diff --git a/packages/compiler-cli/test/compliance/r3_view_compiler_i18n_spec.ts b/packages/compiler-cli/test/compliance/r3_view_compiler_i18n_spec.ts
index 6e80d0c149..6ee98313b1 100644
--- a/packages/compiler-cli/test/compliance/r3_view_compiler_i18n_spec.ts
+++ b/packages/compiler-cli/test/compliance/r3_view_compiler_i18n_spec.ts
@@ -389,7 +389,7 @@ describe('i18n support in the view compiler', () => {
     it('should correctly bind to context in nested template', () => {
       const input = `
         <div *ngFor="let outer of items">
-          <div i18n-title="m|d" title="different scope {{ outer | uppercase }}">
+          <div i18n-title="m|d" title="different scope {{ outer | uppercase }}"></div>
         </div>
       `;
 
@@ -518,7 +518,7 @@ describe('i18n support in the view compiler', () => {
     it('should correctly bind to context in nested template', () => {
       const input = `
         <div *ngFor="let outer of items">
-          <div i18n-title="m|d" title="different scope {{ outer | uppercase }}">
+          <div i18n-title="m|d" title="different scope {{ outer | uppercase }}"></div>
         </div>
       `;
 
@@ -1347,7 +1347,7 @@ describe('i18n support in the view compiler', () => {
       verify(input, output);
     });
 
-    it('should be able to be child elements inside i18n block', () => {
+    it('should be able to act as child elements inside i18n block', () => {
       const input = `
         <div i18n>
           <ng-template>Template content: {{ valueA | uppercase }}</ng-template>
diff --git a/packages/core/src/render3/i18n.ts b/packages/core/src/render3/i18n.ts
index f0d6142ffd..386af20d0a 100644
--- a/packages/core/src/render3/i18n.ts
+++ b/packages/core/src/render3/i18n.ts
@@ -504,7 +504,7 @@ function appendI18nNode(tNode: TNode, parentTNode: TNode, previousTNode: TNode |
  * @publicAPI
  */
 export function i18nPostprocess(
-    message: string, replacements: {[key: string]: (string | string[])}): string {
+    message: string, replacements: {[key: string]: (string | string[])} = {}): string {
   //
   // Step 1: resolve all multi-value cases (like [�*1:1��#2:1�|�#4:1�|�5�])
   //
diff --git a/packages/core/test/i18n_integration_spec.ts b/packages/core/test/i18n_integration_spec.ts
new file mode 100644
index 0000000000..0c13466735
--- /dev/null
+++ b/packages/core/test/i18n_integration_spec.ts
@@ -0,0 +1,480 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {Component, Directive, TemplateRef, ViewContainerRef} from '@angular/core';
+import {TestBed} from '@angular/core/testing';
+import {expect} from '@angular/platform-browser/testing/src/matchers';
+import {fixmeIvy, onlyInIvy, polyfillGoogGetMsg} from '@angular/private/testing';
+
+@Directive({
+  selector: '[tplRef]',
+})
+class DirectiveWithTplRef {
+  constructor(public vcRef: ViewContainerRef, public tplRef: TemplateRef<{}>) {}
+  ngOnInit() { this.vcRef.createEmbeddedView(this.tplRef, {}); }
+}
+
+@Component({selector: 'my-comp', template: ''})
+class MyComp {
+  name = 'John';
+  items = ['1', '2', '3'];
+  visible = true;
+  age = 20;
+  count = 2;
+  otherLabel = 'other label';
+}
+
+const TRANSLATIONS: any = {
+  'one': 'un',
+  'two': 'deux',
+  'more than two': 'plus que deux',
+  'ten': 'dix',
+  'twenty': 'vingt',
+  'other': 'autres',
+  'Hello': 'Bonjour',
+  'Hello {$interpolation}': 'Bonjour {$interpolation}',
+  'Bye': 'Au revoir',
+  'Item {$interpolation}': 'Article {$interpolation}',
+  '\'Single quotes\' and "Double quotes"': '\'Guillemets simples\' et "Guillemets doubles"',
+  'My logo': 'Mon logo',
+  '{$startTagSpan}My logo{$tagImg}{$closeTagSpan}':
+      '{$startTagSpan}Mon logo{$tagImg}{$closeTagSpan}',
+  '{$startTagNgTemplate} Hello {$closeTagNgTemplate}{$startTagNgContainer} Bye {$closeTagNgContainer}':
+      '{$startTagNgTemplate} Bonjour {$closeTagNgTemplate}{$startTagNgContainer} Au revoir {$closeTagNgContainer}',
+  '{$startTagNgTemplate}{$startTagSpan}Hello{$closeTagSpan}{$closeTagNgTemplate}{$startTagNgContainer}{$startTagSpan_1}Hello{$closeTagSpan}{$closeTagNgContainer}':
