build(core): add bazel test targets for core (#21053)

- Add tests target for `test`, `test_node_only` and `test_web` in `core` package.
- Created a `_testing_init` pseudo package where bootstrap code for tests is kept.
- Moved `source_map_util` from `test` to `testing` so to prevent circular dependency.
- Removed `visibility:public` for testing `BUILD` packages.

PR Close #21053

packages/compiler/src/compiler.ts

@@ -76,4 +76,5 @@ export * from './style_compiler';
 export * from './template_parser/template_parser';
 export {ViewCompiler} from './view_compiler/view_compiler';
 export {getParseErrors, isSyntaxError, syntaxError, Version} from './util';
+export {SourceMap} from './output/source_map';
 // This file only reexports content of the `src` folder. Keep it that way.

packages/compiler/test/BUILD.bazel

@@ -1,5 +1,3 @@
-package(default_visibility = ["//visibility:public"])
-
 load("@build_bazel_rules_typescript//:defs.bzl", "ts_library")
 
 ts_library(

packages/compiler/test/aot/compiler_spec.ts

@@ -9,11 +9,10 @@
 import {AotSummaryResolver, GeneratedFile, StaticSymbolCache, StaticSymbolResolver, toTypeScript} from '@angular/compiler';
 import {MetadataBundler} from '@angular/compiler-cli/src/metadata/bundler';
 import {privateEntriesToIndex} from '@angular/compiler-cli/src/metadata/index_writer';
+import {extractSourceMap, originalPositionFor} from '@angular/compiler/testing/src/output/source_map_util';
 import {NodeFlags} from '@angular/core/src/view/index';
 import * as ts from 'typescript';
 
-import {extractSourceMap, originalPositionFor} from '../output/source_map_util';
-
 import {EmittingCompilerHost, MockAotCompilerHost, MockCompilerHost, MockDirectory, MockMetadataBundlerHost, arrayToMockDir, compile, expectNoDiagnostics, settings, setup, toMockFileArray} from './test_util';
 
 describe('compiler (unbundled Angular)', () => {

packages/compiler/test/output/abstract_emitter_node_only_spec.ts

@@ -9,7 +9,7 @@
 import {ParseLocation, ParseSourceFile, ParseSourceSpan} from '@angular/compiler';
 import {EmitterVisitorContext} from '@angular/compiler/src/output/abstract_emitter';
 import {SourceMap} from '@angular/compiler/src/output/source_map';
-import {extractSourceMap, originalPositionFor} from './source_map_util';
+import {extractSourceMap, originalPositionFor} from '@angular/compiler/testing/src/output/source_map_util';
 
 export function main() {
   describe('AbstractEmitter', () => {

packages/compiler/test/output/js_emitter_node_only_spec.ts

@@ -13,7 +13,7 @@ import * as o from '@angular/compiler/src/output/output_ast';
 import {SourceMap} from '@angular/compiler/src/output/source_map';
 import {ParseLocation, ParseSourceFile, ParseSourceSpan} from '@angular/compiler/src/parse_util';
 
-import {extractSourceMap, originalPositionFor} from './source_map_util';
+import {extractSourceMap, originalPositionFor} from '@angular/compiler/testing/src/output/source_map_util';
 
 const someGenFilePath = 'somePackage/someGenFile';
 

packages/compiler/test/output/ts_emitter_node_only_spec.ts

@@ -13,7 +13,7 @@ import {SourceMap} from '@angular/compiler/src/output/source_map';
 import {TypeScriptEmitter} from '@angular/compiler/src/output/ts_emitter';
 import {ParseSourceSpan} from '@angular/compiler/src/parse_util';
 
-import {extractSourceMap, originalPositionFor} from './source_map_util';
+import {extractSourceMap, originalPositionFor} from '@angular/compiler/testing/src/output/source_map_util';
 
 const someGenFilePath = 'somePackage/someGenFile';
 

packages/compiler/testing/BUILD.bazel

@@ -8,5 +8,8 @@ ts_library(
     srcs = glob(["**/*.ts"]),
     module_name = "@angular/compiler/testing",
     tsconfig = "//packages:tsconfig",
-    deps = ["//packages/compiler"],
+    deps = [
+        "//packages:types",
+        "//packages/compiler",
+    ],
 )

packages/compiler/testing/src/output/source_map_util.ts

@@ -6,7 +6,7 @@
  * found in the LICENSE file at https://angular.io/license
  */
 
-import {SourceMap} from '@angular/compiler/src/output/source_map';
+import {SourceMap} from '@angular/compiler';
 const b64 = require('base64-js');
 const SourceMapConsumer = require('source-map').SourceMapConsumer;