fixtures.FixtureLoadingTests.test_loaddata_error_message fails on Postgres 9.2

[Chris Lawlor]

Running the 'fixtures' tests against PostgreSQL 9.2.3 fails as follows:

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FAIL: test_loaddata_error_message (modeltests.fixtures.tests.FixtureLoadingTests)
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Traceback (most recent call last):
  File "/home/clawlor/code/django/tests/modeltests/fixtures/tests.py", line 255, in test_loaddata_error_message
    management.call_command('loaddata', 'invalid.json', verbosity=0, commit=False)
AssertionError: "Could not load fixtures.Article\(pk=1\): .*$" does not match "Problem installing fixture '/home/clawlor/code/django/tests/modeltests/fixtures/fixtures/invalid.json': Could not load fixtures.Article(pk=1): null value in column "pub_date" violates not-null constraint
DETAIL:  Failing row contains (1, Breaking news, null).
"

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The failure is due to the newline in the exception message after the word 'constraint'. The test regex expects a match ending with ".*$", which does result in a match against a string containing a newline character that is not at the end of the string.

This test does not fail against PostgreSQL 9.1. The version of psycopg2 used does not matter.

The behavior being tested is clearly not broken, this is a simple matter of updating the test regex. A patch is included which removes the "$" requirement.

[Claude Paroz]

Thanks for the report, but this assertion has been modified in ​https://github.com/django/django/commit/c9166733#L253