[ADF-2405] Added new service to get all process definition versions (#3023)

lib/process-services/process-list/services/process.service.spec.ts

@@ -341,6 +341,65 @@ describe('ProcessService', () => {
 
     });
 
+    describe('process definition versions', () => {
+
+        let getProcessDefinitionVersions: jasmine.Spy;
+
+        beforeEach(() => {
+            getProcessDefinitionVersions = spyOn(alfrescoApi.activiti.processApi, 'getProcessDefinitions')
+                .and
+                .returnValue(Promise.resolve({ data: [ fakeProcessDef, fakeProcessDef ] }));
+        });
+
+        it('should return the correct number of process defs', async(() => {
+            service.getProcessDefinitionVersions().subscribe((defs) => {
+                expect(defs.length).toBe(2);
+            });
+        }));
+
+        it('should return the correct process def data', async(() => {
+            service.getProcessDefinitionVersions().subscribe((defs) => {
+                expect(defs[0].id).toBe(fakeProcessDef.id);
+                expect(defs[0].key).toBe(fakeProcessDef.key);
+                expect(defs[0].name).toBe(fakeProcessDef.name);
+            });
+        }));
+
+        it('should call API with correct parameters when no appId provided', () => {
+            service.getProcessDefinitionVersions();
+            expect(getProcessDefinitionVersions).toHaveBeenCalledWith({});
+        });
+
+        it('should call API with correct parameters when appId provided', () => {
+            const appId = 1;
+            service.getProcessDefinitionVersions(appId);
+            expect(getProcessDefinitionVersions).toHaveBeenCalledWith({
+                appDefinitionId: appId
+            });
+        });
+
+        it('should pass on any error that is returned by the API', async(() => {
+            getProcessDefinitionVersions = getProcessDefinitionVersions.and.returnValue(Promise.reject(mockError));
+            service.getProcessDefinitionVersions().subscribe(
+                () => {},
+                (res) => {
+                    expect(res).toBe(mockError);
+                }
+            );
+        }));
+
+        it('should return a default error if no data is returned by the API', async(() => {
+            getProcessDefinitionVersions = getProcessDefinitionVersions.and.returnValue(Promise.reject(null));
+            service.getProcessDefinitionVersions().subscribe(
+                () => {},
+                (res) => {
+                    expect(res).toBe('Server error');
+                }
+            );
+        }));
+
+    });
+
     describe('process instance tasks', () => {
 
         const processId = '1001';

lib/process-services/process-list/services/process.service.ts

@@ -101,6 +101,17 @@ export class ProcessService {
             .catch(err => this.handleProcessError(err));
     }
 
+    getProcessDefinitionVersions(appId?: number): Observable<ProcessDefinitionRepresentation[]> {
+        const opts = appId ? { appDefinitionId: appId } : {};
+
+        return Observable.fromPromise(
+            this.alfrescoApiService.getInstance().activiti.processApi.getProcessDefinitions(opts)
+        )
+            .map(this.extractData)
+            .map(processDefs => processDefs.map((pd) => new ProcessDefinitionRepresentation(pd)))
+            .catch(err => this.handleProcessError(err));
+    }
+
     startProcess(processDefinitionId: string, name: string, outcome?: string, startFormValues?: FormValues, variables?: ProcessInstanceVariable[]): Observable<ProcessInstance> {
         let startRequest: any = {
             name: name,