Format all multitests

tests/language/if_null_assignment_behavior_test.dart

 // Copyright (c) 2015, 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.
 
 // Verify semantics of the ??= operator, including order of operations, by
 // keeping track of the operations performed.
 
 import "package:expect/expect.dart";
 import "if_null_assignment_helper.dart" as h;
 
@@ skipping 92 matching lines @@
     vGetValue = null;
     return tmp;
   }
 
   void set v(value) {
     h.operations.add('$s.v=$value');
   }
 
   var indexGetValue = null;
 
-  operator[](index) {
+  operator [](index) {
     h.operations.add('$s[$index]');
     var tmp = indexGetValue;
     indexGetValue = null;
     return tmp;
   }
 
-  void operator[]=(index, value) {
+  void operator []=(index, value) {
     h.operations.add('$s[$index]=$value');
   }
 
   final finalOne = 1;
   final finalNull = null;
 
   void instanceTest() {
     // v ??= e is equivalent to ((x) => x == null ? v = e : x)(v)
     vGetValue = 1; check(1, () => v ??= bad(), ['$s.v']); //# 01: ok
     yGetValue = 1; check(1, () => v ??= y, ['$s.v', 'y', '$s.v=1']); //# 02: ok
@@ skipping 15 matching lines @@
     // super.v ??= e is equivalent to
     // ((x) => x == null ? super.v = e : x)(super.v)
     vGetValue = 1; check(1, () => super.v ??= bad(), ['$s.v']); //# 05: ok
     yGetValue = 1; check(1, () => super.v ??= y, ['$s.v', 'y', '$s.v=1']); //# 06: ok
   }
 }
 
 main() {
   // Make sure the "none" test fails if "??=" is not implemented.  This makes
   // status files easier to maintain.
-  var _; _ ??= null;
+  var _;
+  _ ??= null;
 
   new C('c').instanceTest();
   new D('d').derivedInstanceTest();
 
   // v ??= e is equivalent to ((x) => x == null ? v = e : x)(v)
   xGetValue = 1; check(1, () => x ??= bad(), ['x']); //# 07: ok
   yGetValue = 1; check(1, () => x ??= y, ['x', 'y', 'x=1']); //# 08: ok
   h.xGetValue = 1; check(1, () => h.x ??= bad(), ['h.x']); //# 09: ok
   yGetValue = 1; check(1, () => h.x ??= y, ['h.x', 'y', 'h.x=1']); //# 10: ok
   { var l = 1; check(1, () => l ??= bad(), []); } //# 11: ok
@@ skipping 38 matching lines @@
   // C?.v ??= e2 is equivalent to C.v ??= e2.
   C.xGetValue = 1; //                        //# 29: ok
   check(1, () => C?.x ??= bad(), ['C.x']); //# 29: continued
   h.C.xgetValue = 1; //                          //# 30: ok
   check(1, () => h.c?.x ??= bad(), ['h.C.x']); //# 30: continued
   yGetValue = 1; //                                    //# 31: ok
   check(1, () => C?.x ??= y, ['C.x', 'y', 'C.x=1']); //# 31: continued
   yGetValue = 1; //                                          //# 32: ok
   check(1, () => h.C?.x ??= y, ['h.C.x', 'y', 'h.C.x=1']); //# 32: continued
 }