[WIP]: Trying to fix Windows CI

.github/workflows/windows-tests.yml

@@ -3,10 +3,10 @@ name: Windows-tests
 on:
   push:
     branches:
-      - DISABLED
+      - main
   pull_request:
     branches:
-      - DISABLED
+      - main
 
 jobs:
   build:
@@ -21,17 +21,20 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - uses: goanpeca/setup-miniconda@v1
+      - uses: conda-incubator/setup-miniconda@v1
         with:
           auto-update-conda: true
           python-version: ${{ matrix.python-version }}
 
       - name: Install dependencies
+        shell: bash -l {0}
         run: |
           conda install -c conda-forge -q gsl libpython
           python -m pip install -e .[test]
+          python -m pip install virtualenv==20.0.33  # 20.0.34 broken!
           python -m pip install tox
 
       - name: Run tests
+        shell: bash -l {0}
         run: |
           tox -e py38-test

gala/conftest.py

@@ -7,33 +7,36 @@
 
 from astropy.version import version as astropy_version
 
-# For Astropy 3.0 and later, we can use the standalone pytest plugin
-if astropy_version < '3.0':
-    from astropy.tests.pytest_plugins import *  # noqa
-    del pytest_report_header
-    ASTROPY_HEADER = True
-else:
-    try:
-        from pytest_astropy_header.display import PYTEST_HEADER_MODULES, TESTED_VERSIONS
-        ASTROPY_HEADER = True
-    except ImportError:
-        ASTROPY_HEADER = False
+from pytest_astropy_header.display import (
+    PYTEST_HEADER_MODULES,
+    TESTED_VERSIONS,
+    pytest_report_header as astropy_header)
 
 
 def pytest_configure(config):
 
-    if ASTROPY_HEADER:
+    config.option.astropy_header = True
 
-        config.option.astropy_header = True
+    # Customize the following lines to add/remove entries from the list of
+    # packages for which version numbers are displayed when running the tests.
+    PYTEST_HEADER_MODULES.pop('Pandas', None)
+    PYTEST_HEADER_MODULES['scikit-image'] = 'skimage'
 
-        # Customize the following lines to add/remove entries from the list of
-        # packages for which version numbers are displayed when running the tests.
-        PYTEST_HEADER_MODULES.pop('Pandas', None)
-        PYTEST_HEADER_MODULES['scikit-image'] = 'skimage'
+    from . import __version__
+    packagename = os.path.basename(os.path.dirname(__file__))
+    TESTED_VERSIONS[packagename] = __version__
+
+
+def pytest_report_header(config):
+    from gala._cconfig import GSL_ENABLED
+
+    if GSL_ENABLED:
+        hdr = " +++ Gala compiled with GSL +++"
+    else:
+        hdr = " --- Gala compiled without GSL ---"
+
+    return hdr + "\n"
 
-        from . import __version__
-        packagename = os.path.basename(os.path.dirname(__file__))
-        TESTED_VERSIONS[packagename] = __version__
 
 # Uncomment the last two lines in this block to treat all DeprecationWarnings as
 # exceptions. For Astropy v2.0 or later, there are 2 additional keywords,

gala/dynamics/core.py

@@ -874,8 +874,8 @@ def to_galpy_orbit(self, ro=None, vo=None):
         galpy_orbit : `galpy.orbit.Orbit`
 
         """
-        import galpy
         from galpy.orbit import Orbit
+        from galpy.util.config import __config__ as galpy_config
 
         if self.frame is not None:
             from ..potential import StaticFrame
@@ -884,11 +884,11 @@ def to_galpy_orbit(self, ro=None, vo=None):
             w = self
 
         if ro is None:
-            ro = galpy.config.__config__.getfloat('normalization', 'ro')
+            ro = galpy_config.getfloat('normalization', 'ro')
             ro = ro * u.kpc
 
         if vo is None:
-            vo = galpy.config.__config__.getfloat('normalization', 'vo')
+            vo = galpy_config.getfloat('normalization', 'vo')
             vo = vo * u.km/u.s
 
         # PhaseSpacePosition or Orbit:
@@ -904,7 +904,7 @@ def to_galpy_orbit(self, ro=None, vo=None):
 
         o = Orbit(np.array([R, vR, vT, z, vz, phi]).T, ro=ro, vo=vo)
 
