US02: GetEdgeById
2 Scenarios
User Story
Scenario: Get an existing edge by ID
Given the database contains an edge
When I send a GET request to /api/edges/{id}
#UAC01
Then the response status should be 200 OK
#UAC02
And the response should contain the edge id
#UAC03
And the response should include the edge sourceId
#UAC04
And the response should include the edge targetId