def test_DifferentialExtension_all_attrs():
# Test 'unimportant' attributes
DE = DifferentialExtension(exp(x) * log(x), x, handle_first='exp')
assert DE.f == exp(x) * log(x)
assert DE.newf == t0 * t1
assert DE.x == x
assert DE.cases == ['base', 'exp', 'primitive']
assert DE.case == 'primitive'
assert DE.level == -1
assert DE.t == t1 == DE.T[DE.level]
assert DE.d == Poly(1 / x, t1) == DE.D[DE.level]
raises(ValueError, lambda: DE.increment_level())
DE.decrement_level()
assert DE.level == -2
assert DE.t == t0 == DE.T[DE.level]
assert DE.d == Poly(t0, t0) == DE.D[DE.level]
assert DE.case == 'exp'
DE.decrement_level()
assert DE.level == -3
assert DE.t == x == DE.T[DE.level] == DE.x
assert DE.d == Poly(1, x) == DE.D[DE.level]
assert DE.case == 'base'
raises(ValueError, lambda: DE.decrement_level())
DE.increment_level()
DE.increment_level()
assert DE.level == -1
assert DE.t == t1 == DE.T[DE.level]
assert DE.d == Poly(1 / x, t1) == DE.D[DE.level]
assert DE.case == 'primitive'
# Test methods
assert DE.indices('log') == [2]
assert DE.indices('exp') == [1]
def test_DifferentialExtension_all_attrs():
# Test 'unimportant' attributes
DE = DifferentialExtension(exp(x) * log(x), x, handle_first="exp")
assert DE.f == exp(x) * log(x)
assert DE.newf == t0 * t1
assert DE.x == x
assert DE.cases == ["base", "exp", "primitive"]
assert DE.case == "primitive"
assert DE.level == -1
assert DE.t == t1 == DE.T[DE.level]
assert DE.d == Poly(1 / x, t1) == DE.D[DE.level]
raises(ValueError, lambda: DE.increment_level())
DE.decrement_level()
assert DE.level == -2
assert DE.t == t0 == DE.T[DE.level]
assert DE.d == Poly(t0, t0) == DE.D[DE.level]
assert DE.case == "exp"
DE.decrement_level()
assert DE.level == -3
assert DE.t == x == DE.T[DE.level] == DE.x
assert DE.d == Poly(1, x) == DE.D[DE.level]
assert DE.case == "base"
raises(ValueError, lambda: DE.decrement_level())
DE.increment_level()
DE.increment_level()
assert DE.level == -1
assert DE.t == t1 == DE.T[DE.level]
assert DE.d == Poly(1 / x, t1) == DE.D[DE.level]
assert DE.case == "primitive"
# Test methods
assert DE.indices("log") == [2]
assert DE.indices("exp") == [1]
def test_DifferentialExtension_all_attrs():
# Test 'unimportant' attributes
DE = DifferentialExtension(exp(x)*log(x), x, dummy=False, handle_first='exp')
assert DE.f == exp(x)*log(x)
assert DE.newf == t0*t1
assert DE.x == x
assert DE.cases == ['base', 'exp', 'primitive']
assert DE.case == 'primitive'
assert DE.level == -1
assert DE.t == t1 == DE.T[DE.level]
assert DE.d == Poly(1/x, t1) == DE.D[DE.level]
raises(ValueError, lambda: DE.increment_level())
DE.decrement_level()
assert DE.level == -2
assert DE.t == t0 == DE.T[DE.level]
assert DE.d == Poly(t0, t0) == DE.D[DE.level]
assert DE.case == 'exp'
DE.decrement_level()
assert DE.level == -3
assert DE.t == x == DE.T[DE.level] == DE.x
assert DE.d == Poly(1, x) == DE.D[DE.level]
assert DE.case == 'base'
raises(ValueError, lambda: DE.decrement_level())
DE.increment_level()
DE.increment_level()
assert DE.level == -1
assert DE.t == t1 == DE.T[DE.level]
assert DE.d == Poly(1/x, t1) == DE.D[DE.level]
assert DE.case == 'primitive'