-        if hasattr(w, 't'):
+        if hasattr(w, 't') and w.t is not None:
             o.t = w.t.to_value(ro / vo)
 
         return o

gala/dynamics/tests/test_core.py

@@ -393,9 +393,9 @@ def test_frame_transform():
 @pytest.mark.parametrize('obj', [
     PhaseSpacePosition([1, 2, 3.]*u.kpc, [1, 2, 3.]*u.km/u.s),
     PhaseSpacePosition([1, 2, 3.]*u.kpc, [1, 2, 3.]*u.km/u.s,
-                       StaticFrame(galactic)),
+                       StaticFrame(units=galactic)),
     PhaseSpacePosition([1, 2, 3.]*u.kpc, [1, 2, 3.]*u.km/u.s,
-                       ConstantRotatingFrame([1., 0, 0]*u.rad/u.Myr,
+                       ConstantRotatingFrame(Omega=[1., 0, 0]*u.rad/u.Myr,
                                              units=galactic)),
 ])
 def test_io(tmpdir, obj):
@@ -412,11 +412,9 @@ def test_io(tmpdir, obj):
 
 
 @pytest.mark.parametrize('obj', [
-    PhaseSpacePosition([1,2,3.]*u.kpc, [1,2,3.]*u.km/u.s),
-    PhaseSpacePosition([1,2,3.]*u.kpc, [1,2,3.]*u.km/u.s,
-                       StaticFrame(galactic)),
-    PhaseSpacePosition([1,2,3.]*u.kpc, [1,2,3.]*u.km/u.s,
-                       ConstantRotatingFrame([1.,0,0]*u.rad/u.Myr, galactic)),
+    PhaseSpacePosition([1, 2, 3.]*u.kpc, [1, 2, 3.]*u.km/u.s),
+    PhaseSpacePosition([1, 2, 3.]*u.kpc, [1, 2, 3.]*u.km/u.s,
+                       StaticFrame(units=galactic)),
 ])
 @pytest.mark.skipif(not HAS_GALPY,
                     reason="requires galpy to run this test")

gala/potential/frame/builtin/transformations.py

@@ -3,7 +3,8 @@
 import numpy as np
 
 # Gala
-from ....dynamics import Orbit
+from gala.dynamics import Orbit
+from gala.units import DimensionlessUnitSystem
 
 __all__ = ['static_to_constantrotating', 'constantrotating_to_static']
 
@@ -145,3 +146,31 @@ def constantrotating_to_static(frame_r, frame_i, w, t=None):
     """
     return _constantrotating_static_helper(frame_r=frame_r, frame_i=frame_i,
                                            w=w, t=t, sign=-1.)
+
+
+def static_to_static(frame_r, frame_i, w, t=None):
+    """
+    No-op transform
+
+    Parameters
+    ----------
+    frame_i : `~gala.potential.StaticFrame`
+    frame_r : `~gala.potential.ConstantRotatingFrame`
+    w : `~gala.dynamics.PhaseSpacePosition`, `~gala.dynamics.Orbit`
+    t : quantity_like (optional)
+        Required if input coordinates are just a phase-space position.
+
+    Returns
+    -------
+    pos : `~astropy.units.Quantity`
+        Position in static, inertial frame.
+    vel : `~astropy.units.Quantity`
+        Velocity in static, inertial frame.
+    """
+    tmp = [isinstance(frame_r.units, DimensionlessUnitSystem),
+           isinstance(frame_i.units, DimensionlessUnitSystem)]
+    if not all(tmp) and any(tmp):
+        raise ValueError(
+            "StaticFrame to StaticFrame transformations are only allowed if "
+            "both unit systems are physical, or both are dimensionless.")
+    return w.pos.xyz, w.vel.d_xyz

tox.ini

@@ -59,8 +59,8 @@ extras =
 
 commands =
     pip freeze
-    !cov: pytest --pyargs gala {toxinidir}/docs {posargs}
-    cov: pytest --pyargs gala {toxinidir}/docs --cov gala --cov-config={toxinidir}/setup.cfg {posargs}
+    !cov: pytest -v --pyargs gala {toxinidir}/docs {posargs}
+    cov: pytest -v --pyargs gala {toxinidir}/docs --cov gala --cov-config={toxinidir}/setup.cfg {posargs}
 
 # Runs pip install -e . instead of building an sdist and installing
 usedevelop = True
@@ -81,7 +81,7 @@ conda_deps =
     gsl
 commands =
     pip freeze
-    pytest --pyargs gala {toxinidir}/docs
+    pytest -v --pyargs gala {toxinidir}/docs
 
 [testenv:local_build_docs]
 changedir = docs