fix(snjs): bring back history tests and fix handlinf of error with revisions

packages/snjs/lib/Domain/UseCase/GetRevision/GetRevision.spec.ts

@@ -155,4 +155,18 @@ describe('GetRevision', () => {
 
     expect(result.isFailed()).toBe(true)
   })
+
+  it('should fail if revision manager throws', async () => {
+    revisionManager.getRevision = jest.fn().mockRejectedValue(new Error('error'))
+
+    const useCase = createUseCase()
+
+    const result = await useCase.execute({
+      itemUuid: '00000000-0000-0000-0000-000000000000',
+      revisionUuid: '00000000-0000-0000-0000-000000000000',
+    })
+
+    expect(result.isFailed()).toBe(true)
+    expect(result.getError()).toEqual('Could not get revision: error')
+  })
 })

packages/snjs/lib/Domain/UseCase/GetRevision/GetRevision.ts

@@ -29,8 +29,14 @@ export class GetRevision implements UseCaseInterface<HistoryEntry> {
     }
     const revisionUuid = revisionUuidOrError.getValue()
 
-    const revision = await this.revisionManager.getRevision(itemUuid, revisionUuid)
-    if (revision === null) {
+    let revision
+    try {
+      revision = await this.revisionManager.getRevision(itemUuid, revisionUuid)
+    } catch (error) {
+      return Result.fail(`Could not get revision: ${(error as Error).message}`)
+    }
+
+    if (!revision) {
       return Result.fail('Could not get revision: Revision not found')
     }