,51)
    vzs= numpy.linspace(-1.,1.,21)
    pvTvz= numpy.array([[qdf.pvTvz(vt,vz,R,z) for vt in vTs] for vz in vzs])
    tvT= numpy.tile(vTs,(len(vzs),1))
    tvz= numpy.tile(vzs,(len(vTs),1)).T
    mvz= numpy.sum(tvz*pvTvz)/numpy.sum(pvTvz)
    mvT= numpy.sum(tvT*pvTvz)/numpy.sum(pvTvz)
    svz= numpy.sqrt(numpy.sum(tvz**2.*pvTvz)/numpy.sum(pvTvz)-mvz**2.)
    svT= numpy.sqrt(numpy.sum(tvT**2.*pvTvz)/numpy.sum(pvTvz)-mvT**2.)
    svTvz= (numpy.sum(tvz*tvT*pvTvz)/numpy.sum(pvTvz)-mvz*mvT)/svz/svT
    assert numpy.fabs(mvz) < 0.01, 'mean vz calculated from pvTvz not equal to zero for adiabatic actions'
    assert numpy.fabs(mvT-qdf.meanvT(R,z)) < 0.01, 'mean vT calculated from pvTvz not equal to zero for adiabatic actions'
    assert numpy.fabs(numpy.log(svz)-0.5*numpy.log(qdf.sigmaz2(R,z))) < 0.01, 'sigma vz calculated from pvTvz not equal to that from sigmaz2 for adiabatic actions'
    assert numpy.fabs(numpy.log(svT)-0.5*numpy.log(qdf.sigmaT2(R,z))) < 0.01, 'sigma vT calculated from pvTvz not equal to that from sigmaT2 for adiabatic actions'
    assert numpy.fabs(svTvz) < 0.01, 'correlation between vz and vT calculated from pvTvz not equal to zero for adiabatic actions'
    return None

def test_pvTvz_staeckel():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAS,cutcounter=True)
    R,z= 0.8, 0.1
    vzs= numpy.linspace(-1.,1.,21)
    vTs= numpy.linspace(0.,1.5,51)
    pvTvz= numpy.array([[qdf.pvTvz(vt,vz,R,z) for vt in vTs] for vz in vzs])
    tvz= numpy.tile(vzs,(len(vTs),1)).T
    tvT= numpy.tile(vTs,(len(vzs),1))
    mvz= numpy.sum(tvz*pvTvz)/numpy.sum(pvTvz)
    mvT= numpy.sum(tvT*pvTvz)/numpy.sum(pvTvz)
    svz= numpy.sqrt(numpy.sum(tvz**2.*pvTvz)/numpy.sum(pvTvz)-mvz**2.)
    svT= numpy.sqrt(numpy.sum(tvT**2.*pvTvz)/numpy.sum(pvTvz)-mvT**2.)
    svTvz= (numpy.sum(tvz*tvT*pvTvz)/numpy.sum(pvTvz)-mvz*mvT)/svz/svT
    assert numpy.fabs(mvz) < 0.01, 'mean vz calculated from pvTvz not equal to zero for staeckel actions'
    assert numpy.fabs(mvT-qdf.meanvT(R,z)) < 0.01, 'mean vT calculated from pvTvz not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svz)-0.5*numpy.log(qdf.sigmaz2(R,z))) < 0.01, 'sigma vz calculated from pvTvz not equal to that from sigmaz2 for staeckel actions'
    assert numpy.fabs(numpy.log(svT)-0.5*numpy.log(qdf.sigmaT2(R,z))) < 0.01, 'sigma vT calculated from pvTvz not equal to that from sigmaT2 for staeckel actions'
    assert numpy.fabs(svTvz) < 0.01, 'correlation between vz and vT calculated from pvTvz not equal to zero for staeckel actions'
    return None

def test_pvTvz_staeckel_diffngl():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAS,cutcounter=True)
    R,z= 0.8, 0.1
    vzs= numpy.linspace(-1.,1.,21)
    vTs= numpy.linspace(0.,1.5,51)
    #ngl=10
    pvTvz= numpy.array([[qdf.pvTvz(vt,vz,R,z,ngl=10) for vt in vTs] for vz in vzs])
    tvz= numpy.tile(vzs,(len(vTs),1)).T
    tvT= numpy.tile(vTs,(len(vzs),1))
    mvz= numpy.sum(tvz*pvTvz)/numpy.sum(pvTvz)
    mvT= numpy.sum(tvT*pvTvz)/numpy.sum(pvTvz)
    svz= numpy.sqrt(numpy.sum(tvz**2.*pvTvz)/numpy.sum(pvTvz)-mvz**2.)
