diff --git a/tests/corelib/corelib.status b/tests/corelib/corelib.status
index cfdb8389f46..84310144042 100644
--- a/tests/corelib/corelib.status
+++ b/tests/corelib/corelib.status
@@ -4,17 +4,14 @@
 
 [ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
 bool_from_environment2_test: Skip
-bool_from_environment_default_value_test: Skip
 bool_from_environment_test: Skip
 from_environment_const_type_test: Skip
 from_environment_const_type_undefined_test: Skip
 int_from_environment2_test: Skip
 int_from_environment3_test: Skip
-int_from_environment_default_value_test: Skip
 int_from_environment_test: Skip
 string_from_environment2_test: Skip
 string_from_environment3_test: Skip
-string_from_environment_default_value: Skip
 string_from_environment_test: Skip
 
 [ $compiler == none ]
@@ -215,7 +212,6 @@ big_integer_parsed_mul_div_vm_test: Pass, Slow
 [ $compiler == dart2js && $cps_ir ]
 apply2_test: Crash # Instance of 'TypeOperator': type check unimplemented for _Nullary.
 apply_test: Crash # (test0): handleStaticFunctionGet: function(test0)
-bool_from_environment_default_value_test: Crash # (test): handleStaticFunctionGet: function(test)
 collection_removes_test: RuntimeError # Please triage this failure.
 collection_to_string_test: Crash # Instance of 'TypeOperator': type check unimplemented for List.
 compare_to2_test: Crash # Instance of 'TypeOperator': type check unimplemented for List.
@@ -249,7 +245,6 @@ hash_set_test/none: Crash # (testIdentitySet): handleStaticFunctionGet: function
 hash_set_type_check_test: Crash # Instance of 'TypeOperator': type check unimplemented for _Nullary.
 hashcode_test: Crash # (bar): handleStaticFunctionGet: function(bar)
 indexed_list_access_test: Crash # (getIt): handleStaticFunctionGet: function(getIt)
-int_from_environment_default_value_test: Crash # (test): handleStaticFunctionGet: function(test)
 int_parse_radix_test/01: Crash # Please triage this failure.
 int_parse_radix_test/02: Crash # Please triage this failure.
 int_parse_radix_test/none: Crash # Please triage this failure.
diff --git a/tests/corelib/bool_from_environment_default_value_test.dart b/tests/isolate/bool_from_environment_default_value_test.dart
similarity index 100%
rename from tests/corelib/bool_from_environment_default_value_test.dart
rename to tests/isolate/bool_from_environment_default_value_test.dart
diff --git a/tests/language/deferred_in_isolate_app.dart b/tests/isolate/deferred_in_isolate_app.dart
similarity index 100%
rename from tests/language/deferred_in_isolate_app.dart
rename to tests/isolate/deferred_in_isolate_app.dart
diff --git a/tests/language/deferred_in_isolate_lib.dart b/tests/isolate/deferred_in_isolate_lib.dart
similarity index 100%
rename from tests/language/deferred_in_isolate_lib.dart
rename to tests/isolate/deferred_in_isolate_lib.dart
diff --git a/tests/language/deferred_in_isolate_test.dart b/tests/isolate/deferred_in_isolate_test.dart
similarity index 100%
rename from tests/language/deferred_in_isolate_test.dart
rename to tests/isolate/deferred_in_isolate_test.dart
diff --git a/tests/language/enum_const_test.dart b/tests/isolate/enum_const_test.dart
similarity index 100%
rename from tests/language/enum_const_test.dart
rename to tests/isolate/enum_const_test.dart
diff --git a/tests/corelib/int_from_environment_default_value_test.dart b/tests/isolate/int_from_environment_default_value_test.dart
similarity index 100%
rename from tests/corelib/int_from_environment_default_value_test.dart
rename to tests/isolate/int_from_environment_default_value_test.dart
diff --git a/tests/isolate/isolate.status b/tests/isolate/isolate.status
index bc0a35c7ca6..c77747758ce 100644
--- a/tests/isolate/isolate.status
+++ b/tests/isolate/isolate.status
@@ -31,7 +31,8 @@ compile_time_error_test/none: Pass, Slow
 browser/*: SkipByDesign  # Browser specific tests
 
 [ $compiler == dart2js && $runtime == jsshell ]
-pause_test: Fail  # non-zero timer not supported.
+pause_test: Fail, OK  # non-zero timer not supported.
+timer_isolate_test: Fail, OK # Needs Timer to run.
 
