Add Fasta tests.

pkg/fasta/test/expressions.dart

+// Copyright (c) 2016, 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.
+
+foo({fisk}) {
+  print(fisk);
+}
+
+caller(f) {
+  f();
+}
+
+main() {
+  int i = 0;
+  print(i == 1 ? "bad" : "good");
+  print("$i");
+  print("'$i'");
+  print(" '${i}' ");
+  print(" '${i}' '${i}'");
+  print(" '$i' '${i}'");
+  print("foo" "bar");
+  print(" '${i}' '${i}'" " '$i' '${i}'");
+  try {
+    throw "fisk";
+  } on String catch (e, s) {
+    print(e);
+    if (s != null) print(s);
+  }
+  for(;false;) {}
+  var list = ["Hello, World!"];
+  print(list[i]);
+  list[i] = "Hello, Brave New World!";
+  print(list[i]);
+  i = 87;
+  print(-i);
+  print(~i);
+  print(!(i == 42));
+  print(--i);
+  print(++i);
+  print(i--);
+  print(i++);
+  print(new Object());
+  print(const Object());
+  print((new List<String>(2)).runtimeType);
+  foo(fisk: "Blorp gulp");
+  f() {
+    print("f was called");
+  }
+  caller(f);
+  caller(() {
+    print("<anon> was called");
+  });
+  g([message]) {
+    print(message);
+  }
+  g("Hello, World");
+  caller(([x]) {
+    print("<anon> was called with $x");
+  });
+  h({message}) {
+    print(message);
+  }
+  h(message: "Hello, World");
+  caller(({x}) {
+    print("<anon> was called with $x");
+  });
+  print((int).toString());
+  print(int);
+  print(int..toString());
+  try {
+    print(int?.toString());
+    throw "Shouldn't work";
+  } on NoSuchMethodError catch (e) {
+    print("As expected: $e");
+  }
+  print(int.parse("42"));
+}