+      '{$startTagNgTemplate}{$startTagSpan}Bonjour{$closeTagSpan}{$closeTagNgTemplate}{$startTagNgContainer}{$startTagSpan_1}Bonjour{$closeTagSpan}{$closeTagNgContainer}',
+  '{VAR_SELECT, select, 10 {ten} 20 {twenty} other {other}}':
+      '{VAR_SELECT, select, 10 {dix} 20 {vingt} other {autres}}',
+  '{VAR_SELECT, select, 10 {10 - {$startBoldText}ten{$closeBoldText}} 20 {20 - {$startItalicText}twenty{$closeItalicText}} other {{$startTagDiv}{$startUnderlinedText}other{$closeUnderlinedText}{$closeTagDiv}}}':
+      '{VAR_SELECT, select, 10 {10 - {$startBoldText}dix{$closeBoldText}} 20 {20 - {$startItalicText}vingt{$closeItalicText}} other {{$startTagDiv}{$startUnderlinedText}autres{$closeUnderlinedText}{$closeTagDiv}}}',
+  '{VAR_SELECT_2, select, 10 {ten - {VAR_SELECT, select, 1 {one} 2 {two} other {more than two}}} 20 {twenty - {VAR_SELECT_1, select, 1 {one} 2 {two} other {more than two}}} other {other}}':
+      '{VAR_SELECT_2, select, 10 {dix - {VAR_SELECT, select, 1 {un} 2 {deux} other {plus que deux}}} 20 {vingt - {VAR_SELECT_1, select, 1 {un} 2 {deux} other {plus que deux}}} other {autres}}'
+};
+
+const getFixtureWithOverrides = (overrides = {}) => {
+  TestBed.overrideComponent(MyComp, {set: overrides});
+  const fixture = TestBed.createComponent(MyComp);
+  fixture.detectChanges();
+  return fixture;
+};
+
+onlyInIvy('Ivy i18n logic').describe('i18n', function() {
+
+  beforeEach(() => {
+    polyfillGoogGetMsg(TRANSLATIONS);
+    TestBed.configureTestingModule({declarations: [MyComp, DirectiveWithTplRef]});
+  });
+
+  describe('attributes', () => {
+    it('should translate static attributes', () => {
+      const title = 'Hello';
+      const template = `<div i18n-title="m|d" title="${title}"></div>`;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element.title).toBe('Bonjour');
+    });
+
+    it('should support interpolation', () => {
+      const title = 'Hello {{ name }}';
+      const template = `<div i18n-title="m|d" title="${title}"></div>`;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element.title).toBe('Bonjour John');
+    });
+
+    it('should support interpolation with custom interpolation config', () => {
+      const title = 'Hello {% name %}';
+      const template = `<div i18n-title="m|d" title="${title}"></div>`;
+      const interpolation = ['{%', '%}'] as[string, string];
+      const fixture = getFixtureWithOverrides({template, interpolation});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element.title).toBe('Bonjour John');
+    });
+
+    fixmeIvy('FW-903: i18n attributes in nested templates throws at runtime')
+        .it('should correctly bind to context in nested template', () => {
+          const title = 'Item {{ id }}';
+          const template = `
+            <div *ngFor='let id of items'>
+              <div i18n-title='m|d' title='${title}'></div>
+            </div>
+          `;
+          const fixture = getFixtureWithOverrides({template});
+
+          const element = fixture.nativeElement;
+          for (let i = 0; i < element.children.length; i++) {
+            const child = element.children[i];
+            expect((child as any).innerHTML).toBe(`<div title="Article ${i + 1}"></div>`);
+          }
+        });
+
+    fixmeIvy('FW-904: i18n attributes placed on i18n root node don\'t work')
+        .it('should work correctly when placed on i18n root node', () => {
+          const title = 'Hello {{ name }}';
+          const content = 'Hello';
+          const template = `
+            <div i18n i18n-title="m|d" title="${title}">${content}</div>
+          `;
+          const fixture = getFixtureWithOverrides({template});
+
+          const element = fixture.nativeElement.firstChild;
+          expect(element.title).toBe('Bonjour John');
+          expect(element).toHaveText('Bonjour');
+        });
+
+    it('should add i18n attributes on self-closing tags', () => {
+      const title = 'Hello {{ name }}';
+      const template = `<img src="logo.png" i18n-title title="${title}">`;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element.title).toBe('Bonjour John');