 [ $compiler == dart2js && $runtime == safari ]
 cross_isolate_message_test: Skip # Issue 12627
@@ -50,6 +51,7 @@ message3_test/constList_identical: RuntimeError # Issue 21817
 message3_test/constMap: RuntimeError  # Issue 21817
 message3_test/constInstance: RuntimeError # Issue 21817
 browser/issue_12474_test: CompileTimeError # Issue 22529
+enum_const_test/02: RuntimeError # Issue 21817
 
 [ $compiler == dart2js && $jscl ]
 spawn_uri_test: SkipByDesign # Loading another file is not supported in JS shell
@@ -81,6 +83,7 @@ nested_spawn2_test: Skip # Issue 19127: This test is timing out.
 spawn_uri_nested_vm_test: Skip # Issue 14479: This test is timing out.
 
 [ $compiler == none && ( $runtime == dartium || $runtime == drt || $runtime == ContentShellOnAndroid) ]
+typed_message_test: Crash, Fail # Issue 13921, 14400
 message_enum_test: Fail, OK # Issue 13921 Dom isolates don't support spawnFunction
 compile_time_error_test/none: Fail, OK # Issue 13921 Dom isolates don't support spawnFunction
 isolate_import_test/none: Fail, OK # Issue 13921 Dom isolates don't support spawnFunction
@@ -103,6 +106,11 @@ kill_self_test: Fail, OK  # 13921 Dom isolates don't support spawnFunction
 handle_error_test: Fail, OK  # 13921 Dom isolates don't support spawnFunction
 handle_error2_test: Fail, OK  # 13921 Dom isolates don't support spawnFunction
 handle_error3_test: Fail, OK  # 13921 Dom isolates don't support spawnFunction
+timer_isolate_test: Fail, Pass # Issue 15487. Issue 13921: Dom isolates don't support spawnFunction
+deferred_in_isolate_test: Fail, OK  # Issue 16209, 13921 Dom isolates don't support spawnFunction
+bool_from_environment_default_value_test: Skip
+int_from_environment_default_value_test: Skip
+string_from_environment_default_value_test: Skip
 
 [ $compiler == dartanalyzer || $compiler == dart2analyzer ]
 browser/typed_data_message_test: StaticWarning
@@ -112,6 +120,7 @@ mint_maker_test: StaticWarning
 package_root_test: SkipByDesign # Uses dart:io.
 
