diff --git a/packages/angular_devkit/build_angular/test/hello-world-app/src/test.ts b/packages/angular_devkit/build_angular/test/hello-world-app/src/test.ts
index d2dd986c8a58..149a98c3c157 100644
--- a/packages/angular_devkit/build_angular/test/hello-world-app/src/test.ts
+++ b/packages/angular_devkit/build_angular/test/hello-world-app/src/test.ts
@@ -23,10 +23,10 @@ declare const require: {
 };
 
 // First, initialize the Angular testing environment.
-getTestBed().initTestEnvironment(
-  BrowserDynamicTestingModule,
-  platformBrowserDynamicTesting(),
-);
+getTestBed().initTestEnvironment(BrowserDynamicTestingModule, platformBrowserDynamicTesting(), {
+  errorOnUnknownElements: true,
+  errorOnUnknownProperties: true
+});
 // Then we find all the tests.
 const context = require.context('./', true, /\.spec\.ts$/);
 // And load the modules.
diff --git a/packages/angular_devkit/build_angular/test/hello-world-lib/projects/lib/src/test.ts b/packages/angular_devkit/build_angular/test/hello-world-lib/projects/lib/src/test.ts
index 2e06d42dae8a..a24258af75ba 100644
--- a/packages/angular_devkit/build_angular/test/hello-world-lib/projects/lib/src/test.ts
+++ b/packages/angular_devkit/build_angular/test/hello-world-lib/projects/lib/src/test.ts
@@ -24,10 +24,10 @@ declare const require: {
 };
 
 // First, initialize the Angular testing environment.
-getTestBed().initTestEnvironment(
-  BrowserDynamicTestingModule,
-  platformBrowserDynamicTesting(),
-);
+getTestBed().initTestEnvironment(BrowserDynamicTestingModule, platformBrowserDynamicTesting(), {
+  errorOnUnknownElements: true,
+  errorOnUnknownProperties: true
+});
 // Then we find all the tests.
 const context = require.context('./', true, /\.spec\.ts$/);
 // And load the modules.
diff --git a/packages/schematics/angular/application/files/src/test.ts.template b/packages/schematics/angular/application/files/src/test.ts.template
index c04c876075f9..cac5aa3ea352 100644
--- a/packages/schematics/angular/application/files/src/test.ts.template
+++ b/packages/schematics/angular/application/files/src/test.ts.template
@@ -15,10 +15,10 @@ declare const require: {
 };
 
 // First, initialize the Angular testing environment.
-getTestBed().initTestEnvironment(
-  BrowserDynamicTestingModule,
-  platformBrowserDynamicTesting(),
-);
+getTestBed().initTestEnvironment(BrowserDynamicTestingModule, platformBrowserDynamicTesting(), {
+  errorOnUnknownElements: true,
+  errorOnUnknownProperties: true
+});
 
 // Then we find all the tests.
 const context = require.context('./', true, /\.spec\.ts$/);
diff --git a/packages/schematics/angular/library/files/src/test.ts.template b/packages/schematics/angular/library/files/src/test.ts.template
index 5775317abc9f..29e4db3829fe 100644
--- a/packages/schematics/angular/library/files/src/test.ts.template
+++ b/packages/schematics/angular/library/files/src/test.ts.template
@@ -16,10 +16,10 @@ declare const require: {
 };
 
 // First, initialize the Angular testing environment.
-getTestBed().initTestEnvironment(
-  BrowserDynamicTestingModule,
-  platformBrowserDynamicTesting(),
-);
+getTestBed().initTestEnvironment(BrowserDynamicTestingModule, platformBrowserDynamicTesting(), {
+  errorOnUnknownElements: true,
+  errorOnUnknownProperties: true
+});
 
 // Then we find all the tests.
 const context = require.context('./', true, /\.spec\.ts$/);