    svT= numpy.sqrt(numpy.sum(tvT**2.*pvTvz)/numpy.sum(pvTvz)-mvT**2.)
    svTvz= (numpy.sum(tvz*tvT*pvTvz)/numpy.sum(pvTvz)-mvz*mvT)/svz/svT
    assert numpy.fabs(mvz) < 0.01, 'mean vz calculated from pvTvz not equal to zero for staeckel actions'
    assert numpy.fabs(mvT-qdf.meanvT(R,z)) < 0.01, 'mean vT calculated from pvTvz not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svz)-0.5*numpy.log(qdf.sigmaz2(R,z))) < 0.01, 'sigma vz calculated from pvTvz not equal to that from sigmaz2 for staeckel actions'
    assert numpy.fabs(numpy.log(svT)-0.5*numpy.log(qdf.sigmaT2(R,z))) < 0.01, 'sigma vT calculated from pvTvz not equal to that from sigmaT2 for staeckel actions'
    assert numpy.fabs(svTvz) < 0.01, 'correlation between vz and vT calculated from pvTvz not equal to zero for staeckel actions'
    #ngl=24
    pvTvz= numpy.array([[qdf.pvTvz(vt,vz,R,z,ngl=40) for vt in vTs] for vz in vzs])
    mvz= numpy.sum(tvz*pvTvz)/numpy.sum(pvTvz)
    mvT= numpy.sum(tvT*pvTvz)/numpy.sum(pvTvz)
    svz= numpy.sqrt(numpy.sum(tvz**2.*pvTvz)/numpy.sum(pvTvz)-mvz**2.)
    svT= numpy.sqrt(numpy.sum(tvT**2.*pvTvz)/numpy.sum(pvTvz)-mvT**2.)
    svTvz= (numpy.sum(tvz*tvT*pvTvz)/numpy.sum(pvTvz)-mvz*mvT)/svz/svT
    assert numpy.fabs(mvz) < 0.01, 'mean vz calculated from pvTvz not equal to zero for staeckel actions'
    assert numpy.fabs(mvT-qdf.meanvT(R,z)) < 0.01, 'mean vT calculated from pvTvz not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svz)-0.5*numpy.log(qdf.sigmaz2(R,z))) < 0.01, 'sigma vz calculated from pvTvz not equal to that from sigmaz2 for staeckel actions'
    assert numpy.fabs(numpy.log(svT)-0.5*numpy.log(qdf.sigmaT2(R,z))) < 0.01, 'sigma vT calculated from pvTvz not equal to that from sigmaT2 for staeckel actions'
    assert numpy.fabs(svTvz) < 0.01, 'correlation between vz and vT calculated from pvTvz not equal to zero for staeckel actions'
    #ngl=11, shouldn't work
    try:
        pvTvz= numpy.array([[qdf.pvTvz(vt,vz,R,z,ngl=11) for vt in vTs] for vz in vzs])
    except ValueError: pass
    else: raise AssertionError('pvz w/ ngl=odd did not raise ValueError')
    return None

def test_pvRvz_adiabatic():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAA,cutcounter=True)
    R,z= 0.8, 0.1
    vRs= numpy.linspace(-1.,1.,21)
    vzs= numpy.linspace(-1.,1.,21)
    pvRvz= numpy.array([[qdf.pvRvz(vr,vz,R,z) for vz in vzs] for vr in vRs])
    tvR= numpy.tile(vRs,(len(vzs),1)).T
    tvz= numpy.tile(vzs,(len(vRs),1))
    mvR= numpy.sum(tvR*pvRvz)/numpy.sum(pvRvz)
    mvz= numpy.sum(tvz*pvRvz)/numpy.sum(pvRvz)
    svR= numpy.sqrt(numpy.sum(tvR**2.*pvRvz)/numpy.sum(pvRvz)-mvR**2.)