+    });
+  });
+
+  describe('nested nodes', () => {
+    it('should handle static content', () => {
+      const content = 'Hello';
+      const template = `<div i18n>${content}</div>`;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element).toHaveText('Bonjour');
+    });
+
+    it('should support interpolation', () => {
+      const content = 'Hello {{ name }}';
+      const template = `<div i18n>${content}</div>`;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element).toHaveText('Bonjour John');
+    });
+
+    it('should support interpolation with custom interpolation config', () => {
+      const content = 'Hello {% name %}';
+      const template = `<div i18n>${content}</div>`;
+      const interpolation = ['{%', '%}'] as[string, string];
+      const fixture = getFixtureWithOverrides({template, interpolation});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element).toHaveText('Bonjour John');
+    });
+
+    it('should properly escape quotes in content', () => {
+      const content = `'Single quotes' and "Double quotes"`;
+      const template = `<div i18n>${content}</div>`;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element).toHaveText('\'Guillemets simples\' et "Guillemets doubles"');
+    });
+
+    it('should correctly bind to context in nested template', () => {
+      const content = 'Item {{ id }}';
+      const template = `
+          <div *ngFor='let id of items'>
+            <div i18n>${content}</div>
+          </div>
+        `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement;
+      for (let i = 0; i < element.children.length; i++) {
+        const child = element.children[i];
+        expect(child).toHaveText(`Article ${i + 1}`);
+      }
+    });
+
+    it('should handle i18n attributes inside i18n section', () => {
+      const title = 'Hello {{ name }}';
+      const template = `
+          <div i18n>
+            <div i18n-title="m|d" title="${title}"></div>
+          </div>
+        `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      const content = `<div title="Bonjour John"></div>`;
+      expect(element.innerHTML).toBe(content);
+    });
+
+    it('should handle i18n blocks in nested templates', () => {
+      const content = 'Hello {{ name }}';
+      const template = `
+        <div *ngIf="visible">
+          <div i18n>${content}</div>
+        </div>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element.children[0]).toHaveText('Bonjour John');
+    });
+
+    it('should ignore i18n attributes on self-closing tags', () => {
+      const template = '<img src="logo.png" i18n>';
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement;
+      expect(element.innerHTML).toBe(template.replace(' i18n', ''));
+    });
+
+    it('should handle i18n attribute with directives', () => {
+      const content = 'Hello {{ name }}';
+      const template = `
+        <div *ngIf="visible" i18n>${content}</div>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element).toHaveText('Bonjour John');
+    });
+  });
+
+  describe('ng-container and ng-template support', () => {
+    it('should handle single translation message within ng-container', () => {
+      const content = 'Hello {{ name }}';
+      const template = `
+        <ng-container i18n>${content}</ng-container>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element).toHaveText('Bonjour John');
+    });
+
+    it('should handle single translation message within ng-template', () => {
+      const content = 'Hello {{ name }}';
+      const template = `
+        <ng-template i18n tplRef>${content}</ng-template>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement;
+      expect(element).toHaveText('Bonjour John');
+    });
+
+    it('should be able to act as child elements inside i18n block (plain text content)', () => {
+      const hello = 'Hello';
+      const bye = 'Bye';
+      const template = `
+        <div i18n>
+          <ng-template tplRef>
+            ${hello}
+          </ng-template>
+          <ng-container>
+            ${bye}
+          </ng-container>
