test: refactor graph initialization (#288)

Use the graph initialization util function in the "serialization" tests.

packages/core/__tests__/serialization/serialization.xml.test.ts

@@ -15,7 +15,8 @@ limitations under the License.
 */
 
 import { describe, expect, test } from '@jest/globals';
-import { Cell, Codec, Geometry, Graph, GraphDataModel, Point } from '../../src';
+import { createGraphWithoutContainer } from '../utils';
+import { Cell, Codec, Geometry, GraphDataModel, Point } from '../../src';
 import { getPrettyXml, parseXml } from '../../src/util/xmlUtils';
 
 type ModelExportOptions = {
@@ -111,8 +112,7 @@ describe('import before the export (reproduce https://github.com/maxGraph/maxGra
   });
 
   test('use Graph - reproduced what is described in issue 178', () => {
-    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-    const graph = new Graph(null!);
+    const graph = createGraphWithoutContainer();
     expect(() =>
       new ModelXmlSerializer(graph.getDataModel()).import(xmlFromIssue178)
     ).toThrow(new Error('Invalid x supplied.'));

packages/core/__tests__/utils.ts

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-import { Graph } from '../../../src';
+import { Graph } from '../src';
 
 // no need for a container, we don't check the view here
 export const createGraphWithoutContainer = (): Graph => new Graph(null!);

packages/core/__tests__/view/mixins/ConnectionsMixin.test.ts

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import { expect, test } from '@jest/globals';
-import { createGraphWithoutPlugins } from './utils';
+import { createGraphWithoutPlugins } from '../../utils';
 
 test('The "ConnectionHandler" plugin is not available', () => {
   const graph = createGraphWithoutPlugins();

packages/core/__tests__/view/mixins/EdgeMixin.test.ts

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import { describe, expect, test } from '@jest/globals';
-import { createGraphWithoutContainer } from './utils';
+import { createGraphWithoutContainer } from '../../utils';
 import { Cell, type CellStyle, Geometry } from '../../../src';
 
 describe('insertEdge', () => {

packages/core/__tests__/view/mixins/PanningMixin.test.ts

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import { test } from '@jest/globals';
-import { createGraphWithoutPlugins } from './utils';
+import { createGraphWithoutPlugins } from '../../utils';
 
 test('The "PanningHandler" plugin is not available', () => {
   const graph = createGraphWithoutPlugins();

packages/core/__tests__/view/mixins/TooltipMixin.test.ts

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import { test } from '@jest/globals';
-import { createGraphWithoutPlugins } from './utils';
+import { createGraphWithoutPlugins } from '../../utils';
 import { Cell, CellState } from '../../../src';
 
 test('The "TooltipHandler" plugin is not available', () => {

packages/core/__tests__/view/mixins/VertexMixin.test.ts

@@ -15,7 +15,7 @@ limitations under the License.
 */
 
 import { describe, expect, test } from '@jest/globals';
-import { createGraphWithoutContainer } from './utils';
+import { createGraphWithoutContainer } from '../../utils';
 import { type CellStyle, Geometry } from '../../../src';
 
 describe('insertVertex', () => {