 [ $compiler == dart2js && $cps_ir ]
+bool_from_environment_default_value_test: Crash # (test): handleStaticFunctionGet: function(test)
 compile_time_error_test/01: Crash # (entry): handleStaticFunctionGet: function(entry)
 compile_time_error_test/none: Crash # (entry): handleStaticFunctionGet: function(entry)
 count_test: Crash # (main): handleStaticFunctionGet: function(main)
@@ -122,6 +131,7 @@ handle_error3_test: Crash # (isomain1): handleStaticFunctionGet: function(isomai
 handle_error_test: Crash # (isomain1): handleStaticFunctionGet: function(isomain1)
 illegal_msg_function_test: Crash # (main): handleStaticFunctionGet: function(main)
 illegal_msg_mirror_test: Crash # (main): handleStaticFunctionGet: function(main)
+int_from_environment_default_value_test: Crash # (test): handleStaticFunctionGet: function(test)
 isolate_complex_messages_test: Crash # (main): handleStaticFunctionGet: function(main)
 isolate_current_test: Crash # (i2l): handleStaticFunctionGet: function(i2l)
 isolate_import_test/01: Crash # (entry): handleStaticFunctionGet: function(entry)
@@ -164,4 +174,8 @@ spawn_uri_multi_test/none: Crash # unsupported element kind: _defaultEnvironment
 stacktrace_message_test: Crash # (main): handleStaticFunctionGet: function(main)
 start_paused_test: Crash # (notyet): handleStaticFunctionGet: function(notyet)
 static_function_test: Crash # (main): handleStaticFunctionGet: function(main)
+string_from_environment_default_value_test: Crash # (test): handleStaticFunctionGet: function(test)
+timer_isolate_test: Crash # cannot compile methods that need interceptor calling convention.
+typed_message_test: Crash # (logMessages): handleStaticFunctionGet: function(logMessages)
 unresolved_ports_test: Crash # (main): handleStaticFunctionGet: function(main)
+
diff --git a/tests/corelib/string_from_environment_default_value.dart b/tests/isolate/string_from_environment_default_value_test.dart
similarity index 100%
rename from tests/corelib/string_from_environment_default_value.dart
rename to tests/isolate/string_from_environment_default_value_test.dart
diff --git a/tests/lib/async/timer_isolate_test.dart b/tests/isolate/timer_isolate_test.dart
similarity index 100%
rename from tests/lib/async/timer_isolate_test.dart
rename to tests/isolate/timer_isolate_test.dart
diff --git a/tests/language/typed_message_test.dart b/tests/isolate/typed_message_test.dart
similarity index 100%
rename from tests/language/typed_message_test.dart
rename to tests/isolate/typed_message_test.dart
diff --git a/tests/language/language.status b/tests/language/language.status
index eb3507488f9..bc11d57b3aa 100644
--- a/tests/language/language.status
+++ b/tests/language/language.status
@@ -71,7 +71,6 @@ vm/type_vm_test: Fail # Issue 14651.
 
 [ $compiler == none && ( $runtime == dartium || $runtime == drt || $runtime == ContentShellOnAndroid) ]
 issue13474_test: Pass, Fail # Issue 14651.
-typed_message_test: Crash, Fail # Issue 13921, 14400
 vm/optimized_guarded_field_isolates_test: Fail # Issue 13921.
 main_test/01: Fail # Issue 20028
 main_test/02: Fail # Issue 20028
diff --git a/tests/language/language_dart2js.status b/tests/language/language_dart2js.status
index c689ef89d84..01813e89abf 100644
--- a/tests/language/language_dart2js.status
+++ b/tests/language/language_dart2js.status
@@ -174,8 +174,6 @@ generic_closure_test: RuntimeError # Issue 12605
 const_switch_test/02: RuntimeError # Issue 17960
 const_switch_test/04: RuntimeError # Issue 17960
 
-enum_const_test/02: RuntimeError # Issue 21817
-
 const_dynamic_type_literal_test/02: CompileTimeError # Issue 23009
 const_dynamic_type_literal_test/03: CompileTimeError # Issue 23009
 
