def create_simple_experiment():
""" Returns a simple experiment with a basic context in it """
ctx = DataContext(name="main")
ctx["b"] = 3
ctx["c"] = 5
return Experiment(code=SAMPLE_CODE_1, shared_context=ctx)
def test_impure_execute():
raise SkipTest
code = """
import os # module and function names are discarded by default.
def ff():
global y # will not be retained but will be available in the code block.
y = a + x
b.append(4)
x = a
b.append(3)
ff()
z = y
_x = x # names beginning with underscore are discarded by default
a = 99
"""
context = DataContext(subcontext=dict(a=1, b=[2]))
block = Block(code)
# by default, clean shadow after execution:
shadow = block.execute_impure(context)
assert_equal(set(context.keys()), set(['a', 'b'])) # names unchanged
assert_equal(context['b'],
[2, 3, 4]) # mutable object was changed in context
assert_equal(set(shadow.keys()), set(['x', 'z', 'a']))
assert_equal(context['a'], 1) # original mutable object does not change,
assert_equal(shadow['a'], 99) # but the new object is in the shadow dict.
# do not clean shadow after execution:
shadow = block.execute_impure(context, clean_shadow=False)
assert_equal(set(shadow.keys()), set(['x', 'z', 'a', '_x', 'os', 'ff']))
def test_eval(self):
"""Test most straightforward evaluation functionality"""
d = DataContext()
d['a'] = 10
d['b'] = 20
ec = ExpressionContext(d)
self.assertEqual(200, ec['a*b'])
def new_main():
from numpy import linspace
from codetools.contexts.api import DataContext
from blockcanvas.block_display.block_unit_variables import BlockUnitVariableList
from codetools.contexts.api import DataContext
from blockcanvas.app.experiment import Experiment
code = "y = a*x*x + b*x + c"
context = DataContext(name='Data')
exp = Experiment(code=code, shared_context=context)
context.update(dict(a=1.0, b=1.0, c=0.0))
context['x'] = linspace(-5., 5., 60)
# FIXME: Shouldn't have to manually call this now
exp.context.execute_for_names(["a", "b", "c"])
block = exp.exec_model.block
# Use the experiment's local context as the shadow context
exp.context.shadows = [exp._local_context]
vars = BlockUnitVariableList(block=block, context=exp.context)
config_interactor = InteractorConfig(vars=vars.variables)
interactor = ConfigurableInteractor(context=exp.context,
block=block,
interactor_config=config_interactor)
interactor.configure_traits()
def setUp(self):
self.events = []
self.exceptions = []
d = DataContext()
d['a'] = 1
d['b'] = 2
self.ec = AsyncExecutingContext(subcontext=d, executable=ce)
def test_save_new_project(self):
""" Does saving a new project to file work correctly ?
"""
context = DataContext(name='dummy_context', _bindings={'a': 1, 'b': 2})
self.app.block_unit = BlockUnit(code=self.code, data_context=context)
project_name = create_unique_project_name(self.dir_name,
'test_save_project')
project_file = os.path.join(self.dir_name, project_name + '.prj')
self.app.save_project_to_file(project_file)
# Check if the new files exist
project_dir = os.path.join(self.dir_name, project_name + '_files')
context_file = os.path.join(project_dir, project_name + '.pickle')
script_file = os.path.join(project_dir, project_name + '.py')
layout_file = os.path.join(project_dir, 'layout.pickle')
# print project_file, project_dir, context_file, script_file
self.assertTrue([
os.path.exists(project_file),
os.path.exists(project_dir),
os.path.exists(context_file),
os.path.exists(script_file)
])
# Check if the code was saved out correctly
file_object = open(script_file, 'r')
check_code = file_object.read()
file_object.close()
a, b = 1, 2
exec check_code
self.assertTrue(c, 3)
# Check if the project file was written out correctly
file_object = open(project_file, 'rb')
check_code = file_object.read()
file_object.close()
actual_result = [
line[line.find('=') + 1:].strip()
for line in check_code.split('\n')
]
self.assertTrue(
actual_result == [script_file, context_file, layout_file])
# Check if the context is correct
retrieved_context = DataContext.load_context_from_file(context_file)
expected_keys = set(['a', 'b', 'c'])
self.assertEqual(retrieved_context.name, 'dummy_context')
self.assertEqual(set(retrieved_context.keys()), expected_keys)
self.assertEqual(retrieved_context['c'], 3)
# Cleanup
os.remove(project_file)
os.remove(script_file)
os.remove(context_file)
os.remove(layout_file)
os.rmdir(project_dir)
def setUp(self):
code = "from blockcanvas.debug.my_operator import add\n"\
"c = add(a,b)"
self.block = Block(code)
# Context setup
self.context = MultiContext(DataContext(name='Data'), {})
self.context['a'] = 1
self.context['b'] = 2
def context_factory(self):
""" Return the type of context we are testing.
