示例#1
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def test_divide():
	# real = (self.r*other)/other**2
 #    Dual = (self.d*other)/other**2
	z = sj.Dual(1.0, 4.0) 
	result=z/2.0
	assert result.r==0.5
	assert result.d==2.00
示例#2
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def test_repr3(): 
	x=sj.Dual(1,2)
	z=x.__repr__()
	assert z=='1.00 + eps 2.00'
示例#3
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def test_repr2():
 	x=sj.Dual(-1, -2)
 	z=x.__repr__()
 	assert z=='-1.00 - eps 2.00'
示例#4
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def test_Dual():

	z= sj.Dual(1.0,2.0)
	assert z.r==1.0
	assert z.d==2.0
示例#5
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def test_repr():
	x=sj.Dual([1,2],[3,4])
	z=x.__repr__()
	assert z=='[1.00 2.00] + eps [3.00 4.00]'
示例#6
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def test_sqrt():
	x=sj.Dual(4.0, 1.0)
	z=x.sqrt()
	assert z.r==2.0
	assert z.d==0.25
示例#7
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def test_pow_negative_case():
	x=sj.Dual(-1.0, 2.0)
	y=sj.Dual(3.0, 4.0)
	with pytest.raises(Exception):
		x**(y)
示例#8
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def test_cos():
	x=sj.Dual(3.0, 4.0)
	z=x.cos()
	assert z.r==np.cos(3.0)
	assert z.d==-4.0*np.sin(3.0)
示例#9
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def test_sin():
	x=sj.Dual(3.0, 4.0)
	z = x.sin()
	assert z.r==np.sin(3.0)
	assert z.d==4*np.cos(3.0)
示例#10
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def test_multiply():
	x=sj.Dual(2.0, 4.0) 
	y=sj.Dual(1.0,1.0)
	z=x * y 	 
	assert z.r==2.00
	assert z.d==6.00
示例#11
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def test_add():
	x=sj.Dual(1.0, 2.0); 
	y=sj.Dual(3.0, 4.0)
	z= x+y
	assert z.r == 4.00
	assert z.d == 6.00