Test Case Method Identifier
removeEdge
Test Items
The purpose of this test is to check if the edges added to the multigraph are
removed correctly.
Methods to be used: addNode(), addEdge(), removeEdge(), getEdgeCount().
Input Specification
Add an object of MultiGraph class, three nodes and two edges between the three nodes.
Remove one of the edges.
Output Specification
Assert that the number of edges equals one.