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# imports
import unittest
# bsfs imports
from bsfs.namespace import ns
from bsfs.utils import URI
# objects to test
from bsfs.query.ast.fetch import FetchExpression
from bsfs.query.ast.fetch import All, This
from bsfs.query.ast.fetch import _Branch, Fetch
from bsfs.query.ast.fetch import _Named, Node, Value
## code ##
class TestExpression(unittest.TestCase): # FetchExpression
def test_essentials(self):
class Foo(FetchExpression): pass
# comparison
self.assertEqual(FetchExpression(), FetchExpression())
self.assertEqual(hash(FetchExpression()), hash(FetchExpression()))
# comparison respects type
self.assertNotEqual(FetchExpression(), Foo())
self.assertNotEqual(hash(FetchExpression()), hash(Foo()))
# string conversion
self.assertEqual(str(FetchExpression()), 'FetchExpression()')
self.assertEqual(repr(FetchExpression()), 'FetchExpression()')
self.assertEqual(str(Foo()), 'Foo()')
self.assertEqual(repr(Foo()), 'Foo()')
class TestAll(unittest.TestCase): # All
def test_essentials(self):
class Foo(All): pass
expr0 = This('hello')
expr1 = This('world')
# comparison
self.assertEqual(All(expr0), All(expr0))
self.assertEqual(hash(All(expr0)), hash(All(expr0)))
# comparison respects type
self.assertNotEqual(All(expr0), Foo(expr0))
self.assertNotEqual(hash(All(expr0)), hash(Foo(expr0)))
# comparison respects expressions
self.assertEqual(All(expr0, expr1), All(expr0, expr1))
self.assertEqual(hash(All(expr0, expr1)), hash(All(expr0, expr1)))
self.assertNotEqual(All(expr0), All(expr1))
self.assertNotEqual(hash(All(expr0)), hash(All(expr1)))
# expressions are unordered
self.assertEqual(All(expr0, expr1), All(expr1, expr0))
self.assertEqual(hash(All(expr0, expr1)), hash(All(expr1, expr0)))
# string conversion
self.assertIn(str(All(expr0, expr1)), {
'All({This(world), This(hello)})',
'All({This(hello), This(world)})'})
self.assertIn(repr(All(expr0, expr1)), {
'All({This(world), This(hello)})',
'All({This(hello), This(world)})'})
def test_members(self):
class Foo(): pass
expr0 = This('hello')
expr1 = This('world')
# requires at least one child expression
self.assertRaises(AttributeError, All)
# expr returns child expressions
self.assertEqual(All(expr0, expr1).expr, {expr0, expr1})
# can pass expressions as arguments
self.assertEqual(All(expr0, expr1).expr, {expr0, expr1})
# can pass a single expression as argument
self.assertEqual(All(expr0).expr, {expr0})
# can pass expressions as list-like
self.assertEqual(All([expr0, expr1]).expr, {expr0, expr1})
self.assertEqual(All((expr0, expr1)).expr, {expr0, expr1})
self.assertEqual(All({expr0, expr1}).expr, {expr0, expr1})
# can pass a single expression as list-like
self.assertEqual(All([expr0]).expr, {expr0})
# must pass a FilterExpression
self.assertRaises(TypeError, All, Foo())
self.assertRaises(TypeError, All, 1234)
self.assertRaises(TypeError, All, 'hello world')
# len returns the number of child expressions
self.assertEqual(len(All(expr0)), 1)
self.assertEqual(len(All(expr0, expr1)), 2)
# iter iterates over child expressions
self.assertSetEqual(set(All(expr0, expr1)), {expr0, expr1})
class TestThis(unittest.TestCase): # This
def test_essentials(self):
class Foo(This): pass
# comparison
self.assertEqual(This('hello'), This('hello'))
self.assertEqual(hash(This('hello')), hash(This('hello')))
# comparison respects type
self.assertNotEqual(This('hello'), Foo('hello'))
self.assertNotEqual(hash(This('hello')), hash(Foo('hello')))
# comparison respects name
self.assertNotEqual(This('hello'), This('world'))
self.assertNotEqual(hash(This('hello')), hash(This('world')))
# string conversion
self.assertEqual(str(This('hello')), 'This(hello)')
self.assertEqual(repr(This('hello')), 'This(hello)')
def test_members(self):
class Foo(): pass
# name returns member
self.assertEqual(This('hello').name, 'hello')
self.assertEqual(This('world').name, 'world')
# name is converted to a string
self.assertEqual(This(1234).name, '1234')
foo = Foo()
self.assertEqual(This(foo).name, str(foo))
class TestBranch(unittest.TestCase): # _Branch, Fetch
def test_essentials(self):
pred = ns.bse.tag
expr = FetchExpression()
# comparison
self.assertEqual(_Branch(pred), _Branch(pred))
self.assertEqual(hash(_Branch(pred)), hash(_Branch(pred)))
self.assertEqual(Fetch(pred, expr), Fetch(pred, expr))
self.assertEqual(hash(Fetch(pred, expr)), hash(Fetch(pred, expr)))
# comparison respects type
self.assertNotEqual(_Branch(pred), Fetch(pred, expr))
self.assertNotEqual(hash(_Branch(pred)), hash(Fetch(pred, expr)))
self.assertNotEqual(Fetch(pred, expr), _Branch(pred))
self.assertNotEqual(hash(Fetch(pred, expr)), hash(_Branch(pred)))
