Remove defunct asdf.test method and use setuptools-scm to generate version file

.gitignore

@@ -53,3 +53,6 @@ pip-wheel-metadata
 
 # Mac OSX
 .DS_Store
+
+# setuptools-scm generated version file
+asdf/version.py

CHANGES.rst

@@ -43,6 +43,8 @@
 - Add ``edit`` subcommand to asdftool for efficient editing of
   the YAML portion of an ASDF file.  [#873, #922]
 
+- Remove the ``asdf.test`` method and ``asdf.__githash__`` attribute. [#943]
+
 2.7.3 (2021-02-25)
 ------------------
 

README.rst

@@ -301,23 +301,18 @@ To run the unit tests from a source checkout of the repository:
     $ pytest
 
 It is also possible to run the test suite from an installed version of
-the package. In a Python interpreter:
+the package.
 
-.. code:: python
-
-    import asdf
-    asdf.test()
-
-Please note that the `astropy <https://github.com/astropy/astropy>`__
-package must be installed to run the tests.
+::
+    pip install asdf[tests]
+    pytest --pyargs asdf
 
 It is also possible to run the tests using `tox
-<https://tox.readthedocs.io/en/latest/>`__. It is first necessary to install
-``tox`` and `tox-conda <https://github.com/tox-dev/tox-conda>`__:
+<https://tox.readthedocs.io/en/latest/>`__.
 
 ::
 
-   $ pip install tox tox-conda
+   $ pip install tox
 
 To list all available environments:
 

asdf/__init__.py

@@ -3,16 +3,10 @@
 Data Format (ASDF) files
 """
 
-# Affiliated packages may add whatever they like to this file, but
-# should keep this content at the top.
-# ----------------------------------------------------------------------------
-from ._internal_init import __version__, __githash__, test
-# ----------------------------------------------------------------------------
-
 __all__ = [
-    'AsdfFile', 'CustomType', 'AsdfExtension', 'Stream', 'open', 'test',
+    'AsdfFile', 'CustomType', 'AsdfExtension', 'Stream', 'open',
     'commands', 'IntegerType', 'ExternalArrayReference', 'info', '__version__',
-    '__githash__', 'ValidationError', 'get_config', 'config_context',
+    'ValidationError', 'get_config', 'config_context',
 ]
 
 
@@ -25,5 +19,6 @@
 from .tags.core.external_reference import ExternalArrayReference
 from ._convenience import info
 from .config import get_config, config_context
+from .version import version as __version__
 
 from jsonschema import ValidationError

setup.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python
+import os
 from setuptools import setup, find_packages
 
 
@@ -23,7 +24,7 @@
 }
 
 setup(
-    use_scm_version=True,
+    use_scm_version={"write_to": os.path.join("asdf", "version.py"), "write_to_template": 'version = "{version}"\n'},
     packages=packages,
     package_dir=package_dir,
     package_data=package_data,