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| author | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-04-29 23:26:36 -0400 |
|---|---|---|
| committer | Mike Bayer <mike_mp@zzzcomputing.com> | 2019-05-18 17:46:10 -0400 |
| commit | f07e050c9ce4afdeb9c0c136dbcc547f7e5ac7b8 (patch) | |
| tree | 1b3cd7409ae2eddef635960126551d74f469acc1 /lib/sqlalchemy/testing/assertions.py | |
| parent | 614dfb5f5b5a2427d5d6ce0bc5f34bf0581bf698 (diff) | |
| download | sqlalchemy-f07e050c9ce4afdeb9c0c136dbcc547f7e5ac7b8.tar.gz | |
Implement new ClauseElement role and coercion system
A major refactoring of all the functions handle all detection of
Core argument types as well as perform coercions into a new class hierarchy
based on "roles", each of which identify a syntactical location within a
SQL statement. In contrast to the ClauseElement hierarchy that identifies
"what" each object is syntactically, the SQLRole hierarchy identifies
the "where does it go" of each object syntactically. From this we define
a consistent type checking and coercion system that establishes well
defined behviors.
This is a breakout of the patch that is reorganizing select()
constructs to no longer be in the FromClause hierarchy.
Also includes a rename of as_scalar() into scalar_subquery(); deprecates
automatic coercion to scalar_subquery().
Partially-fixes: #4617
Change-Id: I26f1e78898693c6b99ef7ea2f4e7dfd0e8e1a1bd
Diffstat (limited to 'lib/sqlalchemy/testing/assertions.py')
| -rw-r--r-- | lib/sqlalchemy/testing/assertions.py | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/sqlalchemy/testing/assertions.py b/lib/sqlalchemy/testing/assertions.py index d8038e225..819fedcc7 100644 --- a/lib/sqlalchemy/testing/assertions.py +++ b/lib/sqlalchemy/testing/assertions.py @@ -247,6 +247,10 @@ def le_(a, b, msg=None): assert a <= b, msg or "%r != %r" % (a, b) +def is_instance_of(a, b, msg=None): + assert isinstance(a, b), msg or "%r is not an instance of %r" % (a, b) + + def is_true(a, msg=None): is_(a, True, msg=msg) |