1test number zero : default constructor and string converter
2symmetricTensor0 =  class=SymmetricTensor implementation=class=TensorImplementation name=Unnamed rows=0 columns=0 sheets=0 values=[]
3test number one : constructor with size, operator() and string converter
4symmetricTensor1 =  class=SymmetricTensor implementation=class=TensorImplementation name=Unnamed rows=2 columns=2 sheets=3 values=[1,2,0,3,4,5,0,6,7,8,0,9]
5values = 1.000000   2.000000   2.000000   3.000000   4.000000   5.000000   5.000000   6.000000   7.000000   8.000000   8.000000   9.000000
6test number two : copy constructor and string converter
7symmetricTensor2 =  class=SymmetricTensor implementation=class=TensorImplementation name=Unnamed rows=2 columns=2 sheets=3 values=[1,2,0,3,4,5,0,6,7,8,0,9]
8test number three : get dimensions methods
9symmetricTensor1's nbRows =  2
10symmetricTensor1's nbColumns =  2
11symmetricTensor1's nbSheets =  3
12test number four : assignment method
13test number five : isEmpty method
14symmetricTensor1 is empty =  False
15symmetricTensor0 is empty =  True
16symmetricTensor5 is empty =  True
17symmetricTensor6 is empty =  True
18symmetricTensor1 =  class=SymmetricTensor implementation=class=TensorImplementation name=Unnamed rows=2 columns=2 sheets=3 values=[1,2,0,3,4,5,0,6,7,8,0,9]
19symmetricTensor1.getSheet(1) =  class=SymmetricMatrix dimension=2 implementation=class=MatrixImplementation name=Unnamed rows=2 columns=2 values=[4,5,5,6]
20sheet2 =  class=SymmetricMatrix dimension=2 implementation=class=MatrixImplementation name=Unnamed rows=2 columns=2 values=[0.4,0.5,0,0.6]
21symmetricTensor1 =  class=SymmetricTensor implementation=class=TensorImplementation name=Unnamed rows=2 columns=2 sheets=3 values=[1,2,0,3,0.4,0.5,0.5,0.6,7,8,0,9]
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