Format all tests.

tests/language/div_by_zero_test.dart

Index: tests/language/div_by_zero_test.dart
diff --git a/tests/language/div_by_zero_test.dart b/tests/language/div_by_zero_test.dart
index f98c4bf440f283fbbc5623ce1aba1af5fff83c59..cb67d688dd7848c9c26d1b163a0843d5c60124bc 100644
--- a/tests/language/div_by_zero_test.dart
+++ b/tests/language/div_by_zero_test.dart
@@ -6,16 +6,15 @@
 import "package:expect/expect.dart";
 
 class DivByZeroTest {
-
   static double divBy(int a, int b) {
-    var result = a/b;
+    var result = a / b;
     return 1.0 * result;
   }
 
   static bool moustacheDivBy(int a, int b) {
     var val = null;
     try {
-      val = a~/b;
+      val = a ~/ b;
     } catch (e) {
       return true;
     }