license import { Observable , of } from 'rxjs' ; import { distinct , distinctUntilChanged , distinctUntilKeyChanged } from 'rxjs/operators' ; describe ( 'Observable.distinct' , ( ) => { let log ; let observable1 ; beforeEach ( ( ) => { log = [ ] ; } ) ; it ( 'distinct func callback should run in the correct zone' , ( ) => { const constructorZone1 = Zone . current . fork ( { name : 'Constructor Zone1' } ) ; const subscriptionZone = Zone . current . fork ( { name : 'Subscription Zone' } ) ; const error = new Error ( 'test' ) ; observable1 = constructorZone1 . run ( ( ) => { return of ( 1 , 1 , 2 , 2 , 2 , 1 , 2 , 3 , 4 , 3 , 2 , 1 ) . pipe ( distinct ( ) ) ; } ) ; subscriptionZone . run ( ( ) => { observable1 . subscribe ( ( result ) => { log . push ( result ) ; expect ( Zone . current . name ) . toEqual ( subscriptionZone . name ) ; } , ( err ) => { fail ( 'should not call error' ) ; } , ( ) => { log . push ( 'completed' ) ; expect ( Zone . current . name ) . toEqual ( subscriptionZone . name ) ; } ) ; } ) ; expect ( log ) . toEqual ( [ 1 , 2 , 3 , 4 , 'completed' ] ) ; } ) ; it ( 'distinctUntilChanged func callback should run in the correct zone' , ( ) => { const constructorZone1 = Zone . current . fork ( { name : 'Constructor Zone1' } ) ; const subscriptionZone = Zone . current . fork ( { name : 'Subscription Zone' } ) ; const error = new Error ( 'test' ) ; observable1 = constructorZone1 . run ( ( ) => { return of ( 1 , 1 , 2 , 2 , 2 , 1 , 1 , 2 , 3 , 3 , 4 ) . pipe ( distinctUntilChanged ( ) ) ; } ) ; subscriptionZone . run ( ( ) => { observable1 . subscribe ( ( result ) => { log . push ( result ) ; expect ( Zone . current . name ) . toEqual ( subscriptionZone . name ) ; } , ( err ) => { fail ( 'should not call error' ) ; } , ( ) => { log . push ( 'completed' ) ; expect ( Zone . current . name ) . toEqual ( subscriptionZone . name ) ; } ) ; } ) ; expect ( log ) . toEqual ( [ 1 , 2 , 1 , 2 , 3 , 4 , 'completed' ] ) ; } ) ; it ( 'distinctUntilKeyChanged func callback should run in the correct zone' , ( ) => { const constructorZone1 = Zone . current . fork ( { name : 'Constructor Zone1' } ) ; const subscriptionZone = Zone . current . fork ( { name : 'Subscription Zone' } ) ; const error = new Error ( 'test' ) ; observable1 = constructorZone1 . run ( ( ) => { return of ( { age : 4 , name : 'Foo' } , { age : 7 , name : 'Bar' } , { age : 5 , name : 'Foo' } , { age : 6 , name : 'Foo' } ) . pipe ( distinctUntilKeyChanged ( 'name' ) ) ; } ) ; subscriptionZone . run ( ( ) => { observable1 . subscribe ( ( result ) => { log . push ( result ) ; expect ( Zone . current . name ) . toEqual ( subscriptionZone . name ) ; } , ( err ) => { fail ( 'should not call error' ) ; } , ( ) => { log . push ( 'completed' ) ; expect ( Zone . current . name ) . toEqual ( subscriptionZone . name ) ; } ) ; } ) ; expect ( log ) . toEqual ( [ { age : 4 , name : 'Foo' } , { age : 7 , name : 'Bar' } , { age : 5 , name : 'Foo' } , 'completed' ] ) ; } ) ; } ) ;