test: fix external source map test for Ivy

Author: filipesilva

packages/angular_devkit/build_angular/test/browser/vendor-source-map_spec_large.ts

@@ -9,8 +9,7 @@ import { Architect } from '@angular-devkit/architect';
 import * as path from 'path';
 import { browserBuild, createArchitect, host, veEnabled } from '../utils';
 
-// DISABLED_FOR_IVY   These should pass but are currently not supported
-(veEnabled ? describe : xdescribe)('Browser Builder external source map', () => {
+describe('Browser Builder external source map', () => {
   const target = { project: 'app', target: 'build' };
   let architect: Architect;
 
@@ -30,8 +29,9 @@ import { browserBuild, createArchitect, host, veEnabled } from '../utils';
     };
 
     const { files } = await browserBuild(architect, host, target, overrides);
-    const sourcePath = JSON.parse(await files['vendor.js.map']).sources[0];
-    expect(path.extname(sourcePath)).toBe('.ts', `${sourcePath} extention should be '.ts'`);
+    const sourcePaths: string[] = JSON.parse(await files['vendor.js.map']).sources;
+    const hasTsSourcePaths = sourcePaths.some(p => path.extname(p) == '.ts');
+    expect(hasTsSourcePaths).toBe(true, `vendor.js.map should have '.ts' extentions`);
   });
 
   it(`works when using deprecated 'vendorSourceMap'`, async () => {
@@ -44,8 +44,9 @@ import { browserBuild, createArchitect, host, veEnabled } from '../utils';
     };
 
     const { files } = await browserBuild(architect, host, target, overrides);
-    const sourcePath = JSON.parse(await files['vendor.js.map']).sources[0];
-    expect(path.extname(sourcePath)).toBe('.ts', `${sourcePath} extention should be '.ts'`);
+    const sourcePaths: string[] = JSON.parse(await files['vendor.js.map']).sources;
+    const hasTsSourcePaths = sourcePaths.some(p => path.extname(p) == '.ts');
+    expect(hasTsSourcePaths).toBe(true, `vendor.js.map should have '.ts' extentions`);
   });
 
   it('does not map sourcemaps from external library when disabled', async () => {
@@ -58,7 +59,8 @@ import { browserBuild, createArchitect, host, veEnabled } from '../utils';
     };
 
     const { files } = await browserBuild(architect, host, target, overrides);
-    const sourcePath = JSON.parse(await files['vendor.js.map']).sources[0];
-    expect(path.extname(sourcePath)).toBe('.js', `${sourcePath} extention should be '.ts'`);
+    const sourcePaths: string[] = JSON.parse(await files['vendor.js.map']).sources;
+    const hasTsSourcePaths = sourcePaths.some(p => path.extname(p) == '.ts');
+    expect(hasTsSourcePaths).toBe(false, `vendor.js.map not should have '.ts' extentions`);
   });
 });