"""
data_context = DataContext()
context = AdaptedDataContext(context=data_context)
name = self.key_name()
getitem_units = {name: meters / second}
adapter = UnitConversionAdapter(getitem_units=getitem_units)
context.push_adapter(adapter)
return context
def test_exception(self):
ce = CodeExecutable(code="c = a + b")
d = DataContext()
d['a'] = 1
d['b'] = 2
ec = AsyncExecutingContext(subcontext=d, executable=ce)
ec.on_trait_change(self._handle_exceptions, 'exception')
ec.code = '1/0'
ec._wait()
self.assertEqual(len(self.exceptions), 1)
self.assertEqual(ZeroDivisionError, type(self.exceptions[0]))
def test_use_as_context(self):
# Can we use the context as the namespace of a python calculation?
from codetools.contexts.api import DataContext, MultiContext
with tables.open_file('test.h5') as table:
hdf_context = Hdf5Context(file_object=table,
path=['root', 'root.group1', 'root.group2'])
results = DataContext()
context = MultiContext(results, hdf_context)
exec_('array2_plus_one = [a2 + 1 for a2 in array2]', {}, context)
assert_equal(context['array2_plus_one'], [2, 3, 4, 5])
def test_load_project_from_file(self):
""" Does loading a project from file work correctly ?
"""
# Preparing the test case
# Make project.py, project.pickle, project.prj
project_name = create_unique_project_name(self.dir_name,
'test_load_project')
project_dir = os.path.join(self.dir_name, project_name + '_files')
project_file = os.path.join(self.dir_name, project_name + '.prj')
script_path = os.path.join(project_dir, project_name + '.py')
context_path = os.path.join(project_dir, project_name + '.pickle')
script = '\n'.join(
('SCRIPT_PATH = ' + script_path, 'CONTEXT_PATH = ' + context_path))
os.makedirs(project_dir)
file_object = open(project_file, 'wb')
file_object.write(script)
file_object.close()
file_object = open(script_path, 'w')
file_object.write(self.code)
file_object.close()
d = DataContext(name='dummy_context',
_bindings={
'a': 1,
'b': 2,
'd': 0.01
})
d.save_context_to_file(context_path)
# Check if the setup is correct
self.assertTrue([
os.path.exists(project_file),
os.path.exists(project_dir),
os.path.exists(script_path),
os.path.exists(context_path)
])
# Load the project from the file.
self.app.block_unit = BlockUnit()
self.app.load_project_from_file(project_file)
# Clean up after loading
os.remove(project_file)
os.remove(script_path)
os.remove(context_path)
os.rmdir(project_dir)
expected_keys = set(['a', 'b', 'c', 'd', 'context'])
self.assertEqual(set(self.app.block_unit.data_context.keys()),
expected_keys)
self.assertTrue(self.app.block_unit.data_context.has_key('c'))
self.assertEqual(self.app.block_unit.data_context['c'], 3)
def replace_context(self, parameter_s=''):
"""Replace the IPython namespace with a DataContext.
"""
ipshell = self.shell
if hasattr(ipshell.user_ns, 'subcontext'):
# Toggle back to plain dict.
user_ns = ipshell.user_ns.subcontext
else:
from codetools.contexts.api import DataContext
user_ns = DataContext(subcontext=ipshell.user_ns)
ipshell.user_ns = user_ns
def test_events(self):
self.last_event = None
self.event_count = 0
d = DataContext()
d['a'] = 10
d['b'] = 20
ec = ExpressionContext(d)
ec['a*b']
ec.on_trait_change(self._event_handler, 'items_modified')
ec['a'] = 30
assert 'a' in self.last_event.modified
assert 'a*b' in self.last_event.modified
def test_bound_inputs(self):
code = "c = a * b\n" \
"x = 3 + c\n"
block = Block(code)
context = DataContext()
context['a'] = 1
context['b'] = 2
sub_block = block.restrict(inputs=('c'))
self.assertEqual(sub_block.inputs, set(['c']))
def gen_context():
""" Create a test context.