# comparison respects predicate
self.assertNotEqual(_Branch(pred), _Branch(ns.bse.filesize))
self.assertNotEqual(hash(_Branch(pred)), hash(_Branch(ns.bse.filesize)))
self.assertNotEqual(Fetch(pred, expr), Fetch(ns.bse.filesize, expr))
self.assertNotEqual(hash(Fetch(pred, expr)), hash(Fetch(ns.bse.filesize, expr)))
# comparison respects expression
self.assertNotEqual(Fetch(pred, expr), Fetch(pred, This('foo')))
self.assertNotEqual(hash(Fetch(pred, expr)), hash(Fetch(pred, This('foo'))))
# string conversion
self.assertEqual(str(_Branch(pred)), f'_Branch({pred})')
self.assertEqual(repr(_Branch(pred)), f'_Branch({pred})')
self.assertEqual(str(Fetch(pred, expr)), f'Fetch({pred}, {expr})')
self.assertEqual(repr(Fetch(pred, expr)), f'Fetch({pred}, {expr})')
def test_members(self):
class Foo(): pass
pred = ns.bse.tag
expr = FetchExpression()
# predicate returns member
self.assertEqual(_Branch(pred).predicate, pred)
self.assertEqual(Fetch(pred, expr).predicate, pred)
# can pass an URI
self.assertEqual(_Branch(ns.bse.filename).predicate, ns.bse.filename)
self.assertEqual(Fetch(ns.bse.filename, expr).predicate, ns.bse.filename)
# must pass an URI
self.assertRaises(TypeError, _Branch, Foo())
self.assertRaises(TypeError, Fetch, Foo(), expr)
# expression returns member
self.assertEqual(Fetch(pred, expr).expr, expr)
# expression must be a FilterExpression
self.assertRaises(TypeError, Fetch, ns.bse.filename, 'hello')
self.assertRaises(TypeError, Fetch, ns.bse.filename, 1234)
self.assertRaises(TypeError, Fetch, ns.bse.filename, Foo())
class TestNamed(unittest.TestCase): # _Named, Node, Value
def test_essentials(self):
pred = ns.bse.tag
name = 'foobar'
# comparison
self.assertEqual(_Named(pred, name), _Named(pred, name))
self.assertEqual(hash(_Named(pred, name)), hash(_Named(pred, name)))
# comparison respects type
self.assertNotEqual(_Named(pred, name), Node(pred, name))
self.assertNotEqual(Node(pred, name), Value(pred, name))
self.assertNotEqual(Value(pred, name), _Named(pred, name))
self.assertNotEqual(hash(_Named(pred, name)), hash(Node(pred, name)))
self.assertNotEqual(hash(Node(pred, name)), hash(Value(pred, name)))
self.assertNotEqual(hash(Value(pred, name)), hash(_Named(pred, name)))
# comparison respects predicate
self.assertNotEqual(_Named(pred, name), _Named(ns.bse.filesize, name))
self.assertNotEqual(hash(_Named(pred, name)), hash(_Named(ns.bse.filesize, name)))
self.assertNotEqual(Node(pred, name), Node(ns.bse.filesize, name))
self.assertNotEqual(hash(Node(pred, name)), hash(Node(ns.bse.filesize, name)))
self.assertNotEqual(Value(pred, name), Value(ns.bse.filesize, name))
self.assertNotEqual(hash(Value(pred, name)), hash(Value(ns.bse.filesize, name)))
# comparison respects name
self.assertNotEqual(_Named(pred, name), _Named(pred, 'foo'))
self.assertNotEqual(hash(_Named(pred, name)), hash(_Named(pred, 'foo')))
self.assertNotEqual(Node(pred, name), Node(pred, 'foo'))
self.assertNotEqual(hash(Node(pred, name)), hash(Node(pred, 'foo')))
self.assertNotEqual(Value(pred, name), Value(pred, 'foo'))
self.assertNotEqual(hash(Value(pred, name)), hash(Value(pred, 'foo')))
# string conversion
self.assertEqual(str(_Named(pred, name)), f'_Named({pred}, {name})')
self.assertEqual(repr(_Named(pred, name)), f'_Named({pred}, {name})')
self.assertEqual(str(Node(pred, name)), f'Node({pred}, {name})')
self.assertEqual(repr(Node(pred, name)), f'Node({pred}, {name})')
self.assertEqual(str(Value(pred, name)), f'Value({pred}, {name})')
self.assertEqual(repr(Value(pred, name)), f'Value({pred}, {name})')
def test_members(self):
class Foo(): pass
pred = ns.bse.tag
name = 'foobar'
# predicate returns member
self.assertEqual(_Named(pred, name).predicate, pred)
self.assertEqual(Node(pred, name).predicate, pred)
self.assertEqual(Value(pred, name).predicate, pred)
# can pass an URI as predicate
self.assertEqual(_Named(ns.bse.filename, name).predicate, ns.bse.filename)
self.assertEqual(Node(ns.bse.filename, name).predicate, ns.bse.filename)
self.assertEqual(Value(ns.bse.filename, name).predicate, ns.bse.filename)
# must pass an URI
self.assertRaises(TypeError, _Named, Foo(), name)
self.assertRaises(TypeError, Node, Foo(), name)
self.assertRaises(TypeError, Value, Foo(), name)
# name returns member
self.assertEqual(_Named(pred, name).name, name)
self.assertEqual(Node(pred, name).name, name)
self.assertEqual(Value(pred, name).name, name)
# name is converted to a string
self.assertEqual(_Named(pred, 1234).name, '1234')
self.assertEqual(Node(pred, 1234).name, '1234')
self.assertEqual(Value(pred, 1234).name, '1234')
## main ##
if __name__ == '__main__':
unittest.main()
## EOF ##
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