doctest: Make sage.doctest.sources.get_basename work in more situations

[infinity0]

This lets you specify SAGE_SRC like /path/to/test/dir/../../src/dir, which
avoids post-install test failures in sage/doctest/test.py

Probably will be helpful for #21507.

Depends on #27191

Component: doctest framework

Keywords: debian

Author: Ximin Luo, Julian Rüth

Branch/Commit: u/saraedum/22445 @ e27e8c3

Reviewer: Julian Rüth

Issue created by migration from https://trac.sagemath.org/ticket/22445

[infinity0]

Branch: u/infinity0/doctest__make_sage_doctest_sources_get_basename_work_in_more_situations

[infinity0]

Description changed:

--- 
+++ 
@@ -1 +1,4 @@
+This lets you specify SAGE_SRC like /path/to/test/dir/../../src/dir, which
+avoids post-install test failures in sage/doctest/test.py
 
+Probably will be helpful for #21507.

[infinity0]

Author: Ximin Luo

[infinity0]

Changed branch from u/infinity0/doctest__make_sage_doctest_sources_get_basename_work_in_more_situations to none

[videlec]

comment:3

Hi, no branch again...

[infinity0]

Branch: u/infinity0/doctest__make_sage_doctest_sources_get_basename_work_in_more_situations