Add negation to single-identifier tests in status files.

tests/standalone/status_expression_test.dart

Index: tests/standalone/status_expression_test.dart
diff --git a/tests/standalone/status_expression_test.dart b/tests/standalone/status_expression_test.dart
index a16c746d8d596c6b19063910600a296b60e53b0d..fbf7b1d696466d7dd0fa405e01d4f03ae60be308 100644
--- a/tests/standalone/status_expression_test.dart
+++ b/tests/standalone/status_expression_test.dart
@@ -22,6 +22,7 @@ main() {
   testExpression();
   testSyntaxError();
   testBoolean();
+  testNotBoolean();
   testNotEqual();
 }
 
@@ -76,6 +77,29 @@ void testBoolean() {
   Expect.isFalse(expression.evaluate(environment));
 }
 
+void testNotBoolean() {
+  var expression =
+      Expression.parse(r"  $arch == ia32 && ! $checked || $mode == release ");
+  Expect.equals(
+      r"((($arch == ia32) && (bool ! $checked)) || ($mode == release))",
+      expression.toString());
+
+  var environment = new TestEnvironment(
+      {"arch": "ia32", "checked": "false", "mode": "debug"});
+
+  Expect.isTrue(expression.evaluate(environment));
+  environment["mode"] = "release";
+  Expect.isTrue(expression.evaluate(environment));
+  environment["checked"] = "true";
+  Expect.isTrue(expression.evaluate(environment));
+  environment["mode"] = "debug";
+  Expect.isFalse(expression.evaluate(environment));
+  environment["arch"] = "arm";
+  Expect.isFalse(expression.evaluate(environment));
+  environment["checked"] = "false";
+  Expect.isFalse(expression.evaluate(environment));
+}
+
 void testNotEqual() {
   // Test the != operator.
   var expression = Expression.parse(r"$compiler == dart2js && $runtime != ie9");