    svz= numpy.sqrt(numpy.sum(tvz**2.*pvRvz)/numpy.sum(pvRvz)-mvz**2.)
    svRvz= (numpy.sum(tvR*tvz*pvRvz)/numpy.sum(pvRvz)-mvR*mvz)/svR/svz
    sR2= qdf.sigmaR2(R,z) #direct calculation
    sz2= qdf.sigmaz2(R,z)
    assert numpy.fabs(mvR) < 0.01, 'mean vR calculated from pvRvz not equal to zero for adiabatic actions'
    assert numpy.fabs(mvz) < 0.01, 'mean vz calculated from pvRvz not equal to zero for adiabatic actions'
    assert numpy.fabs(numpy.log(svR)-0.5*numpy.log(sR2)) < 0.01, 'sigma vR calculated from pvRvz not equal to that from sigmaR2 for adiabatic actions'
    assert numpy.fabs(numpy.log(svz)-0.5*numpy.log(sz2)) < 0.01, 'sigma vz calculated from pvRvz not equal to that from sigmaz2 for adiabatic actions'
    assert numpy.fabs(svRvz-qdf.sigmaRz(R,z)/numpy.sqrt(sR2*sz2)) < 0.01, 'correlation between vR and vz calculated from pvRvz not equal to zero for adiabatic actions'
    return None

def test_pvRvz_staeckel():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAS,cutcounter=True)
    R,z= 0.8, 0.1
    vRs= numpy.linspace(-1.,1.,21)
    vzs= numpy.linspace(-1.,1.,21)
    pvRvz= numpy.array([[qdf.pvRvz(vr,vz,R,z) for vz in vzs] for vr in vRs])
    tvR= numpy.tile(vRs,(len(vzs),1)).T
    tvz= numpy.tile(vzs,(len(vRs),1))
    mvR= numpy.sum(tvR*pvRvz)/numpy.sum(pvRvz)
    mvz= numpy.sum(tvz*pvRvz)/numpy.sum(pvRvz)
    svR= numpy.sqrt(numpy.sum(tvR**2.*pvRvz)/numpy.sum(pvRvz)-mvR**2.)
    svz= numpy.sqrt(numpy.sum(tvz**2.*pvRvz)/numpy.sum(pvRvz)-mvz**2.)
    svRvz= (numpy.sum(tvR*tvz*pvRvz)/numpy.sum(pvRvz)-mvR*mvz)/svR/svz
    sR2= qdf.sigmaR2(R,z) #direct calculation
    sz2= qdf.sigmaz2(R,z)
    assert numpy.fabs(mvR) < 0.01, 'mean vR calculated from pvRvz not equal to zero for staeckel actions'
    assert numpy.fabs(mvz) < 0.01, 'mean vz calculated from pvRvz not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svR)-0.5*numpy.log(sR2)) < 0.01, 'sigma vR calculated from pvRvz not equal to that from sigmaR2 for staeckel actions'
    assert numpy.fabs(numpy.log(svz)-0.5*numpy.log(sz2)) < 0.01, 'sigma vz calculated from pvRvz not equal to that from sigmaz2 for staeckel actions'
    assert numpy.fabs(svRvz-qdf.sigmaRz(R,z)/numpy.sqrt(sR2*sz2)) < 0.01, 'correlation between vR and vz calculated from pvRvz not equal to zero for adiabatic actions'
    return None

def test_pvRvz_staeckel_diffngl():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAS,cutcounter=True)
    R,z= 0.8, 0.1
    vRs= numpy.linspace(-1.,1.,21)
    vzs= numpy.linspace(-1.,1.,21)
    #ngl=10
    pvRvz= numpy.array([[qdf.pvRvz(vr,vz,R,z,ngl=10) for vz in vzs] for vr in vRs])
    tvR= numpy.tile(vRs,(len(vzs),1)).T
    tvz= numpy.tile(vzs,(len(vRs),1))
    mvR= numpy.sum(tvR*pvRvz)/numpy.sum(pvRvz)
    mvz= numpy.sum(tvz*pvRvz)/numpy.sum(pvRvz)
    svR= numpy.sqrt(numpy.sum(tvR**2.*pvRvz)/numpy.sum(pvRvz)-mvR**2.)