@@ -1143,7 +1141,6 @@ type_variable_nested_test: Crash # Instance of 'TypeOperator': type check unimpl
 type_variable_scope2_test: Crash # Instance of 'TypeOperator': type check unimplemented for Foo.
 type_variable_typedef_test: Crash # (foo): handleStaticFunctionGet: function(foo)
 typed_equality_test: Crash # Instance of 'TypeOperator': type casts not implemented.
-typed_message_test: Crash # (logMessages): handleStaticFunctionGet: function(logMessages)
 typedef_is_test: Crash # Instance of 'TypeOperator': type check unimplemented for Func1.
 typevariable_substitution2_test/01: Crash # Please triage this failure.
 typevariable_substitution2_test/02: Crash # Please triage this failure.
diff --git a/tests/lib/async/deferred/deferred_in_isolate_lib.dart b/tests/lib/async/deferred/deferred_in_isolate_lib.dart
deleted file mode 100644
index 64b38dbefc9..00000000000
--- a/tests/lib/async/deferred/deferred_in_isolate_lib.dart
+++ /dev/null
@@ -1 +0,0 @@
-String f() => "hi";
diff --git a/tests/lib/async/deferred/deferred_in_isolate_test.dart b/tests/lib/async/deferred/deferred_in_isolate_test.dart
deleted file mode 100644
index 08cd0dae003..00000000000
--- a/tests/lib/async/deferred/deferred_in_isolate_test.dart
+++ /dev/null
@@ -1,21 +0,0 @@
-import 'dart:isolate';
-import 'dart:async';
-import 'package:unittest/unittest.dart';
-
-import 'deferred_in_isolate_lib.dart' deferred as lib;
-
-loadDeferred(port) {
-  lib.loadLibrary().then((_) {
-    port.send(lib.f());
-  });
-}
-
-main() {
-  test("Deferred loading in isolate", () {
-    ReceivePort port = new ReceivePort();
-    port.first.then(expectAsync((msg) {
-       expect(msg, equals("hi"));
-    }));
-    Isolate.spawn(loadDeferred, port.sendPort);
-  });
-}
diff --git a/tests/lib/async/deferred/deferred_library.dart b/tests/lib/async/deferred/deferred_library.dart
deleted file mode 100644
index 186a11a19bb..00000000000
--- a/tests/lib/async/deferred/deferred_library.dart
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright (c) 2013, 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.
-
-library deferred_api_library;
-
-foo(x) {
-  print('foo($x)');
-  return 42;
-}
diff --git a/tests/lib/async/future_constructor_test.dart b/tests/lib/async/future_constructor_test.dart
index 64d946c7ccb..55193d96c36 100644
--- a/tests/lib/async/future_constructor_test.dart
+++ b/tests/lib/async/future_constructor_test.dart
@@ -6,7 +6,6 @@ library future_test;
 
 import "package:expect/expect.dart";
 import 'dart:async';
-import 'dart:isolate';
 
 main() {
   compare(func) {
diff --git a/tests/lib/async/stream_controller_async_test.dart b/tests/lib/async/stream_controller_async_test.dart
index 8d61ef96050..3fed8a88cf8 100644
--- a/tests/lib/async/stream_controller_async_test.dart
+++ b/tests/lib/async/stream_controller_async_test.dart
@@ -6,7 +6,6 @@
 library stream_controller_async_test;
 
 import 'dart:async';
-import 'dart:isolate';
 import "package:expect/expect.dart";
 import 'package:unittest/unittest.dart';
 import 'event_helper.dart';
diff --git a/tests/lib/async/stream_first_where_test.dart b/tests/lib/async/stream_first_where_test.dart
index 2137a7add97..6a35d266fce 100644
--- a/tests/lib/async/stream_first_where_test.dart
+++ b/tests/lib/async/stream_first_where_test.dart
@@ -6,7 +6,6 @@ library stream_controller_async_test;
 
 import "package:expect/expect.dart";
 import 'dart:async';
-import 'dart:isolate';
 import 'package:unittest/unittest.dart';
 import 'event_helper.dart';
 import 'stream_state_helper.dart';
diff --git a/tests/lib/async/stream_last_where_test.dart b/tests/lib/async/stream_last_where_test.dart
index 790ae62b06f..f001502707c 100644
--- a/tests/lib/async/stream_last_where_test.dart
+++ b/tests/lib/async/stream_last_where_test.dart
@@ -6,7 +6,6 @@ library stream_controller_async_test;
 