+        </div>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element.textContent.replace(/\s+/g, ' ').trim()).toBe('Bonjour Au revoir');
+    });
+
+    fixmeIvy(
+        'FW-910: Invalid placeholder structure generated when using <ng-template> with content that contains tags')
+        .it('should be able to act as child elements inside i18n block (text + tags)', () => {
+          const content = 'Hello';
+          const template = `
+            <div i18n>
+              <ng-template tplRef>
+                <span>${content}</span>
+              </ng-template>
+              <ng-container>
+                <span>${content}</span>
+              </ng-container>
+            </div>
+          `;
+          const fixture = getFixtureWithOverrides({template});
+
+          const element = fixture.nativeElement;
+          const spans = element.getElementsByTagName('span');
+          for (let i = 0; i < spans.length; i++) {
+            const child = spans[i];
+            expect((child as any).innerHTML).toBe('Bonjour');
+          }
+        });
+
+    it('should handle self-closing tags as content', () => {
+      const label = 'My logo';
+      const content = `${label}<img src="logo.png" title="Logo">`;
+      const template = `
+        <ng-container i18n>
+          <span>${content}</span>
+        </ng-container>
+        <ng-template i18n tplRef>
+          <span>${content}</span>
+        </ng-template>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement;
+      const spans = element.getElementsByTagName('span');
+      for (let i = 0; i < spans.length; i++) {
+        const child = spans[i];
+        expect(child).toHaveText('Mon logo');
+      }
+    });
+  });
+
+  describe('ICU logic', () => {
+    it('should handle single ICUs', () => {
+      const template = `
+        <div i18n>{age, select, 10 {ten} 20 {twenty} other {other}}</div>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement;
+      expect(element).toHaveText('vingt');
+    });
+
+    it('should support ICUs generated outside of i18n blocks', () => {
+      const template = `
+        <div>{age, select, 10 {ten} 20 {twenty} other {other}}</div>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement;
+      expect(element).toHaveText('vingt');
+    });
+
+    it('should support interpolation', () => {
+      const template = `
+        <div i18n>{age, select, 10 {ten} other {{{ otherLabel }}}}</div>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement;
+      expect(element).toHaveText(fixture.componentInstance.otherLabel);
+    });
+
+    it('should support interpolation with custom interpolation config', () => {
+      const template = `
+        <div i18n>{age, select, 10 {ten} other {{% otherLabel %}}}</div>
+      `;
+      const interpolation = ['{%', '%}'] as[string, string];
+      const fixture = getFixtureWithOverrides({template, interpolation});
+
+      const element = fixture.nativeElement;
+      expect(element).toHaveText(fixture.componentInstance.otherLabel);
+    });
+
+    it('should handle ICUs with HTML tags inside', () => {
+      const template = `
+        <div i18n>
+          {age, select, 10 {10 - <b>ten</b>} 20 {20 - <i>twenty</i>} other {<div class="other"><u>other</u></div>}}
+        </div>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      const italicTags = element.getElementsByTagName('i');
+      expect(italicTags.length).toBe(1);
+      expect(italicTags[0].innerHTML).toBe('vingt');
+    });
+
+    fixmeIvy('FW-905: Multiple ICUs in one i18n block are not processed')
+        .it('should handle multiple ICUs in one block', () => {
+          const template = `
+            <div i18n>
+              {age, select, 10 {ten} 20 {twenty} other {other}} - 
+              {count, select, 1 {one} 2 {two} other {more than two}}
+            </div>
+          `;
+          const fixture = getFixtureWithOverrides({template});
+
+          const element = fixture.nativeElement.firstChild;
+          expect(element).toHaveText('vingt - deux');
+        });
+
