Implement assert in initializer list in VM.

tests/language/language.status

 # Copyright (c) 2012, 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.
 
 # This directory contains tests that are intended to show the
 # current state of the language.
 
 [ $compiler != none || ($runtime != vm && $runtime != dartium && $runtime != drt)]
 arg_param_trailing_comma_test/none: Fail # Issue 26644
 
@@ skipping 234 matching lines @@
 large_class_declaration_test: Skip
 
 [ $compiler == precompiler && $runtime == dart_precompiled && $system == android ]
 vm/optimized_guarded_field_isolates_test: Skip # Issue #26373
 issue23244_test: Skip # Issue #26373
 
 [ $hot_reload ]
 deferred_load_inval_code_test: RuntimeError
 regress_26453_test: Pass, Fail, Crash
 vm/regress_16873_test: Pass, Crash
+
+[$runtime != vm || $compiler != none]
+assert_initializer_test: SKIP  # not implemented yet, experiment is VM only.
+
+[$runtime == vm && $compiler == none && $unchecked]
+assert_initializer_test/*: MissingCompileTimeError, OK  # asserts shouldn't fail in unchecked mode.
+assert_initializer_test/none: pass
+
+[$runtime == vm && $compiler == none && $checked]
+// The VM doesn't enforce that potentially const expressions are actually
+// const expressions when the constructor is called with `const`.
+assert_initializer_test/4*: MissingCompileTimeError # Issue 392.