#12341: Empty (full) cremona database in Sage 4.8 causes tests to fail
-------------------------------+--------------------------------------------
Reporter: swenson | Owner: cremona
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: elliptic curves | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
-------------------------------+--------------------------------------------
I am on Ubuntu 11.10, and noticed that a fresh install of Sage 4.8 fails a
bunch of tests because the full cremona database is an empty file by
default.
{{{
[swenson@harry 10:18:14] sage-4.8 :) $ ./sage -t /home/swenson/sage-
src/sage-4.8/devel/sage-main/sage/misc/functional.py
(hg)-[default]-
sage -t "devel/sage-main/sage/misc/functional.py"
#0: simplify_sum(expr='sum(q^k,k,0,inf))
#1: simplify_sum(expr=a*'sum(q^k,k,0,inf))
**********************************************************************
File "/home/swenson/sage-src/sage-4.8/devel/sage-
main/sage/misc/functional.py", line 1360:
sage: regulator(EllipticCurve('11a'))
Exception raised:
Traceback (most recent call last):
File "/home/swenson/sage-src/sage-4.8/local/bin/ncadoctest.py", line
1231, in run_one_test
self.run_one_example(test, example, filename, compileflags)
File "/home/swenson/sage-src/sage-4.8/local/bin/sagedoctest.py",
line 38, in run_one_example
OrigDocTestRunner.run_one_example(self, test, example, filename,
compileflags)
File "/home/swenson/sage-src/sage-4.8/local/bin/ncadoctest.py", line
1172, in run_one_example
compileflags, 1) in test.globs
File "<doctest __main__.example_54[3]>", line 1, in <module>
regulator(EllipticCurve('11a'))###line 1360:
sage: regulator(EllipticCurve('11a'))
File "/home/swenson/sage-src/sage-4.8/local/lib/python/site-
packages/sage/schemes/elliptic_curves/constructor.py", line 295, in
EllipticCurve
return ell_rational_field.EllipticCurve_rational_field(x)
File "/home/swenson/sage-src/sage-4.8/local/lib/python/site-
packages/sage/schemes/elliptic_curves/ell_rational_field.py", line 198, in
__init__
X = sage.databases.cremona.CremonaDatabase()[label]
File "/home/swenson/sage-src/sage-4.8/local/lib/python/site-
packages/sage/databases/cremona.py", line 1363, in CremonaDatabase
_db = LargeCremonaDatabase(name)
File "/home/swenson/sage-src/sage-4.8/local/lib/python/site-
packages/sage/databases/cremona.py", line 1119, in __init__
+ 'not appear to be a valid SQL Cremona database.')
RuntimeError: Database at /home/swenson/sage-
src/sage-4.8/data//cremona/cremona.db does not appear to be a valid SQL
Cremona database.
**********************************************************************
1 items had failures:
1 of 5 in __main__.example_54
***Test Failed*** 1 failures.
For whitespace errors, see the file
/home/swenson/.sage//tmp/functional_29532.py
[4.3 s]
----------------------------------------------------------------------
The following tests failed:
sage -t "devel/sage-main/sage/misc/functional.py"
Total time for all tests: 4.3 seconds
[swenson@harry 10:18:22] sage-4.8 :( $ rm /home/swenson/sage-
src/sage-4.8/data/cremona/cremona.db
(hg)-[default]-
[swenson@harry 10:18:25] sage-4.8 :) $ ./sage -t /home/swenson/sage-
src/sage-4.8/devel/sage-main/sage/misc/functional.py
(hg)-[default]-
sage -t "devel/sage-main/sage/misc/functional.py"
[4.3 s]
----------------------------------------------------------------------
All tests passed!
Total time for all tests: 4.3 seconds
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12341>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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