message: test(graph-utils): adjust addEdge tests
diff: @@ -44,12 +44,19 @@ describe('Graph Utils Testing', () => {
  describe('tests addEdge function', () => {
  it('adds edge', () => {
  - const newEdge = { source: '2', target: '3' };
  + const newEdge = { source: '1', target: '4' };
  const nextElements = addEdge(newEdge, elements);
  expect(nextElements.length).to.be.equal(elements.length + 1);
  });
  + it('tries to add existing edge', () => {
  + const newEdge = { source: '2', target: '3' };
  + const nextElements = addEdge(newEdge, elements);
  +
  + expect(nextElements.length).to.be.equal(elements.length);
  + });
  +
  it('tries to add invalid edge', () => {
  const newEdge = { nosource: '1', notarget: '3' };
  @@ -61,18 +68,6 @@ describe('Graph Utils Testing', () => {
  expect(e.message).to.be.equal("Can't create edge. An edge needs a source and a target.");
  }
  });
  -
  - it('tries to add edge with id that does not exist', () => {
  - const notExistingId = 'does-not-exist';
  - const newEdge = { source: notExistingId, target: '3' };
  -
  - try {
  - addEdge(newEdge, elements);
  - } catch (e) {
  - console.log(e.message);
  - expect(e.message).to.be.equal(`Can't create edge. Node with id=${notExistingId} does not exist.`);
  - }
  - });
  });
  describe('tests removeElements function', () => {
  