Split js_backend_cps_ir tests into multiple test units.

tests/compiler/dart2js/js_backend_cps_ir_test.dart

-// Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE file.
-// VMOptions=-DUSE_CPS_IR=true
-
-// Test that the CPS IR code generator compiles programs and produces the
-// the expected output.
-
-import 'package:async_helper/async_helper.dart';
-import 'package:expect/expect.dart';
-import 'package:compiler/src/apiimpl.dart'
-       show Compiler;
-import 'memory_compiler.dart';
-import 'package:compiler/src/js/js.dart' as js;
-import 'package:compiler/src/common.dart' show Element;
-
-import 'js_backend_cps_ir_basic.dart' as basic;
-import 'js_backend_cps_ir_literals.dart' as literals;
-import 'js_backend_cps_ir_operators.dart' as operators;
-import 'js_backend_cps_ir_control_flow.dart' as control_flow;
-import 'js_backend_cps_ir_interceptors.dart' as interceptors;
-import 'js_backend_cps_ir_closures.dart' as closures;
-
-const String TEST_MAIN_FILE = 'test.dart';
-
-List<TestEntry> tests = <TestEntry>[]
-     ..addAll(basic.tests)
-     ..addAll(literals.tests)
-     ..addAll(control_flow.tests)
-     ..addAll(operators.tests)
-     ..addAll(interceptors.tests)
-     ..addAll(closures.tests);
-
-class TestEntry {
-  final String source;
-  final String expectation;
-  const TestEntry(this.source, [this.expectation]);
-}
-
-String formatTest(Map test) {
-  return test[TEST_MAIN_FILE];
-}
-
-String getCodeForMain(Compiler compiler) {
-  Element mainFunction = compiler.mainFunction;
-  js.Node ast = compiler.enqueuer.codegen.generatedCode[mainFunction];
-  return js.prettyPrint(ast, compiler).getText();
-}
-
-main() {
-  Expect.isTrue(const bool.fromEnvironment("USE_CPS_IR"));
-
-  for (TestEntry test in tests) {
-    Map files = {TEST_MAIN_FILE: test.source};
-    asyncTest(() {
-      Compiler compiler = compilerFor(files);
-      Uri uri = Uri.parse('memory:$TEST_MAIN_FILE');
-      return compiler.run(uri).then((bool success) {
-        Expect.isTrue(success);
-        String expectation = test.expectation;
-        if (expectation != null) {
-          String expected = test.expectation;
-          String found = getCodeForMain(compiler);
-          if (expected != found) {
-            Expect.fail('Expected:\n$expected\nbut found\n$found');
-          }
-        }
-      }).catchError((e) {
-        print(e);
-        Expect.fail('The following test failed to compile:\n'
-                    '${formatTest(files)}');
-      });
-    });
-  }
-}