From 3cc1d76ee7e64fee74931bb3f07b69765a7b679b Mon Sep 17 00:00:00 2001
From: Chuck Jazdzewski <chuckj@google.com>
Date: Wed, 31 Jan 2018 13:11:07 -0800
Subject: [PATCH] fix(ivy): generate correct interpolations (#21946)

Ivy compile would generate the an incorrect interpolation if there
were more than 8 interpolations in a text block.

Fixes: #21927

PR Close #21946
---
 .../compiler/src/render3/r3_view_compiler.ts  |  4 +--
 .../test/render3/r3_view_compiler_spec.ts     | 31 ++++++++++++++++++-
 2 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/packages/compiler/src/render3/r3_view_compiler.ts b/packages/compiler/src/render3/r3_view_compiler.ts
index 4b60e9048f..3b9f74a8f2 100644
--- a/packages/compiler/src/render3/r3_view_compiler.ts
+++ b/packages/compiler/src/render3/r3_view_compiler.ts
@@ -174,9 +174,9 @@ function interpolate(args: o.Expression[]): o.Expression {
     case 17:
       return o.importExpr(R3.bind8).callFn(args);
   }
-  (args.length > 19 && args.length % 2 == 1) ||
+  (args.length >= 19 && args.length % 2 == 1) ||
       error(`Invalid interpolation argument length ${args.length}`);
-  return o.importExpr(R3.bindV).callFn(args);
+  return o.importExpr(R3.bindV).callFn([o.literalArr(args)]);
 }
 
 class BindingScope {
diff --git a/packages/compiler/test/render3/r3_view_compiler_spec.ts b/packages/compiler/test/render3/r3_view_compiler_spec.ts
index 478bb86145..1c9ec8afce 100644
--- a/packages/compiler/test/render3/r3_view_compiler_spec.ts
+++ b/packages/compiler/test/render3/r3_view_compiler_spec.ts
@@ -100,6 +100,35 @@ describe('r3_view_compiler', () => {
     expect(result.source).toContain('@angular/core');
   });
 
+  describe('interpolations', () => {
+    // Regression #21927
+    it('should generate a correct call to bV with more than 8 interpolations', () => {
+      const files: MockDirectory = {
+        app: {
+          'example.ts': `
+          import {Component, NgModule} from '@angular/core';
+
+          @Component({
+            selector: 'my-app',
+            template: ' {{list[0]}} {{list[1]}} {{list[2]}} {{list[3]}} {{list[4]}} {{list[5]}} {{list[6]}} {{list[7]}} {{list[8]}} '
+          })
+          export class MyApp implements OnInit {
+            list: any[] = [];
+          }
+
+          @NgModule({declarations: [MyApp]})
+          export class MyModule {}`
+        }
+      };
+
+      const bV_call = `IDENT.ɵbV([' ',ctx.list[0],' ',ctx.list[1],' ',ctx.list[2],' ',ctx.list[3],
+        ' ',ctx.list[4],' ',ctx.list[5],' ',ctx.list[6],' ',ctx.list[7],' ',ctx.list[8],
+        ' '])`;
+      const result = compile(files, angularFiles);
+      expectEmit(result.source, bV_call, 'Incorrect bV call');
+    });
+  });
+
   /* These tests are codified version of the tests in compiler_canonical_spec.ts. Every
    * test in compiler_canonical_spec.ts should have a corresponding test here.
    */
@@ -696,7 +725,7 @@ function expectEmit(source: string, emitted: string, description: string) {
       }
     }
     fail(
-        'Test helper failure: Expected expression failed but the reporting logic could not find where it failed');
+        `Test helper failure: Expected expression failed but the reporting logic could not find where it failed in: ${source}`);
   }
 }