Merge more Kernel infrastructure from kernel_sdk SDK fork.

tests/kernel/unsorted/expect.dart

Index: tests/kernel/unsorted/expect.dart
diff --git a/tests/kernel/unsorted/expect.dart b/tests/kernel/unsorted/expect.dart
new file mode 100644
index 0000000000000000000000000000000000000000..4b3ffc88d5b6df08f96423315946aae2baf860f1
--- /dev/null
+++ b/tests/kernel/unsorted/expect.dart
@@ -0,0 +1,12 @@
+import 'dart:io' as io;

[Kevin Millikin (Google), 2016/10/21 09:10:57]

Copyright header.  We can actually use expect in these tests now, perhaps file
an issue to change it?

[Vyacheslav Egorov (Google), 2016/10/21 13:39:43]

Done.

+
+// We use this class until we support more language features to use
+// `package:expect`.
+class Expect {
+  static void isTrue(bool condition) {
+    if (!condition) {
+      print("Expect.isTrue(cond) failed. io.exit(1)ing");
+      io.exit(1);
+    }
+  }
+}