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#!/usr/bin/env python
# run tests with: python -m unittest test_model
# or python -m unittest discover
import os
import sys
import unittest
import fityk
class TestCopy(unittest.TestCase):
def setUp(self):
self.ftk = fityk.Fityk()
self.ftk.set_option_as_number("verbosity", -1)
def test_copy_func(self):
self.ftk.execute("%f = Gaussian(~10, ~0, 0.5)")
self.ftk.execute("%g = copy(%f)")
self.assertEqual(self.ftk.get_parameter_count(), 4)
self.ftk.execute("%g.center = ~2.3")
self.assertEqual(self.ftk.get_parameter_count(), 4)
self.ftk.execute("F = %f + %g")
self.ftk.execute("@+ = 0")
self.ftk.execute("@1.F = copy(@0.F)")
self.assertEqual(self.ftk.get_parameter_count(), 8)
self.ftk.execute("@+ = 0")
self.ftk.execute("@2.F = @0.F")
self.assertEqual(self.ftk.get_parameter_count(), 8)
self.ftk.execute("%g.center = ~2.4")
d0_funcs = self.ftk.get_components(0)
d1_funcs = self.ftk.get_components(1)
d2_funcs = self.ftk.get_components(2)
self.assertEqual(d0_funcs[0].get_param_value('center'), 0)
self.assertEqual(d0_funcs[1].get_param_value('center'), 2.4)
self.assertEqual(d1_funcs[0].get_param_value('center'), 0)
self.assertEqual(d1_funcs[1].get_param_value('center'), 2.3)
self.assertEqual(d2_funcs[0].get_param_value('center'), 0)
self.assertEqual(d2_funcs[1].get_param_value('center'), 2.4)
def test_copy_var(self):
self.ftk.execute("%f = Gaussian(~10, ~0, 0.5)")
self.ftk.execute("$v = copy(%f.height)")
v = self.ftk.get_variable("v")
self.assertEqual(v.value(), 10)
class TestBounds(unittest.TestCase):
def setUp(self):
self.ftk = fityk.Fityk()
self.ftk.set_option_as_number("verbosity", -1)
self.ftk.execute("$a = ~3.14 [-1:4.5]")
def test_basic(self):
a = self.ftk.get_variable("a")
self.assertEqual(a.value(), 3.14)
self.assertEqual(a.domain.lo, -1)
self.assertEqual(a.domain.hi, 4.5)
self.assertFalse(a.domain.lo_inf())
self.assertFalse(a.domain.hi_inf())
def test_change_value(self):
a = self.ftk.get_variable("a")
self.assertRaises(fityk.SyntaxError, self.ftk.execute, "$a = ~")
self.assertRaises(fityk.SyntaxError, self.ftk.execute, "$a = ~~9")
self.assertRaises(fityk.SyntaxError, self.ftk.execute, "$a = ~-sin(2)")
self.ftk.execute("$a = ~{-sin(2)}")
self.ftk.execute("$a = ~-0.15")
self.assertEqual(a.domain.lo, -1)
self.assertEqual(a.domain.hi, 4.5)
self.ftk.execute("$a = ~3.15 [:77]")
self.assertTrue(a.domain.lo_inf())
self.assertEqual(a.domain.hi, 77)
self.ftk.execute("$a = ~3.15 [:]")
self.assertTrue(a.domain.lo_inf())
self.assertTrue(a.domain.hi_inf())
def test_assign_var(self):
self.ftk.execute("$b = $a") # b is compound variable
b = self.ftk.get_variable("b")
self.assertEqual(b.value(), 3.14)
self.assertTrue(b.domain.lo_inf())
self.assertTrue(b.domain.hi_inf())
self.ftk.execute("$c = ~0.1 [0.0:0.2]")
self.ftk.execute("$c = $a")
c = self.ftk.get_variable("c")
self.assertEqual(c.value(), 3.14)
self.assertEqual(c.domain.lo, 0.0)
self.assertEqual(c.domain.hi, 0.2)
def test_assign_value(self):
self.ftk.execute("$b = ~{$a}")
b = self.ftk.get_variable("b")
self.assertEqual(b.value(), 3.14)
self.assertTrue(b.domain.lo_inf())
self.assertTrue(b.domain.hi_inf())
def test_copy_var(self):
self.ftk.execute("$b = copy($a)")
b = self.ftk.get_variable("b")
self.assertEqual(b.value(), 3.14)
self.assertEqual(b.domain.lo, -1)
self.assertEqual(b.domain.hi, 4.5)
class TestDefaultValues(unittest.TestCase):
def setUp(self):
self.ftk = fityk.Fityk()
self.ftk.set_option_as_number("verbosity", -1)
def test_pseudovoigt_shape_domain(self):
self.ftk.execute("%f = PseudoVoigt(height=~11, center=~12, hwhm=~13)")
f = self.ftk.get_function('f')
shape = self.ftk.get_variable(f.var_name('shape'))
self.assertEqual(shape.value(), 0.5)
self.assertEqual(shape.domain.lo, 0)
self.assertEqual(shape.domain.hi, 1)
def test_defval_bounds(self):
self.ftk.execute("define My(a=3, b=0.1[-1:1]) = a*exp(b*x)")
self.ftk.execute("%f=My(a=3)")
self.assertEqual(self.ftk.get_variable("%f.b").name, "_2")
a = self.ftk.get_variable("_2")
self.assertEqual(a.value(), 0.1)
self.assertEqual(a.domain.lo, -1)
self.assertEqual(a.domain.hi, 1)
class TestBoxConstraints(unittest.TestCase):
def setUp(self):
self.ftk = fityk.Fityk()
self.ftk.set_option_as_number("verbosity", -1)
xx = [(n-5)/2. for n in range(25)]
yy = [-7+3*x for x in xx]
self.ftk = fityk.Fityk()
self.ftk.set_option_as_number("verbosity", -1)
self.ftk.load_data(0, xx, yy, [1]*len(xx), "line")
self.ftk.execute("F = Linear(~0, ~0[:2.5])")
self.methods = ["mpfit"]
if self.ftk.get_info("compiler"):
self.methods += ["nlopt_lbfgs", "nlopt_nm", "nlopt_bobyqa",
"nlopt_sbplx"]
def fit(self, fitting_method):
self.ftk.set_option_as_string("fitting_method", fitting_method)
self.ftk.execute("fit")
return self.ftk.calculate_expr("F[0].a1")
def test_box(self):
for m in self.methods:
self.assertAlmostEqual(self.fit(m), 2.5)
def test_no_box(self):
self.ftk.set_option_as_number("box_constraints", 0)
for m in self.methods:
self.assertAlmostEqual(self.fit(m), 3.0)
if __name__ == '__main__':
unittest.main()
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