Ivy: unknown element test failures with `NO_ERRORS_SCHEMA`

🐞 bug report

Affected Package

The issue is caused by package @angular/core

Is this a regression?

Let’s say it works with View Engine.

Description

We used to test certain components sometimes with NO_ERRORS_SCHEMA to not have to bring in all the existing child components into the testing module. Also we mock our services to not use the HttpClient but return directly an observable via rxjs’s of. There seem to be cases where this will fail in Ivy with an unknown element exception for the child components in the template (but that’s why I am using NO_ERRORS_SCHEMA…) when accessing the service function within ngOnInit in the parent function.

🔬 Minimal Reproduction

I have made a minimal repo to show the behavior:

https://github.com/thecp/angular-ivy-test-failures

🔥 Exception or Error

Error: Template error: Can't bind to 'entry' since it isn't a known property of 'tr'.
            at createUnknownPropertyError (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:15129:1)
            at validateAgainstUnknownProperties (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:15068:1)
            at elementPropertyInternal (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:14973:1)
            at ɵɵproperty (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:16578:1)
            at AppComponent_tr_1_Template (ng:///AppComponent.js:10:5)
            at executeTemplate (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:14545:1)
            at renderEmbeddedTemplate (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:14469:1)
            at refreshDynamicEmbeddedViews (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:15702:1)
            at refreshDescendantViews (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:14115:1)
            at checkView (http://localhost:9876/node_modules/@angular/core/__ivy_ngcc__/fesm2015/core.js:15969:1)

🌍 Your Environment

Angular Version:

Angular CLI: 8.2.0-next.1
Node: 10.16.0
OS: linux x64
Angular: 8.2.0-next.2
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.802.0-next.1
@angular-devkit/build-angular     0.802.0-next.1
@angular-devkit/build-optimizer   0.802.0-next.1
@angular-devkit/build-webpack     0.802.0-next.1
@angular-devkit/core              8.2.0-next.1
@angular-devkit/schematics        8.2.0-next.1
@angular/cli                      8.2.0-next.1
@ngtools/webpack                  8.2.0-next.1
@schematics/angular               8.2.0-next.1
@schematics/update                0.802.0-next.1
rxjs                              6.5.2
typescript                        3.4.5
webpack                           4.35.3

[JoostK]

Hi @thecp,

The usage of schemas is not supported with Ivy at the moment, there’s a PR in progress here in #30301.

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