    svz= numpy.sqrt(numpy.sum(tvz**2.*pvRvz)/numpy.sum(pvRvz)-mvz**2.)
    svRvz= (numpy.sum(tvR*tvz*pvRvz)/numpy.sum(pvRvz)-mvR*mvz)/svR/svz
    sR2= qdf.sigmaR2(R,z) #direct calculation
    sz2= qdf.sigmaz2(R,z)
    assert numpy.fabs(mvR) < 0.01, 'mean vR calculated from pvRvz not equal to zero for staeckel actions'
    assert numpy.fabs(mvz) < 0.01, 'mean vz calculated from pvRvz not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svR)-0.5*numpy.log(sR2)) < 0.01, 'sigma vR calculated from pvRvz not equal to that from sigmaR2 for staeckel actions'
    assert numpy.fabs(numpy.log(svz)-0.5*numpy.log(sz2)) < 0.01, 'sigma vz calculated from pvRvz not equal to that from sigmaz2 for staeckel actions'
    assert numpy.fabs(svRvz-qdf.sigmaRz(R,z)/numpy.sqrt(sR2*sz2)) < 0.01, 'correlation between vR and vz calculated from pvRvz not equal to zero for adiabatic actions'
    #ngl=24
    pvRvz= numpy.array([[qdf.pvRvz(vr,vz,R,z,ngl=40) for vz in vzs] for vr in vRs])
    mvR= numpy.sum(tvR*pvRvz)/numpy.sum(pvRvz)
    mvz= numpy.sum(tvz*pvRvz)/numpy.sum(pvRvz)
    svR= numpy.sqrt(numpy.sum(tvR**2.*pvRvz)/numpy.sum(pvRvz)-mvR**2.)
    svz= numpy.sqrt(numpy.sum(tvz**2.*pvRvz)/numpy.sum(pvRvz)-mvz**2.)
    svRvz= (numpy.sum(tvR*tvz*pvRvz)/numpy.sum(pvRvz)-mvR*mvz)/svR/svz
    assert numpy.fabs(mvR) < 0.01, 'mean vR calculated from pvRvz not equal to zero for staeckel actions'
    assert numpy.fabs(mvz) < 0.01, 'mean vz calculated from pvRvz not equal to zero for staeckel actions'
    assert numpy.fabs(numpy.log(svR)-0.5*numpy.log(sR2)) < 0.01, 'sigma vR calculated from pvRvz not equal to that from sigmaR2 for staeckel actions'
    assert numpy.fabs(numpy.log(svz)-0.5*numpy.log(sz2)) < 0.01, 'sigma vz calculated from pvRvz not equal to that from sigmaz2 for staeckel actions'
    assert numpy.fabs(svRvz-qdf.sigmaRz(R,z)/numpy.sqrt(sR2*sz2)) < 0.01, 'correlation between vR and vz calculated from pvRvz not equal to zero for adiabatic actions'
    #ngl=11, shouldn't work
    try:
        pvRvz= numpy.array([[qdf.pvRvz(vr,vz,R,z,ngl=11) for vz in vzs] for vr in vRs])
    except ValueError: pass
    else: raise AssertionError('pvz w/ ngl=odd did not raise ValueError')
    return None

def test_pvRvz_staeckel_arrayin():
    qdf= quasiisothermaldf(1./4.,0.2,0.1,1.,1.,
                           pot=MWPotential,aA=aAS,cutcounter=True)
    R,z= 0.8, 0.1
    pvRvz= qdf.pvRvz(0.1*numpy.ones(2),0.05*numpy.ones(2),R*numpy.ones(2),z*numpy.ones(2))
    assert numpy.all(numpy.fabs(numpy.log(pvRvz)-numpy.log(qdf.pvRvz(0.1,0.05,R,z))) < 10.**-10.), 'pvRvz calculated with R and z array input does not equal to calculated with scalar input'
    return None

