def test_subscript_reference(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'Var A[Dim1, Dim2]'},
{'Var A': 'var_a'}, {
'Dim1': ['A', 'B'],
'Dim2': ['C', 'D', 'E']
})
self.assertEqual(res[0]['py_expr'], 'var_a()')
res = parse_general_expression({'expr': 'Var B[Dim1, C]'},
{'Var B': 'var_b'}, {
'Dim1': ['A', 'B'],
'Dim2': ['C', 'D', 'E']
})
self.assertEqual(res[0]['py_expr'], "var_b().loc[{'Dim2': ['C']}]")
res = parse_general_expression({'expr': 'Var C[Dim1, C, H]'},
{'Var C': 'var_c'}, {
'Dim1': ['A', 'B'],
'Dim2': ['C', 'D', 'E'],
'Dim3': ['F', 'G', 'H', 'I']
})
self.assertEqual(res[0]['py_expr'],
"var_c().loc[{'Dim2': ['C'], 'Dim3': ['H']}]")
def test_caps_handling(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'Abs(-3)'})
self.assertEqual(res[0]['py_expr'], 'abs(-3)')
res = parse_general_expression({'expr': 'ABS(-3)'})
self.assertEqual(res[0]['py_expr'], 'abs(-3)')
res = parse_general_expression({'expr': 'aBS(-3)'})
self.assertEqual(res[0]['py_expr'], 'abs(-3)')
def test_caps_handling(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'Abs(-3)'})
self.assertEqual(res[0]['py_expr'], 'abs(-3)')
res = parse_general_expression({'expr': 'ABS(-3)'})
self.assertEqual(res[0]['py_expr'], 'abs(-3)')
res = parse_general_expression({'expr': 'aBS(-3)'})
self.assertEqual(res[0]['py_expr'], 'abs(-3)')
def test_function_calls(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'ABS(StockA)'}, {'StockA': 'stocka'})
self.assertEqual(res[0]['py_expr'], 'abs(stocka())')
res = parse_general_expression({'expr': 'If Then Else(A>B, 1, 0)'}, {'A': 'a', 'B':'b'})
self.assertEqual(res[0]['py_expr'], 'functions.if_then_else(a()>b(),1,0)')
# test that function calls are handled properly in arguments
res = parse_general_expression({'expr': 'If Then Else(A>B,1,A)'}, {'A': 'a', 'B': 'b'})
self.assertEqual(res[0]['py_expr'], 'functions.if_then_else(a()>b(),1,a())')
def test_number_parsing(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': '20'})
self.assertEqual(res[0]['py_expr'], '20')
res = parse_general_expression({'expr': '3.14159'})
self.assertEqual(res[0]['py_expr'], '3.14159')
res = parse_general_expression({'expr': '+3.14159'})
self.assertEqual(res[0]['py_expr'], '3.14159')
res = parse_general_expression({'expr': '1.3e+10'})
self.assertEqual(res[0]['py_expr'], '1.3e+10')
res = parse_general_expression({'expr': '-1.3e-10'})
self.assertEqual(res[0]['py_expr'], '-1.3e-10')
def test_number_parsing(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': '20'})
self.assertEqual(res[0]['py_expr'], '20')
res = parse_general_expression({'expr': '3.14159'})
self.assertEqual(res[0]['py_expr'], '3.14159')
res = parse_general_expression({'expr': '+3.14159'})
self.assertEqual(res[0]['py_expr'], '3.14159')
res = parse_general_expression({'expr': '1.3e+10'})
self.assertEqual(res[0]['py_expr'], '1.3e+10')
res = parse_general_expression({'expr': '-1.3e-10'})
self.assertEqual(res[0]['py_expr'], '-1.3e-10')
def test_smooth_construction_function_no_subscripts(self):
""" Tests translation of 'smooth'
This translation should create a new stateful object to hold the delay elements,
and then pass back a reference to that value
"""
from pysd.vensim2py import parse_general_expression
from pysd.functions import Smooth
from pysd import functions
res = parse_general_expression(
{
'expr': 'SMOOTH(Variable, DelayTime)',
'subs': []
},
{
'Variable': 'variable',
'DelayTime': 'delaytime'
},
)
# check stateful object creation
self.assertEqual(res[1][0]['kind'], 'stateful')
a = eval(res[1][0]['py_expr'])
self.assertIsInstance(a, Smooth)
