!282 增加isTerminating 接口mock

Merge pull request !282 from guyuanzhang/termin

runtime/main/extend/systemplugin/napi/application/abilityContext.js

@@ -404,6 +404,11 @@ export const AbilityContextClass = class AbilityContext extends ContextClass {
         })
       }
     };
+    this.isTerminating = function () {
+      console.warn("Ability.AbilityContext.isTerminating interface mocked in the Previewer. How this interface works on the Previewer" +
+        " may be different from that on a real device.")
+      return paramMock.paramBooleanMock
+    };
   }
 }
 export function mockAbilityContext() {