166 lines
6.0 KiB
Python
166 lines
6.0 KiB
Python
# -*- coding: utf-8 -*-
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import sys
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from pyqtgraph.Qt import QtGui, QtCore
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import pyqtgraph.parametertree as pt
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import pyqtgraph as pg
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from pyqtgraph.functions import eq
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import numpy as np
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app = pg.mkQApp()
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def _getWidget(param):
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return list(param.items.keys())[0].widget
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def test_opts():
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paramSpec = [
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dict(name='bool', type='bool', readonly=True),
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dict(name='color', type='color', readonly=True),
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]
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param = pt.Parameter.create(name='params', type='group', children=paramSpec)
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tree = pt.ParameterTree()
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tree.setParameters(param)
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assert _getWidget(param.param('bool')).isEnabled() is False
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assert _getWidget(param.param('bool')).isEnabled() is False
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def test_types():
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paramSpec = [
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dict(name='float', type='float'),
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dict(name='int', type='int'),
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dict(name='str', type='str'),
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dict(name='list', type='list', limits=['x','y','z']),
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dict(name='dict', type='list', limits={'x':1, 'y':3, 'z':7}),
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dict(name='bool', type='bool'),
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dict(name='color', type='color'),
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]
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param = pt.Parameter.create(name='params', type='group', children=paramSpec)
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tree = pt.ParameterTree()
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tree.setParameters(param)
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all_objs = {
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'int0': 0, 'int':7, 'float': -0.35, 'bigfloat': 1e129, 'npfloat': np.float64(5),
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'npint': np.int64(5),'npinf': np.inf, 'npnan': np.nan, 'bool': True,
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'complex': 5+3j, 'str': '#xxx', 'unicode': 'µ',
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'list': [1,2,3], 'dict': {'1': 2}, 'color': pg.mkColor('k'),
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'brush': pg.mkBrush('k'), 'pen': pg.mkPen('k'), 'none': None
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}
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if hasattr(QtCore, 'QString'):
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all_objs['qstring'] = QtCore.QString('xxxµ')
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# float
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types = ['int0', 'int', 'float', 'bigfloat', 'npfloat', 'npint', 'npinf', 'npnan', 'bool']
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check_param_types(param.child('float'), float, float, 0.0, all_objs, types)
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# int
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types = ['int0', 'int', 'float', 'bigfloat', 'npfloat', 'npint', 'bool']
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inttyps = int if sys.version[0] >= '3' else (int, long)
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check_param_types(param.child('int'), inttyps, int, 0, all_objs, types)
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# str (should be able to make a string out of any type)
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types = all_objs.keys()
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strtyp = str if sys.version[0] >= '3' else unicode
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check_param_types(param.child('str'), strtyp, str, '', all_objs, types)
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# bool (should be able to make a boolean out of any type?)
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types = all_objs.keys()
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check_param_types(param.child('bool'), bool, bool, False, all_objs, types)
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# color
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types = ['color', 'int0', 'int', 'float', 'npfloat', 'npint', 'list']
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init = QtGui.QColor(128, 128, 128, 255)
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check_param_types(param.child('color'), QtGui.QColor, pg.mkColor, init, all_objs, types)
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def check_param_types(param, types, map_func, init, objs, keys):
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"""Check that parameter setValue() accepts or rejects the correct types and
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that value() returns the correct type.
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Parameters
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----------
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param : Parameter instance
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types : type or tuple of types
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The allowed types for this parameter to return from value().
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map_func : function
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Converts an input value to the expected output value.
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init : object
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The expected initial value of the parameter
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objs : dict
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Contains a variety of objects that will be tested as arguments to
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param.setValue().
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keys : list
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The list of keys indicating the valid objects in *objs*. When
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param.setValue() is teasted with each value from *objs*, we expect
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an exception to be raised if the associated key is not in *keys*.
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"""
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val = param.value()
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if not isinstance(types, tuple):
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types = (types,)
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assert val == init and type(val) in types
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# test valid input types
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good_inputs = [objs[k] for k in keys if k in objs]
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good_outputs = map(map_func, good_inputs)
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for x,y in zip(good_inputs, good_outputs):
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param.setValue(x)
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val = param.value()
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if not (eq(val, y) and type(val) in types):
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raise Exception("Setting parameter %s with value %r should have resulted in %r (types: %r), "
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"but resulted in %r (type: %r) instead." % (param, x, y, types, val, type(val)))
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# test invalid input types
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for k,v in objs.items():
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if k in keys:
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continue
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try:
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param.setValue(v)
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except (TypeError, ValueError, OverflowError):
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continue
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except Exception as exc:
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raise Exception("Setting %s parameter value to %r raised %r." % (param, v, exc))
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raise Exception("Setting %s parameter value to %r should have raised an exception." % (param, v))
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def test_limits_enforcement():
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p = pt.Parameter.create(name='params', type='group', children=[
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dict(name='float', type='float', limits=[0, 1]),
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dict(name='int', type='int', bounds=[0, 1]),
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dict(name='list', type='list', limits=['x', 'y']),
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dict(name='dict', type='list', limits={'x': 1, 'y': 2}),
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])
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t = pt.ParameterTree()
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t.setParameters(p)
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for k, vin, vout in [('float', -1, 0),
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('float', 2, 1),
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('int', -1, 0),
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('int', 2, 1),
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('list', 'w', 'x'),
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('dict', 'w', 1)]:
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p[k] = vin
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assert p[k] == vout
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def test_data_race():
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# Ensure widgets don't override user setting of param values whether
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# they connect the signal before or after it's added to a tree
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p = pt.Parameter.create(name='int', type='int', value=0)
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t = pt.ParameterTree()
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def override():
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p.setValue(1)
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p.sigValueChanged.connect(override)
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t.setParameters(p)
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pi = next(iter(p.items))
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assert pi.param is p
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pi.widget.setValue(2)
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assert p.value() == pi.widget.value() == 1
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p.sigValueChanged.disconnect(override)
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p.sigValueChanged.connect(override)
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pi.widget.setValue(2)
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assert p.value() == pi.widget.value() == 1
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