# check the reference to that variable
self.assertEqual(res[0]['py_expr'], res[1][0]['py_name'] + '()')
def test_subscript_ranges(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'Var D[Range1]'},
{'Var D': 'var_c'},
{'Dim1': ['A', 'B', 'C', 'D', 'E', 'F'],
'Range1': ['C', 'D', 'E']})
self.assertEqual(res[0]['py_expr'], "var_c().loc[{'Dim1': ['C', 'D', 'E']}]")
def test_subscript_ranges(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression(
{'expr': 'Var D[Range1]'}, {'Var D': 'var_c'}, {
'Dim1': ['A', 'B', 'C', 'D', 'E', 'F'],
'Range1': ['C', 'D', 'E']
})
self.assertEqual(res[0]['py_expr'],
"var_c().loc[{'Dim1': ['C', 'D', 'E']}]")
def test_incomplete_expression(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression(
{'expr': 'A FUNCTION OF(Unspecified Eqn,Var A,Var B)'}, {
'Unspecified Eqn': 'unspecified_eqn',
'Var A': 'var_a',
'Var B': 'var_b'
})
self.assertEqual(
res[0]['py_expr'],
"functions.incomplete(unspecified_eqn(), var_a(), var_b())")
def test_function_calls(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'ABS(StockA)'},
{'StockA': 'stocka'})
self.assertEqual(res[0]['py_expr'], 'abs(stocka())')
res = parse_general_expression({'expr': 'If Then Else(A>B, 1, 0)'}, {
'A': 'a',
'B': 'b'
})
self.assertEqual(res[0]['py_expr'],
'functions.if_then_else(a()>b(),1,0)')
# test that function calls are handled properly in arguments
res = parse_general_expression({'expr': 'If Then Else(A>B,1,A)'}, {
'A': 'a',
'B': 'b'
})
self.assertEqual(res[0]['py_expr'],
'functions.if_then_else(a()>b(),1,a())')
def test_subscript_1d_constant(self):
from pysd.vensim2py import parse_general_expression
element = parse_general_expression({'expr': '1, 2, 3',
'subs': ['Dim1']},
{},
{'Dim1': ['A', 'B', 'C'],
'Dim2': ['D', 'E']})
string = element[0]['py_expr']
a = eval(string)
self.assertDictEqual({key: list(val.values) for key, val in a.coords.items()},
{'Dim1': ['A', 'B', 'C']})
self.assertEqual(a.loc[{'Dim1': 'A'}], 1)
def test_subscript_reference(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'Var A[Dim1, Dim2]'},
{'Var A': 'var_a'},
{'Dim1': ['A', 'B'],
'Dim2': ['C', 'D', 'E']})
self.assertEqual(res[0]['py_expr'], 'var_a()')
res = parse_general_expression({'expr': 'Var B[Dim1, C]'},
{'Var B': 'var_b'},
{'Dim1': ['A', 'B'],
'Dim2': ['C', 'D', 'E']})
self.assertEqual(res[0]['py_expr'], "var_b().loc[{'Dim2': ['C']}]")
res = parse_general_expression({'expr': 'Var C[Dim1, C, H]'},
{'Var C': 'var_c'},
{'Dim1': ['A', 'B'],
'Dim2': ['C', 'D', 'E'],
'Dim3': ['F', 'G', 'H', 'I']})
self.assertEqual(res[0]['py_expr'], "var_c().loc[{'Dim2': ['C'], 'Dim3': ['H']}]")
def test_subscript_float_initialization(self):
from pysd.vensim2py import parse_general_expression
element = parse_general_expression({
'expr': '3.32',
'subs': ['Dim1']
}, {}, {
'Dim1': ['A', 'B', 'C'],
'Dim2': ['D', 'E']
})
string = element[0]['py_expr']
a = eval(string)
self.assertDictEqual(
{key: list(val.values)
for key, val in a.coords.items()}, {'Dim1': ['A', 'B', 'C']})
self.assertEqual(a.loc[{'Dim1': 'B'}], 3.32)
def test_stock_construction_function_no_subscripts(self):
""" stock construction should create a stateful variable and reference it """
from pysd.vensim2py import parse_general_expression
from pysd.functions import Integ
from pysd import functions
res = parse_general_expression({'expr': 'INTEG (FlowA, -10)',
'py_name': 'test_stock',
'subs': []},
{'FlowA': 'flowa'})
self.assertEqual(res[1][0]['kind'], 'stateful')
a = eval(res[1][0]['py_expr'])
self.assertIsInstance(a, Integ)