+    fixmeIvy('FW-906: Multiple ICUs wrapped in HTML tags in one i18n block throw an error')
+        .it('should handle multiple ICUs in one i18n block wrapped in HTML elements', () => {
+          const template = `
+            <div i18n>
+              <span>
+                {age, select, 10 {ten} 20 {twenty} other {other}}
+              </span>
+              <span>
+                {count, select, 1 {one} 2 {two} other {more than two}}
+              </span>
+            </div>
+          `;
+          const fixture = getFixtureWithOverrides({template});
+
+          const element = fixture.nativeElement.firstChild;
+          const spans = element.getElementsByTagName('span');
+          expect(spans.length).toBe(2);
+          expect(spans[0].innerHTML).toBe('vingt');
+          expect(spans[1].innerHTML).toBe('deux');
+        });
+
+    it('should handle ICUs inside a template in i18n block', () => {
+      const template = `
+            <div i18n>
+              <span *ngIf="visible">
+                {age, select, 10 {ten} 20 {twenty} other {other}}
+              </span>
+            </div>
+          `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      const spans = element.getElementsByTagName('span');
+      expect(spans.length).toBe(1);
+      expect(spans[0]).toHaveText('vingt');
+    });
+
+    it('should handle nested icus', () => {
+      const template = `
+        <div i18n>
+          {age, select,
+            10 {ten - {count, select, 1 {one} 2 {two} other {more than two}}}
+            20 {twenty - {count, select, 1 {one} 2 {two} other {more than two}}}
+            other {other}}
+        </div>
+      `;
+      const fixture = getFixtureWithOverrides({template});
+
+      const element = fixture.nativeElement.firstChild;
+      expect(element).toHaveText('vingt - deux');
+    });
+
+    fixmeIvy('FW-908: ICUs inside <ng-container>s throw an error at runtime')
+        .it('should handle ICUs inside <ng-container>', () => {
+          const template = `
+            <ng-container i18n>
+              {age, select, 10 {ten} 20 {twenty} other {other}}
+            </ng-container>
+          `;
+          const fixture = getFixtureWithOverrides({template});
+
+          const element = fixture.nativeElement;
+          expect(element.innerHTML).toBe('vingt');
+        });
+
+    fixmeIvy('FW-909: ICUs inside <ng-template>s throw errors at runtime')
+        .it('should handle ICUs inside <ng-template>', () => {
+          const template = `
+            <ng-template i18n tplRef>
+              {age, select, 10 {ten} 20 {twenty} other {other}}
+            </ng-template>
+          `;
+          const fixture = getFixtureWithOverrides({template});
+
+          const element = fixture.nativeElement;
+          expect(element.innerHTML).toBe('vingt');
+        });
+  });
+});
\ No newline at end of file
diff --git a/packages/private/testing/src/goog_get_msg.ts b/packages/private/testing/src/goog_get_msg.ts
index 902339e955..2547839cd8 100644
--- a/packages/private/testing/src/goog_get_msg.ts
+++ b/packages/private/testing/src/goog_get_msg.ts
@@ -16,13 +16,12 @@
 export function polyfillGoogGetMsg(translations: {[key: string]: string} = {}): void {
   const glob = (global as any);
   glob.goog = glob.goog || {};
-  glob.goog.getMsg =
-      glob.goog.getMsg || function(input: string, placeholders: {[key: string]: string} = {}) {
-        if (typeof translations[input] !== 'undefined') {  // to account for empty string
-          input = translations[input];
-        }
-        return Object.keys(placeholders).length ?
-            input.replace(/\{\$(.*?)\}/g, (match, key) => placeholders[key] || '') :
-            input;
-      };
-}
+  glob.goog.getMsg = function(input: string, placeholders: {[key: string]: string} = {}) {
+    if (typeof translations[input] !== 'undefined') {  // to account for empty string
+      input = translations[input];
+    }
+    return Object.keys(placeholders).length ?
+        input.replace(/\{\$(.*?)\}/g, (match, key) => placeholders[key] || '') :
+        input;
+  };
+}
\ No newline at end of file