"""
dc = DataContext()
dc['foo_int'] = 1
dc['foo_float'] = 1.5
dc['foo_array'] = np.arange(10)
dc['foo_str'] = 'a string'
dc['bar_int'] = 2
dc['bar_float'] = 2.5
return dc
def create_simple_project():
""" Returns a simple project with a single experiment and a single context """
ctx = DataContext(name="main")
ctx["a"] = 5
ctx["b"] = 7
ctx["c"] = 11
proj = Project(contexts=[ctx])
exp = Experiment(code=SAMPLE_CODE_1, shared_context=ctx)
proj.add_experiment(exp)
return proj
def create_multi_experiment_proj():
""" Returns a project with two contexts and two experiments.
"""
ctx = DataContext(name="main")
ctx["a"] = 5
ctx["b"] = 7
ctx["c"] = 11
ctx2 = DataContext(name="secondary")
ctx2["a"] = 4
ctx2["b"] = 16
ctx2["c"] = 32
ctx2["m"] = 64
ctx2["n"] = 128
proj = Project(contexts=[ctx, ctx2])
e1 = Experiment(code=SAMPLE_CODE_1, shared_context=ctx)
e2 = Experiment(code=SAMPLE_CODE_2, shared_context=ctx)
proj.experiments = [e1, e2]
return proj
def setUp(self):
code = "from blockcanvas.debug.my_operator import add, mul\n" \
"c = add(a,b)\n" \
"d = mul(c, 2)\n" \
"e = mul(c, 3)\n" \
"f = add(d,e)"
self.block = Block(code)
# Context setup.
self.context = MultiContext(DataContext(name='Data'), {})
self.context['a'] = 1
self.context['b'] = 2
def test_execute(self):
d = DataContext()
d['a'] = 1
d['b'] = 3
d['g'] = 5
rce = RestrictingCodeExecutable(code=CODE)
ec = AsyncExecutingContext(subcontext=d, executable=rce)
ec.on_trait_change(self._items_modified_fired, 'items_modified')
ec.execute()
ec._wait()
self.assertEqual(self.events[0].added, ['c', 'd', 'f'])
self.assertEqual(len(self.events), 1)
def setUp(self):
unittest.TestCase.setUp(self)
# Create the contexts
self.context = AdaptedDataContext(subcontext=DataContext())
self.raw_context = self.context.subcontext
# Add data (before creating the adapter)
self.context.update(fun=1, bar=2, baz=3, not_mapped=4)
# Add an adapter
self.adapter = NameAdapter(map={"foo": "fun", "bar": "baz"})
self.context.push_adapter(self.adapter)
def test_defer_execution():
""" Does deferring execution work?
"""
d = DataContext()
ec = ExecutingContext(subcontext=d, executable=ce)
ec.defer_execution = True
ec['a'] = 1
assert 'c' not in ec
ec['b'] = 2
assert 'c' not in ec
ec.defer_execution = False
assert 'c' in ec
assert ec['c'] == 3
def reset(self):
""" Reset the Application to its initial state.
Clean all old attributes and instanciate new ones.
