write tests

Author: loreanvictor

src/main/services/patcher/patch-verifier.ts

@@ -73,7 +73,7 @@ export class PatchVerifier {
    * @param patch
    * @returns the signed patch (to be sent to the server)
    */
-  public sign(patch: Patch) {
+  public sign(patch: Patch): SignedPatch {
     return patch.map((op) => this.signOperation(op));
   }
 

src/tests/unit/services/patcher/patcher-reducer-test.ts

@@ -16,16 +16,27 @@ describe('test patcher reducer.', () => {
 
   test('calls given transform function for applying the patch.', () => {
     const cb = jest.fn((x) => ({ y: x.x }));
+    const inv = (x: any) => ({ x: x.y });
 
     const patcher = new Patcher();
     patcher.initialize({});
 
-    const reducer = createPatcherReducer(patcher, { transform: cb });
+    const reducer = createPatcherReducer(patcher, { transform: cb, transformInverse: inv });
     const nextState = reducer({ y: 41 }, PatcherRepository.patch([{ op: 'add', path: '/x', value: 42 }]));
 
     expect(nextState).toEqual({ y: 42 });
   });
 
+  test('passes the state to the patcher.', () => {
+    const patcher = new Patcher();
+    patcher.initialize({});
+
+    const reducer = createPatcherReducer(patcher);
+    const nextState = reducer({ y: 41 }, PatcherRepository.patch([{ op: 'add', path: '/x', value: 42 }]));
+
+    expect(nextState).toEqual({ x: 42, y: 41 });
+  });
+
   test('calls given merge function for applying the patch.', () => {
     const cb = jest.fn((x, y) => ({ ...x, ...y }));
 

src/tests/unit/services/patcher/patcher-test.ts

@@ -170,4 +170,11 @@ describe('patcher class.', () => {
     const res3 = patcher.patch([{ op: 'replace', path: '/x', value: 46, hash: '123' }]);
     expect(res3.patched).toBe(false);
   });
+
+  test('can update snapshot on patch.', () => {
+    const patcher = new Patcher();
+    patcher.initialize({ x: 42, y: 43 });
+    const res = patcher.patch([{ op: 'replace', path: '/x', value: 44 }], { y: 45 });
+    expect(res.result).toEqual({ x: 44, y: 45 });
+  });
 });