fix api and test

Author: osmanmesutozcan

src/transaction/predicate-impl.ts

@@ -90,7 +90,13 @@ export class PredicateImpl<T = any, U = any> implements IPredicate<T, U> {
   }
 
   deleteAll(): IPredicate<T, U> {
-    this.delete(this._data);
+    const deleteDiff = this._diff.deletes.get(this)!;
+
+    for (const node of this._data) {
+      deleteDiff.add(node);
+    }
+
+    this._data.splice(0, this._data.length);
     return this;
   }
 

tests/delete.spec.ts

@@ -29,6 +29,10 @@ describe('Delete handling', function() {
           {
             uid: '0x3',
             'Person.name': 'Kamil'
+          },
+          {
+            uid: '0x4',
+            'Person.name': 'Adam'
           }
         ]
       }
@@ -46,7 +50,7 @@ describe('Delete handling', function() {
     transaction.tree[0].friends.delete(jane);
 
     // XXX: here kamil is not deleted in the friends predicate
-    expect(transaction.tree[0].friends.get().length).toBe(1);
+    expect(transaction.tree[0].friends.get().length).toBe(2);
 
     expect(transaction.getDeleteNQuadsString()).toEqual(
       `<0x3> * * .
@@ -63,6 +67,8 @@ describe('Delete handling', function() {
 <0x2> * * .
 <0x1> <Person.friends> <0x2> .
 <0x1> <Person.friends> <0x3> .
+<0x4> * * .
+<0x1> <Person.friends> <0x4> .
 `
     );
   });