Test Case Method Identifier
addNode
Test Items
The purpose of these tests is to check if nodes are added correctly to the graph with a specified id, that they are created correctly and exist in the graph with given name.
Methods to be used: addNode(), getNodeCount(), getNode(), getId()
Input Specification
Add an object of MultiGraph class and three nodes.
Output Specification
Assert that the number of nodes is three. Assert that the added node objects are not null and that their ids are the ones assigned to them when adding them.