"""
for context in self.project.contexts:
self.project.remove_context(context)
data_context = DataContext(name='data')
self.project.add_context(data_context)
exp = Experiment(shared_context=data_context)
self.project.active_experiment = exp
self.context_viewer = ContextVariableList(context=exp.context)
def test_execute_for_names(self):
"""`execute_for_names()` is part of the ExecutingContext interface """
d = DataContext()
d['a'] = 1
d['b'] = 3
d['g'] = 5
rce = RestrictingCodeExecutable(code=CODE)
ec = AsyncExecutingContext(subcontext=d, executable=rce)
ec.on_trait_change(self._items_modified_fired, 'items_modified')
ec.execute_for_names(['g'])
ec._wait()
self.assertEqual(self.events[0].added, ['f'])
def __init__(self, code=None, shared_context=None, *args, **kwargs):
super(Experiment, self).__init__(*args, **kwargs)
if code is None:
self.exec_model = ExecutionModel()
else:
self.exec_model = ExecutionModel.from_code(code)
self.controller = BlockGraphController(execution_model=self.exec_model)
self.canvas = BlockCanvas(graph_controller=self.controller)
self.controller.canvas = self.canvas
self._shared_context = shared_context
self._local_context = DataContext(name=self._LOCAL_NAME_TEMPLATE())
self._update_exec_context()
def test_specific_inputs(self):
""" Test the interactor does add attributes for the inputs
"""
self.context = DataContext(name='Data')
self.context['a'] = 1
self.context['b'] = 2
self.context['c'] = 3
self.context['d'] = 4
self.context['e'] = 5
interactor = SimpleInteractor(['a', 'd', 'e'], context=self.context)
self.assertTrue(hasattr(interactor, interactor._input_prefix + "a"))
self.assertTrue(hasattr(interactor, interactor._input_prefix + "d"))
self.assertTrue(hasattr(interactor, interactor._input_prefix + "e"))
self.assertFalse(hasattr(interactor, interactor._input_prefix + "c"))
self.assertFalse(hasattr(interactor, interactor._input_prefix + "b"))
def test_simple_output_reduction(self):
code = 'from blockcanvas.debug.my_operator import add, mul\n' \
'c = add(a,b)\n' \
'd = mul(a,16)\n'
block = Block(code)
context = DataContext()
context['a'] = 1
context['b'] = 2
sub_block = block.restrict(outputs=('d'))
self.assertEqual(sub_block.inputs, set(['a']))
sub_block.execute(context)
self.assertTrue(context.has_key('d'))
self.assertEqual(context['d'], 16)
def test_defer_execution(self):
""" Does deferring execution work?
"""
d = DataContext()
ec = AsyncExecutingContext(subcontext=d, executable=ce)
ec.defer_execution = True
ec['a'] = 1
time.sleep(0.1)
self.assertNotIn('c', ec)
ec['b'] = 2
time.sleep(0.1)
self.assertNotIn('c', ec)
ec.defer_execution = False
ec._wait()
self.assertIn('c', ec)
self.assertEqual(ec['c'], 3)
def test_basic():
""" Does the basic functionality of an ExecutingContext work?
"""
d = DataContext()
d['a'] = 1
d['b'] = 2
ec = ExecutingContext(subcontext=d, executable=ce)
assert 'a' in ec
assert 'b' in ec
assert 'c' not in ec
ec['a'] = 2
assert ec['a'] == 2
assert 'c' in ec
assert ec['c'] == 4
ec['a'] = 4
assert ec['a'] == 4
assert ec['c'] == 6
def setUp(self):
unittest.TestCase.setUp(self)
# Set up data for the contexts
depth = linspace(0.0, 100.0, 11)
lith = array(['sand'] * len(depth), dtype=object)
# Create the contexts
self.context = AdaptedDataContext(subcontext=DataContext())
self.raw_context = self.context.subcontext
# Add data (before creating the adapter)
self.context.update(depth=depth, lith=lith)
# Add an adapter
self.mask = (20.0 <= depth) & (depth <= 50.0)
self.adapter = MaskingAdapter(mask=self.mask)
self.context.push_adapter(self.adapter)
def test_unbound_inputs(self):
code = 'from blockcanvas.debug.my_operator import add, mul\n' \
"c = add(a,b)\n" \
"d = mul(c,a)\n" \
"z = add(b, 2)"
block = Block(code)
context = DataContext()
context['a'] = 2
context['b'] = 1
sub_block = block.restrict(inputs=('a'))
self.assertEqual(sub_block.inputs, set(['a', 'b']))
self.assertEqual(sub_block.outputs, set(['c', 'd', 'add', 'mul']))
sub_block.execute(context)
self.assertTrue(context.has_key('c'))
self.assertEqual(context['c'], 3)
self.assertTrue(context.has_key('d'))
self.assertEqual(context['d'], 6)