# check the reference to that variable
self.assertEqual(res[0]['py_expr'], res[1][0]['py_name'] + '()')
def test_delay_construction_function_no_subscripts(self):
from pysd.vensim2py import parse_general_expression
from pysd.functions import Delay
from pysd import functions
res = parse_general_expression({'expr': 'DELAY1(Variable, DelayTime)',
'subs': []},
{'Variable': 'variable',
'DelayTime': 'delaytime'},
)
self.assertEqual(res[1][0]['kind'], 'stateful')
a = eval(res[1][0]['py_expr'])
self.assertIsInstance(a, Delay)
# check the reference to that variable
self.assertEqual(res[0]['py_expr'], res[1][0]['py_name'] + '()')
def test_stock_construction_function_no_subscripts(self):
""" stock construction should create a stateful variable and reference it """
from pysd.vensim2py import parse_general_expression
from pysd.functions import Integ
from pysd import functions
res = parse_general_expression(
{
'expr': 'INTEG (FlowA, -10)',
'py_name': 'test_stock',
'subs': []
}, {'FlowA': 'flowa'})
self.assertEqual(res[1][0]['kind'], 'stateful')
a = eval(res[1][0]['py_expr'])
self.assertIsInstance(a, Integ)
# check the reference to that variable
self.assertEqual(res[0]['py_expr'], res[1][0]['py_name'] + '()')
def test_subscript_3d_depth(self):
from pysd.vensim2py import parse_general_expression
element = parse_general_expression(
{
'expr': '1, 2; 3, 4; 5, 6;',
'subs': ['Dim1', 'Dim2']
}, {}, {
'Dim1': ['A', 'B', 'C'],
'Dim2': ['D', 'E']
})
string = element[0]['py_expr']
a = eval(string)
self.assertDictEqual(
{key: list(val.values)
for key, val in a.coords.items()}, {
'Dim1': ['A', 'B', 'C'],
'Dim2': ['D', 'E']
})
self.assertEqual(a.loc[{'Dim1': 'A', 'Dim2': 'D'}], 1)
self.assertEqual(a.loc[{'Dim1': 'B', 'Dim2': 'E'}], 4)
def test_delay_construction_function_no_subscripts(self):
from pysd.vensim2py import parse_general_expression
from pysd.functions import Delay
from pysd import functions
res = parse_general_expression(
{
'expr': 'DELAY1(Variable, DelayTime)',
'subs': []
},
{
'Variable': 'variable',
'DelayTime': 'delaytime'
},
)
self.assertEqual(res[1][0]['kind'], 'stateful')
a = eval(res[1][0]['py_expr'])
self.assertIsInstance(a, Delay)
# check the reference to that variable
self.assertEqual(res[0]['py_expr'], res[1][0]['py_name'] + '()')
def test_smooth_construction_function_no_subscripts(self):
""" Tests translation of 'smooth'
This translation should create a new stateful object to hold the delay elements,
and then pass back a reference to that value
"""
from pysd.vensim2py import parse_general_expression
from pysd.functions import Smooth
from pysd import functions
res = parse_general_expression({'expr': 'SMOOTH(Variable, DelayTime)',
'subs': []},
{'Variable': 'variable',
'DelayTime': 'delaytime'},
)
# check stateful object creation
self.assertEqual(res[1][0]['kind'], 'stateful')
a = eval(res[1][0]['py_expr'])
self.assertIsInstance(a, Smooth)
# check the reference to that variable
self.assertEqual(res[0]['py_expr'], res[1][0]['py_name']+'()')
def test_id_parsing(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'StockA'}, {'StockA': 'stocka'})
self.assertEqual(res[0]['py_expr'], 'stocka()')
def test_id_parsing(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': 'StockA'},
{'StockA': 'stocka'})
self.assertEqual(res[0]['py_expr'], 'stocka()')
def test_arithmetic(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': '-10^3+4'})
self.assertEqual(res[0]['py_expr'], '-10**3+4')
def test_arithmetic(self):
from pysd.vensim2py import parse_general_expression
res = parse_general_expression({'expr': '-10^3+4'})
self.assertEqual(res[0]['py_expr'], '-10**3+4')
