feat(element_injector): allow @Optional for ProtoViewRef

2015-05-15 16:10:16 -07:00
parent 0114cd97b6
commit bb2eda2d15
2 changed files with 17 additions and 0 deletions
@@ -150,6 +150,13 @@ class NeedsProtoViewRef {
  }
 }

+class OptionallyInjectsProtoViewRef {
+  protoViewRef;
+  constructor(@Optional() ref:ProtoViewRef) {
+    this.protoViewRef = ref;
+  }
+}
+
 class NeedsChangeDetectorRef {
  changeDetectorRef;
  constructor(cdr:ChangeDetectorRef) {
@@ -811,6 +818,12 @@ export function main() {
          () => injector([NeedsProtoViewRef])
        ).toThrowError('No provider for ProtoViewRef! (NeedsProtoViewRef -> ProtoViewRef)');
      });
+
+      it('should inject null if there is no ProtoViewRef when the dependency is optional', () => {
+        var inj = injector([OptionallyInjectsProtoViewRef]);
+        var instance = inj.get(OptionallyInjectsProtoViewRef);
+        expect(instance.protoViewRef).toBeNull();
+      });
    });

    describe('directive queries', () => {