 import "package:expect/expect.dart";
 import 'dart:async';
-import 'dart:isolate';
 import 'package:unittest/unittest.dart';
 import 'event_helper.dart';
 import 'stream_state_helper.dart';
diff --git a/tests/lib/async/stream_single_test.dart b/tests/lib/async/stream_single_test.dart
index 8b3174eebcd..172580b6ab9 100644
--- a/tests/lib/async/stream_single_test.dart
+++ b/tests/lib/async/stream_single_test.dart
@@ -7,7 +7,6 @@ library stream_single_test;
 
 import "package:expect/expect.dart";
 import 'dart:async';
-import 'dart:isolate';
 import 'package:unittest/unittest.dart';
 import 'event_helper.dart';
 
diff --git a/tests/lib/async/stream_single_to_multi_subscriber_test.dart b/tests/lib/async/stream_single_to_multi_subscriber_test.dart
index 766f1bd6a73..20638812a5e 100644
--- a/tests/lib/async/stream_single_to_multi_subscriber_test.dart
+++ b/tests/lib/async/stream_single_to_multi_subscriber_test.dart
@@ -7,7 +7,6 @@ library stream_single_test;
 
 import "package:expect/expect.dart";
 import 'dart:async';
-import 'dart:isolate';
 import 'package:unittest/unittest.dart';
 import 'event_helper.dart';
 
diff --git a/tests/lib/async/timer_cancel_test.dart b/tests/lib/async/timer_cancel_test.dart
index 4d17fc41d76..d539cb7036f 100644
--- a/tests/lib/async/timer_cancel_test.dart
+++ b/tests/lib/async/timer_cancel_test.dart
@@ -5,7 +5,6 @@
 library timer_cancel_test;
 
 import 'dart:async';
-import 'dart:isolate';
 import 'package:unittest/unittest.dart';
 
 main() {
diff --git a/tests/lib/lib.status b/tests/lib/lib.status
index 78ae1d5facd..32c9bd955c1 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -138,7 +138,6 @@ async/multiple_timer_test: RuntimeError,OK # Needs Timer to run.
 async/timer_cancel_test: RuntimeError,OK # Needs Timer to run.
 async/timer_cancel1_test: RuntimeError,OK # Needs Timer to run.
 async/timer_cancel2_test: RuntimeError,OK # Needs Timer to run.
-async/timer_isolate_test: Fail, OK # Needs Timer to run.
 async/timer_repeat_test: RuntimeError,OK # Needs Timer to run.
 async/timer_test: RuntimeError,OK # Needs Timer to run.
 async/stream_controller_async_test: RuntimeError # Timer interface not supported; Issue 7728.
@@ -244,7 +243,6 @@ async/schedule_microtask6_test: Fail # Issue 10910
 async/timer_test: Fail, Pass # Issue 15487
 async/multiple_timer_test: Fail, Pass # Issue 15487
 async/stream_periodic3_test: Fail, Pass # Issue 15487
-async/timer_isolate_test: Fail, Pass # Issue 15487. Issue 13921: spawnFunction is not allowed on Dartium's DOM thread.
 async/timer_isActive_test: Fail, Pass # Issue 22352
 mirrors/immutable_collections_test: SkipSlow # Dartium debug uses -O0, so this will just timeout and waste bot cycles.
 mirrors/mirrors_reader_test: SkipSlow # Dartium debug uses -O0, so this will just timeout and waste bot cycles.
@@ -269,10 +267,6 @@ mirrors/mirrors_reader_test: SkipSlow # Times out. Issue 19127
 [ $compiler == dart2js && $runtime == safarimobilesim ]
 mirrors/mirrors_reader_test: SkipSlow # Times out. Issue 20806.
 
-[ $compiler == none && ($runtime == drt || $runtime == dartium || $runtime == ContentShellOnAndroid) ]
-# Dart vm does not support spawn from a dom-enabled isolate.
-async/deferred/deferred_in_isolate_test: RuntimeError # Issue 16209
-
 [ $compiler == dart2js && $runtime == jsshell ]
 async/schedule_microtask_test: Fail  # Preamble file does not correctly implement scheduleImmediate.